Zapier Integration API Reference

Overview

The Standard Time® Zapier integration exposes a REST API that the Zapier platform uses to build automated workflows between Standard Time® and thousands of other apps. The integration is bidirectional:

• Triggers — Standard Time® fires a webhook to Zapier whenever a record is created or updated (projects, tasks, time logs, expenses, users, clients, subprojects, inventory items, categories, invoices, and billing rates).
• Actions — Zapier calls Standard Time® endpoints to create or update records in response to events in other apps.

The API consists of 30 endpoints in total, grouped into five categories: authentication, webhook subscription management, sample data, dynamic dropdowns, and actions.

Category	Endpoints	Purpose
Authentication	1	Validate API key credentials and return user identity
REST Hooks	2	Subscribe and unsubscribe Zapier webhook URLs
Sample Data	1	Return a sample record for Zapier trigger setup
Dynamic Dropdowns	6	Populate project, user, client, subproject, category, and inventory pickers in Zapier's UI
Actions	20	Create and update projects, tasks, time logs, expenses, clients, subprojects, inventory items, categories, invoices, and billing rates
Total	30

Every record type above also has a matching pair of New / Updated REST Hook triggers — 11 record types × 2 events = 22 triggers in total. Users are read-only from Zapier's perspective: there's a New User / Updated User trigger and a GetUsers dropdown endpoint, but no create/update action, since user accounts are provisioned inside Standard Time® directly.

What's New in Version 2.0.0

Version 2.0.0 adds six new record types to the integration — Client, Subproject, Inventory, Category, Invoice, and Billing Rate — each with a full set of create/update actions, New/Updated triggers, and (where applicable) a dynamic dropdown endpoint. It also renames the Time Entry entity to Time Log and fixes several long-standing field-mapping bugs.

Authentication

Every request to the Standard Time® Zapier API must include two HTTP headers identifying the account and proving ownership of a valid API key.

Header	Value	Example
X-ST-Customer-Id	Your Standard Time® customer/account identifier	cust_abc123
X-ST-Api-Key	Your Standard Time® API key (generated in-app)	st_Abc1234…

The customer's Site URL (e.g. https://mycompany.standardtime.com) is also collected during the "Connect Account" step and stored alongside the credentials. Since v2.0.0, each connected account is labeled by its Site URL rather than a generic name, making it easy to tell multiple Standard Time® connections apart.

API Key Format

Keys are prefixed with st_ followed by 32 random bytes encoded as URL-safe Base64. Example prefix shown in the app: st_Abc1234 (truncated for display). The full key is shown only once at generation time — Standard Time® stores only a SHA-256 hash and will never display the plaintext key again.

Fallback Authentication

If the two custom headers are absent, the authentication filter also accepts:

1. Authorization: Bearer {apiKey} HTTP header
2. ?apiKey={apiKey} query string parameter (last resort)

The custom headers are the recommended and required form for the Zapier integration.

Auth Failures

Invalid or missing credentials return HTTP 401 Unauthorized with an empty body. All other errors return HTTP 200 with a JSON body containing "Success": false and an error message.

Base URL & Routes

All endpoints share the following base path pattern:

{{bundle.authData.siteUrl}}/zapier/{action}
{{bundle.authData.siteUrl}}/zapier/{action}/{id}

The siteUrl is the URL of the customer's Standard Time® web installation — for example, https://mycompany.standardtime.com. It is collected once during Zapier authentication and stored in bundle.authData.siteUrl.

The route segment {action} is the endpoint name (e.g., TestAuth, CreateProject). The optional {id} segment carries a record GUID where required (e.g., the Unsubscribe endpoint).

Response Format

All successful action and query responses return JSON with the following envelope:

{
  "Success": true,
  "Data": { ... },
  "ErrorResults": ""
}

Error responses (application-level) use the same envelope with Success: false:

{
  "Success": false,
  "Data": null,
  "ErrorResults": "Human-readable error description"
}

All datetimes are ISO 8601 UTC strings (2025-06-01T14:30:00Z). All record identifiers are GUIDs in lowercase hyphenated format (d290f1ee-6c54-4b01-90e6-d701748f0851).

Auth Test Endpoint

Used by Zapier during the "Connect Account" step to verify that the provided credentials are valid and return identifying information about the authenticated user.

Request: No body. Authentication headers only.

Response:

{
  "Success": true,
  "Id": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
  "Username": "jsmith",
  "Email": "jsmith@example.com",
  "ErrorResults": ""
}

Zapier displays the Username and Email fields to the user as confirmation that the correct account was connected. Note that these fields are flat top-level properties rather than nested under a Data object, unlike every other endpoint on this page.

REST Hook Endpoints

Standard Time® uses Zapier's REST Hook pattern for triggers. When a user activates a Zap, Zapier calls the Subscribe endpoint to register a callback URL. When the Zap is turned off or deleted, Zapier calls the Unsubscribe endpoint to deregister it.

Subscribe

Request body:

{
  "hookUrl": "https://hooks.zapier.com/hooks/catch/123456/abcdef/",
  "EventType": "project.created"
}

Field	Type		Description
hookUrl	string	required	The Zapier webhook URL to POST events to
EventType	string	required	One of the 22 event type keys listed in the Trigger Reference

Response:

{
  "Success": true,
  "Id": "a3f2c1b0-d4e5-4f67-8901-23456789abcd",
  "ErrorResults": ""
}

The Id is the subscription GUID. Zapier stores this and sends it back when unsubscribing.

Unsubscribe

{id} is the subscription GUID returned by Subscribe. No request body is required.

Response:

{ "Success": true, "ErrorResults": "" }

Sample Data Endpoint

Zapier calls this endpoint during trigger setup to show the user a sample record. This allows Zapier users to map fields from a Standard Time® event to fields in downstream apps without waiting for a real event to fire.

{eventType} is a URL-encoded event type string, such as project.created.

Response: A raw JSON array containing a single sample record matching the schema of the event type — there is no Success/Data/ErrorResults envelope on this endpoint. See the Webhook Payload Schemas section for field lists per event type.

[
  {
    "id": "00000000-0000-0000-0000-000000000001",
    "name": "Sample Project",
    "description": "A sample project record",
    "clientId": "",
    "status": "Active",
    "priority": "",
    "active": true,
    "projectCode": "",
    "startDate": "2025-01-06",
    "finishDate": "2025-03-28",
    "created": "2025-01-06T08:00:00Z",
    "modified": "2025-01-06T08:00:00Z"
  }
]

Sample records are static, hand-written fixtures — one per event type (22 total) — and are not read from the live database.

Dynamic Dropdown Endpoints

These endpoints power the project, user, client, subproject, category, and inventory pickers inside Zapier's action configuration UI, allowing users to select records by name rather than typing raw GUIDs. All six follow the same { "Success": true, "Data": [...], "ErrorResults": "" } envelope.

Get Projects

Returns all projects accessible to the authenticated user.

{
  "Success": true,
  "Data": [
    { "id": "d290f1ee-6c54-4b01-90e6-d701748f0851", "name": "Website Redesign" },
    { "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890", "name": "Factory Line 3 Audit" }
  ],
  "ErrorResults": ""
}

Get Users

Returns all users in the account.

{
  "Success": true,
  "Data": [
    { "id": "f47ac10b-58cc-4372-a567-0e02b2c3d479", "username": "jsmith", "name": "Jane Smith" },
    { "id": "b2c3d4e5-f6a7-8901-bcde-f12345678901", "username": "mwilson", "name": "Mike Wilson" }
  ],
  "ErrorResults": ""
}

Get Clients New in 2.0.0

Returns all clients in the account. Powers the ClientId dynamic dropdown used by Project, Expense, Client (update), Subproject, and Invoice actions.

{
  "Success": true,
  "Data": [
    { "id": "f47ac10b-58cc-4372-a567-0e02b2c3d479", "companyName": "Acme Corporation" }
  ],
  "ErrorResults": ""
}

Get Subprojects New in 2.0.0

Returns all subprojects in the account. Powers the SubprojectId dynamic dropdown used by Task, Time Log, Expense, Invoice, and Category actions.

{
  "Success": true,
  "Data": [
    { "id": "a3bb189e-8bf9-3888-9912-ace4e6543002", "name": "Phase 1" }
  ],
  "ErrorResults": ""
}

Get Categories New in 2.0.0

Returns all categories in the account. Powers the CategoryId dynamic dropdown used by Task, Time Log, Expense, and Billing Rate actions.

{
  "Success": true,
  "Data": [
    { "id": "9b2d3f1a-4e8c-4a7b-b92d-3f5e2a1c8d4e", "name": "Development" }
  ],
  "ErrorResults": ""
}

Get Inventory New in 2.0.0

Returns all inventory items in the account.

{
  "Success": true,
  "Data": [
    { "id": "c56a4180-65aa-42ec-a945-5fd21dec0538", "name": "Laptop" }
  ],
  "ErrorResults": ""
}

Action Endpoints

Action endpoints let Zapier create or update records in Standard Time® in response to events in other apps. All action endpoints use POST. Update endpoints apply only the fields present and non-empty in the request body — omitted or blank fields are left unchanged. Required/optional below reflects what the server itself enforces; the Zapier UI may additionally require a field at compose time even when the server accepts it blank (noted where relevant).

Projects

Create Project

Field	Type		Description
Name	string	required	Project name
Description	text	optional	Project description — multi-line text as of v2.0.0
ClientId	GUID	optional	Client record identifier (dynamic dropdown)
Status	string	optional	e.g., Active, Inactive, Complete
Priority	string	optional	Priority label
BillingType	string	optional	Numeric billing type code as text; safe default is "1" (by user)
PO	string	optional	Purchase order reference (text only)
StartDate	date	optional	ISO 8601 date, e.g., 2025-01-06
FinishDate	date	optional	ISO 8601 date
LaunchDate	date	optional	ISO 8601 date
DeliveryDate	date	optional	ISO 8601 date
QuotedDuration	string	optional	Quoted duration estimate
QuotedCost	string	optional	Quoted cost estimate
UserText1 / UserText2 / UserText3	string	optional	Custom user-defined text fields

Update Project

Same fields as Create Project, plus:

Field	Type		Description
id	GUID	required	ID of the project to update
All Create Project fields		optional	Any subset of fields to update; non-empty values only are applied

Response (both endpoints):

{
  "Success": true,
  "Data": {
    "id": "d290f1ee-6c54-4b01-90e6-d701748f0851",
    "name": "Website Redesign",
    "description": "Q1 redesign project",
    "clientId": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
    "status": "Active",
    "priority": "",
    "active": true,
    "projectCode": "",
    "billingType": "",
    "clientRate": 0.00,
    "salaryRate": 0.00,
    "qty": 0.00,
    "qtyBuilt": 0.00,
    "startDate": "2025-01-06",
    "finishDate": "2025-03-28",
    "launchDate": "",
    "deliveryDate": "",
    "quotedDuration": "",
    "quotedCost": "",
    "po": "",
    "userText1": "",
    "userText2": "",
    "userText3": "",
    "folder": "",
    "created": "2025-01-06T08:00:00Z",
    "modified": "2025-01-06T08:00:00Z"
  },
  "ErrorResults": ""
}

---

Tasks

Create Task

Field	Type		Description
Name	string	required	Task name
ProjectId	GUID	required	Parent project identifier
SubprojectId	GUID	optional	Subproject identifier (dynamic dropdown)
CategoryId	GUID	optional	Category identifier (dynamic dropdown)
Description	string	optional	Task description
Status	string	optional	e.g., Active, Complete
Priority	string	optional	Priority label
StartDate	date	optional	ISO 8601 date
FinishDate	date	optional	ISO 8601 date
DueDate	date	optional	ISO 8601 date
PercentComplete	integer	optional	0–100
AssignedUserIds	string	optional	Comma-separated list of user GUIDs to assign
Billable	boolean	optional	Whether time logged against this task is billable
QuotedCost	string	optional	Quoted cost estimate
UserText1 / UserText2 / UserText3	string	optional	Custom user-defined text fields

Update Task

Same fields as Create Task, plus:

Field	Type		Description
id	GUID	required	ID of the task to update
All Create Task fields		optional	Any subset; PercentComplete is applied only when > 0

Response (both endpoints):

{
  "Success": true,
  "Data": {
    "id": "c3d4e5f6-a7b8-9012-cdef-123456789012",
    "name": "Design Mockups",
    "description": "Initial wireframes",
    "projectId": "d290f1ee-6c54-4b01-90e6-d701748f0851",
    "subprojectId": "",
    "categoryId": "",
    "clientId": "",
    "status": "Active",
    "priority": "",
    "percentComplete": 0,
    "completed": false,
    "billable": true,
    "startDate": "2025-01-07",
    "finishDate": "2025-01-21",
    "dueDate": "",
    "completedDate": "",
    "durationHours": 0.00,
    "actualHours": 0.00,
    "remainingHours": 0.00,
    "costClient": 0.00,
    "costSalary": 0.00,
    "costClientActual": 0.00,
    "costClientRemain": 0.00,
    "costSalaryActual": 0.00,
    "costSalaryRemain": 0.00,
    "clientRate": 0.00,
    "salaryRate": 0.00,
    "quotedCost": "",
    "qty": 0.00,
    "qtyBuilt": 0.00,
    "userText1": "",
    "userText2": "",
    "userText3": "",
    "created": "2025-01-07T09:00:00Z",
    "modified": "2025-01-07T09:00:00Z"
  },
  "ErrorResults": ""
}

---

Time Logs renamed from Time Entry in 2.0.0

Create Time Log

Field	Type		Description
ProjectId	GUID	required	Project this time log is logged against
ProjectTaskId	GUID	optional	Task within the project
SubprojectId	GUID	optional	Subproject identifier (dynamic dropdown)
CategoryId	GUID	optional	Category identifier (dynamic dropdown)
UserId	GUID	optional	User who logged the time; defaults to the authenticated user
StartTime	datetime	optional	ISO 8601 UTC datetime
EndTime	datetime	optional	ISO 8601 UTC datetime
DurationHours	number	optional	Duration in hours (used when StartTime/EndTime are not provided). Stored as seconds in the DB — divide/multiply by 3600 is handled automatically.
Description	text	optional	Work notes or memo
Billable	boolean	optional	Whether this time is billable

Update Time Log

Same fields as Create Time Log, plus:

Field	Type		Description
id	GUID	required	ID of the time log to update
All Create Time Log fields		optional	Any subset; DurationHours is applied only when > 0

Response (both endpoints):

{
  "Success": true,
  "Data": {
    "id": "e5f6a7b8-c9d0-1234-efab-234567890123",
    "projectId": "d290f1ee-6c54-4b01-90e6-d701748f0851",
    "taskId": "c3d4e5f6-a7b8-9012-cdef-123456789012",
    "subprojectId": "",
    "categoryId": "",
    "userId": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
    "clientId": "",
    "startTime": "2025-01-08T13:00:00Z",
    "date": "2025-01-08",
    "endTime": "2025-01-08T15:30:00Z",
    "durationHours": 2.5,
    "description": "Completed wireframe review",
    "billable": true,
    "billed": false,
    "approved": false,
    "costClient": 0.00,
    "costSalary": 0.00,
    "clientRate": 0.00,
    "salaryRate": 0.00,
    "qty": 0.00,
    "location": "",
    "userText1": "",
    "userText2": "",
    "userText3": "",
    "created": "2025-01-08T15:30:00Z",
    "modified": "2025-01-08T15:30:00Z"
  },
  "ErrorResults": ""
}

---

Expenses

Create Expense

Field	Type		Description
ProjectId	GUID	required	Project this expense is charged to
ClientId	GUID	optional	Client identifier (dynamic dropdown)
SubprojectId	GUID	optional	Subproject identifier (dynamic dropdown)
CategoryId	GUID	optional	Category identifier (dynamic dropdown). Replaces the removed TypeId field.
UserId	GUID	optional	User submitting the expense; defaults to the authenticated user
Amount	number	optional	Expense amount in account currency
Price	number	optional	Unit price
Qty	number	optional	Quantity
Tax	number	optional	Tax amount
StartDate	date	optional	ISO 8601 date the expense was incurred
Description	text	optional	Memo or receipt description
PO	string	optional	Purchase order reference (text only)
Location	string	optional	Free-text location
Billable	boolean	optional	Whether this expense is billable to the client
Reimbursable	boolean	optional	Whether this expense is reimbursable to the user
UserText1 / UserText2 / UserText3	string	optional	Custom user-defined text fields

Update Expense

Same fields as Create Expense, plus:

Field	Type		Description
id	GUID	required	ID of the expense to update
All Create Expense fields		optional	Any subset; Amount, Price, Qty, and Tax are applied only when > 0

Response (both endpoints):

{
  "Success": true,
  "Data": {
    "id": "f6a7b8c9-d0e1-2345-fabc-345678901234",
    "projectId": "d290f1ee-6c54-4b01-90e6-d701748f0851",
    "clientId": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
    "subprojectId": "",
    "categoryId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "userId": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
    "expenseDate": "2025-01-09",
    "amount": 124.50,
    "price": 0.00,
    "qty": 0.00,
    "tax": 0.00,
    "mileageRate": 0.00,
    "distance": 0.00,
    "odometerBegin": 0.00,
    "odometerEnd": 0.00,
    "description": "Conference travel",
    "po": "",
    "payee": "",
    "checkNum": "",
    "location": "",
    "billable": true,
    "billed": false,
    "reimbursable": false,
    "reimbursed": false,
    "companyPaid": false,
    "approved": false,
    "userText1": "",
    "userText2": "",
    "userText3": "",
    "created": "2025-01-09T10:00:00Z",
    "modified": "2025-01-09T10:00:00Z"
  },
  "ErrorResults": ""
}

---

Clients New in 2.0.0

Create Client

Field	Type		Description
CompanyName	string	required	Client company name
Description	text	optional	Client description
Status	string	optional	e.g., Active, Inactive
Priority	string	optional	Priority label
Terms	string	optional	Payment terms, e.g. Net 30
Web	string	optional	Website URL
MainContact / MainContactPhone / MainContactMobile / MainContactFax / MainContactEmail	string	optional	Primary contact details
MainAddress1 / MainAddress2 / MainCity / MainState / MainZip / MainCountry	string	optional	Primary address
BillingContact / BillingContactPhone / BillingContactMobile / BillingContactFax / BillingContactEmail	string	optional	Billing contact details
BillingAddress1 / BillingAddress2 / BillingCity / BillingState / BillingZip / BillingCountry	string	optional	Billing address
TaxRate	number	optional	Tax rate percentage
TaxID	string	optional	Tax identification number
CurrencyID	string	optional	Currency identifier

Update Client

Same fields as Create Client, plus:

Field	Type		Description
id	GUID	required	ID of the client to update
All Create Client fields		optional	Any subset; TaxRate is applied only when > 0

Response (both endpoints):

{
  "Success": true,
  "Data": {
    "id": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
    "companyName": "Acme Corporation",
    "description": "A sample client record",
    "status": "Active",
    "priority": "",
    "active": true,
    "terms": "Net 30",
    "web": "https://acme.example.com",
    "invoiceNote": "",
    "thisCompany": "",
    "taxRate": 0.00,
    "taxId": "",
    "mainContact": "John Smith",
    "mainContactPhone": "555-1234",
    "mainContactMobile": "",
    "mainContactFax": "",
    "mainContactEmail": "john@acme.com",
    "mainAddress1": "123 Main St",
    "mainAddress2": "",
    "mainCity": "Springfield",
    "mainState": "IL",
    "mainZip": "62701",
    "mainCountry": "USA",
    "billingContact": "",
    "billingContactPhone": "",
    "billingContactMobile": "",
    "billingContactFax": "",
    "billingContactEmail": "",
    "billingAddress1": "",
    "billingAddress2": "",
    "billingCity": "",
    "billingState": "",
    "billingZip": "",
    "billingCountry": "",
    "currencyId": "",
    "folder": "",
    "created": "2025-01-06T08:00:00Z",
    "modified": "2025-01-06T08:00:00Z"
  },
  "ErrorResults": ""
}

---

Subprojects New in 2.0.0

Create Subproject

Field	Type		Description
Name	string	required	Subproject name
ProjectId	GUID	required	Parent project identifier
ParentId	GUID	optional	Parent subproject identifier, for nested subprojects
Description	text	optional	Subproject description
Status	string	optional	e.g., Active, Complete
Priority	string	optional	Priority label
StartDate / FinishDate / LaunchDate	date	optional	ISO 8601 dates
QuotedDuration	string	optional	Quoted duration estimate
QuotedCost	string	optional	Quoted cost estimate
ClientRate	number	optional	Billing rate for this subproject
SalaryRate	number	optional	Salary rate for this subproject
Qty / QtyBuilt	number	optional	Quantity ordered / quantity built
UserText1 / UserText2 / UserText3	string	optional	Custom user-defined text fields

Update Subproject

Same fields as Create Subproject, plus:

Field	Type		Description
id	GUID	required	ID of the subproject to update
All Create Subproject fields		optional	Any subset; rate/quantity fields are applied only when > 0

Response (both endpoints):

{
  "Success": true,
  "Data": {
    "id": "a3bb189e-8bf9-3888-9912-ace4e6543002",
    "name": "Phase 1",
    "extendedName": "Website Redesign / Phase 1",
    "description": "Initial discovery and wireframing",
    "projectId": "d290f1ee-6c54-4b01-90e6-d701748f0851",
    "parentId": "",
    "status": "Active",
    "priority": "",
    "active": true,
    "level": 1,
    "order": 1,
    "projectCode": "",
    "startDate": "2025-01-06",
    "finishDate": "2025-01-31",
    "launchDate": "",
    "quotedDuration": "",
    "quotedCost": "",
    "clientRate": 0.00,
    "salaryRate": 0.00,
    "qty": 0.00,
    "qtyBuilt": 0.00,
    "userText1": "",
    "userText2": "",
    "userText3": "",
    "created": "2025-01-06T08:00:00Z",
    "modified": "2025-01-06T08:00:00Z"
  },
  "ErrorResults": ""
}

---

Inventory New in 2.0.0

Create Inventory Item

Field	Type		Description
Name	string	required	Item name
Description	text	optional	Item description
Code	string	optional	Internal item code
Status	string	optional	e.g., Active, Inactive
UnitsType	string	optional	Unit of measure, e.g. each
BuyOrBuild	string	optional	Make-vs-buy flag
QtyInStock	number	optional	Current stock quantity
QtyWhenToReorder	number	optional	Reorder trigger threshold
QtyToReorder	number	optional	Quantity to reorder
CostUnit	number	optional	Internal cost per unit
CostClient	number	optional	Billable cost per unit
SKU / VendorSKU	string	optional	Stock keeping units
Vendor	string	optional	Vendor name
Manufacturer	string	optional	Manufacturer name
Location	string	optional	Storage location
Notes	text	optional	Free-text notes
UserText1 / UserText2 / UserText3	string	optional	Custom user-defined text fields

Update Inventory Item

Same fields as Create Inventory Item, plus:

Field	Type		Description
id	GUID	required	ID of the inventory item to update
All Create Inventory Item fields		optional	Any subset; quantity and cost fields are applied only when > 0

Response (both endpoints):

{
  "Success": true,
  "Data": {
    "id": "c56a4180-65aa-42ec-a945-5fd21dec0538",
    "name": "Laptop",
    "description": "Development laptop",
    "code": "LAPTOP-001",
    "status": "Active",
    "active": true,
    "qtyInStock": 5.00,
    "qtyWhenToReorder": 2.00,
    "qtyToReorder": 3.00,
    "unitsType": "each",
    "costUnit": 1200.00,
    "costClient": 1500.00,
    "leadTimeDays": 0,
    "buyOrBuild": "",
    "labor": 0.00,
    "weight": 0.00,
    "size": "",
    "condition": "",
    "sku": "LP-001",
    "vendorSku": "",
    "mfgSku": "",
    "modelNum": "",
    "serialNum": "",
    "vendor": "",
    "manufacturer": "",
    "location": "Warehouse A",
    "weblink": "",
    "notes": "",
    "userText1": "",
    "userText2": "",
    "userText3": "",
    "folder": "",
    "created": "2025-01-06T08:00:00Z",
    "modified": "2025-01-06T08:00:00Z"
  },
  "ErrorResults": ""
}

---

Categories New in 2.0.0

Create Category

Field	Type		Description
Name	string	required	Category name
Description	text	optional	Category description
ClientRate	number	optional	Billing rate for this category
SalaryRate	number	optional	Salary rate for this category
ProjectId	GUID	optional	Scope this category to a specific project
SubprojectId	GUID	optional	Scope this category to a specific subproject (dynamic dropdown)
UserId	GUID	optional	Scope this category to a specific user

Update Category

Same fields as Create Category, plus:

Field	Type		Description
id	GUID	required	ID of the category to update
All Create Category fields		optional	Any subset; ClientRate and SalaryRate are applied only when > 0

Response (both endpoints):

{
  "Success": true,
  "Data": {
    "id": "9b2d3f1a-4e8c-4a7b-b92d-3f5e2a1c8d4e",
    "name": "Development",
    "description": "Software development work",
    "active": true,
    "clientRate": 0.00,
    "salaryRate": 0.00,
    "projectId": "",
    "subprojectId": "",
    "userId": "",
    "folder": "",
    "created": "2025-01-06T08:00:00Z",
    "modified": "2025-01-06T08:00:00Z"
  },
  "ErrorResults": ""
}

---

Invoices New in 2.0.0

Create Invoice

Field	Type		Description
ClientId	GUID	required	Client this invoice is billed to (dynamic dropdown)
ProjectId	GUID	optional	Project reference
SubprojectId	GUID	optional	Subproject reference (dynamic dropdown)
TaskId	GUID	optional	Task reference
InvoiceNum	string	optional	Invoice number, e.g. INV-2025-001
DateSent	date	optional	ISO 8601 date
DueDate	date	optional	ISO 8601 date
Terms	integer	optional	Payment terms in days, e.g. 30. Distinct from Client's free-text Terms field.
PO	string	optional	Purchase order reference (text only)
Amount	number	optional	Invoice amount
TaxRate	number	optional	Tax rate percentage
InvoiceNote	text	optional	Note printed on the invoice
Notes	text	optional	Internal notes, not shown to the client
Representative	string	optional	Sales/account representative
StartRange / EndRange	date	optional	Billing period covered by this invoice

Update Invoice

Same fields as Create Invoice, plus:

Field	Type		Description
id	GUID	required	ID of the invoice to update
All Create Invoice fields		optional	Any subset; Terms, Amount, and TaxRate are applied only when > 0

Response (both endpoints): subTotal, taxAmount, datePaid, paidInFull, amountPaid, and balanceDue are calculated by Standard Time® and cannot be set directly.

{
  "Success": true,
  "Data": {
    "id": "e3d4c5b6-a7f8-4901-b234-c5d6e7f8a901",
    "invoiceNum": "INV-2025-001",
    "clientId": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
    "projectId": "d290f1ee-6c54-4b01-90e6-d701748f0851",
    "subprojectId": "",
    "taskId": "",
    "dateSent": "2025-01-31",
    "dueDate": "2025-02-28",
    "datePaid": "",
    "paidInFull": false,
    "subTotal": 5000.00,
    "taxRate": 0.00,
    "taxAmount": 0.00,
    "amount": 5000.00,
    "amountPaid": 0.00,
    "balanceDue": 5000.00,
    "terms": "30",
    "po": "",
    "invoiceNote": "Thank you for your business.",
    "notes": "",
    "representative": "",
    "startRange": "2025-01-01",
    "endRange": "2025-01-31",
    "created": "2025-01-31T10:00:00Z",
    "modified": "2025-01-31T10:00:00Z"
  },
  "ErrorResults": ""
}

---

Billing Rates New in 2.0.0

Create Billing Rate

Field	Type		Description
RateType	integer	optional	Numeric rate type code: 1 = by user, 2 = by project. Fixed in 2.0.0 — previously accepted as a string.
ClientRate	number	optional	Billable rate
SalaryRate	number	optional	Internal salary rate
StartDate / EndDate	date	optional	Date range this rate is effective
UserId	GUID	optional	Scope this rate to a specific user
ProjectId	GUID	optional	Scope this rate to a specific project
CategoryId	GUID	optional	Scope this rate to a specific category (dynamic dropdown)
RoleId	GUID	optional	Scope this rate to a specific role

Update Billing Rate

Same fields as Create Billing Rate, plus:

Field	Type		Description
id	GUID	required	ID of the billing rate to update
All Create Billing Rate fields		optional	Any subset; RateType, ClientRate, and SalaryRate are applied only when > 0

Response (both endpoints):

{
  "Success": true,
  "Data": {
    "id": "7f3d2a1b-4e5f-6a7b-8c9d-0e1f2a3b4c5d",
    "rateType": 1,
    "clientRate": 150.00,
    "salaryRate": 75.00,
    "startDate": "2025-01-01",
    "endDate": "",
    "userId": "",
    "projectId": "",
    "categoryId": "",
    "roleId": "",
    "created": "2025-01-06T08:00:00Z",
    "modified": "2025-01-06T08:00:00Z"
  },
  "ErrorResults": ""
}

Trigger Reference

Standard Time® supports 22 REST Hook triggers — one for each combination of record type (project, task, time log, expense, user, client, subproject, inventory, category, invoice, billing rate) and event (created, updated). Each trigger uses the Subscribe/Unsubscribe endpoints above and fires a webhook payload to Zapier whenever the corresponding event occurs.

Trigger Name	EventType	Fires when…
New Project	project.created	A project is created in Standard Time®
Updated Project	project.updated	A project's fields are modified
New Task	task.created	A task is created within a project
Updated Task	task.updated	A task's fields are modified
New Time Log	timelog.created	A time log is recorded
Updated Time Log	timelog.updated	A time log is modified
New Expense	expense.created	An expense record is created
Updated Expense	expense.updated	An expense record is modified
New User	user.created	A user account is created
Updated User	user.updated	A user account's details are modified
New Client New	client.created	A client is created
Updated Client New	client.updated	A client's fields are modified
New Subproject New	subproject.created	A subproject is created
Updated Subproject New	subproject.updated	A subproject's fields are modified
New Inventory Item New	inventory.created	An inventory item is created
Updated Inventory Item New	inventory.updated	An inventory item's fields are modified
New Category New	category.created	A category is created
Updated Category New	category.updated	A category's fields are modified
New Invoice New	invoice.created	An invoice is created
Updated Invoice New	invoice.updated	An invoice's fields are modified
New Billing Rate New	billingrate.created	A billing rate is created
Updated Billing Rate New	billingrate.updated	A billing rate's fields are modified

Webhook delivery is asynchronous and non-blocking — it does not delay the Standard Time® operation that caused it. Each webhook is delivered via HTTP POST to the registered hookUrl. If the subscriber URL is unreachable, Zapier handles retries according to its own retry policy.

Webhook Payload Schemas

Each webhook POST carries a JSON object. The event field identifies the trigger type; the remaining fields are the record's current state at the time of the event.

Project (created / updated)

{
  "event": "project.created",
  "id": "d290f1ee-6c54-4b01-90e6-d701748f0851",
  "name": "Website Redesign",
  "description": "Q1 redesign project",
  "clientId": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
  "status": "Active",
  "priority": "",
  "active": true,
  "projectCode": "",
  "billingType": "",
  "clientRate": 0.00,
  "salaryRate": 0.00,
  "qty": 0.00,
  "qtyBuilt": 0.00,
  "startDate": "2025-01-06",
  "finishDate": "2025-03-28",
  "launchDate": "",
  "deliveryDate": "",
  "quotedDuration": "",
  "quotedCost": "",
  "po": "",
  "userText1": "",
  "userText2": "",
  "userText3": "",
  "folder": "",
  "created": "2025-01-06T08:00:00Z",
  "modified": "2025-01-06T08:00:00Z"
}

Task (created / updated)

{
  "event": "task.created",
  "id": "c3d4e5f6-a7b8-9012-cdef-123456789012",
  "name": "Design Mockups",
  "description": "Initial wireframes",
  "projectId": "d290f1ee-6c54-4b01-90e6-d701748f0851",
  "subprojectId": "",
  "categoryId": "",
  "clientId": "",
  "status": "Active",
  "priority": "",
  "percentComplete": 0,
  "completed": false,
  "billable": true,
  "startDate": "2025-01-07",
  "finishDate": "2025-01-21",
  "dueDate": "",
  "completedDate": "",
  "durationHours": 0.00,
  "actualHours": 0.00,
  "remainingHours": 0.00,
  "costClient": 0.00,
  "costSalary": 0.00,
  "costClientActual": 0.00,
  "costClientRemain": 0.00,
  "costSalaryActual": 0.00,
  "costSalaryRemain": 0.00,
  "clientRate": 0.00,
  "salaryRate": 0.00,
  "quotedCost": "",
  "qty": 0.00,
  "qtyBuilt": 0.00,
  "userText1": "",
  "userText2": "",
  "userText3": "",
  "created": "2025-01-07T09:00:00Z",
  "modified": "2025-01-07T09:00:00Z"
}

Time Log (created / updated) renamed from Time Entry in 2.0.0

{
  "event": "timelog.created",
  "id": "e5f6a7b8-c9d0-1234-efab-234567890123",
  "projectId": "d290f1ee-6c54-4b01-90e6-d701748f0851",
  "taskId": "c3d4e5f6-a7b8-9012-cdef-123456789012",
  "subprojectId": "",
  "categoryId": "",
  "userId": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
  "clientId": "",
  "startTime": "2025-01-08T13:00:00Z",
  "date": "2025-01-08",
  "endTime": "2025-01-08T15:30:00Z",
  "durationHours": 2.5,
  "description": "Wireframe review session",
  "billable": true,
  "billed": false,
  "approved": false,
  "costClient": 0.00,
  "costSalary": 0.00,
  "clientRate": 0.00,
  "salaryRate": 0.00,
  "qty": 0.00,
  "location": "",
  "userText1": "",
  "userText2": "",
  "userText3": "",
  "created": "2025-01-08T15:30:00Z",
  "modified": "2025-01-08T15:30:00Z"
}

Expense (created / updated)

{
  "event": "expense.created",
  "id": "f6a7b8c9-d0e1-2345-fabc-345678901234",
  "projectId": "d290f1ee-6c54-4b01-90e6-d701748f0851",
  "clientId": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
  "subprojectId": "",
  "categoryId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "userId": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
  "expenseDate": "2025-01-09",
  "amount": 124.50,
  "price": 0.00,
  "qty": 0.00,
  "tax": 0.00,
  "mileageRate": 0.00,
  "distance": 0.00,
  "odometerBegin": 0.00,
  "odometerEnd": 0.00,
  "description": "Conference travel",
  "po": "",
  "payee": "",
  "checkNum": "",
  "location": "",
  "billable": true,
  "billed": false,
  "reimbursable": false,
  "reimbursed": false,
  "companyPaid": false,
  "approved": false,
  "userText1": "",
  "userText2": "",
  "userText3": "",
  "created": "2025-01-09T10:00:00Z",
  "modified": "2025-01-09T10:00:00Z"
}

User (created / updated)

{
  "event": "user.created",
  "id": "b2c3d4e5-f6a7-8901-bcde-f12345678901",
  "username": "mwilson",
  "email": "mwilson@example.com",
  "name": "Mike Wilson",
  "active": true,
  "admin": false,
  "contractor": false,
  "exempt": false,
  "workgroup": "",
  "department": "",
  "employeeNum": "",
  "resourceType": "",
  "hireDate": "",
  "clientRate": 0.00,
  "salaryRate": 0.00,
  "mileageRate": 0.00,
  "skills": "",
  "userRole": "",
  "managerId": "",
  "userText1": "",
  "userText2": "",
  "userText3": "",
  "created": "2025-01-10T08:00:00Z",
  "modified": "2025-01-10T08:00:00Z"
}

Client (created / updated) New in 2.0.0

{
  "event": "client.created",
  "id": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
  "companyName": "Acme Corporation",
  "description": "A sample client record",
  "status": "Active",
  "priority": "",
  "active": true,
  "terms": "Net 30",
  "web": "https://acme.example.com",
  "invoiceNote": "",
  "thisCompany": "",
  "taxRate": 0.00,
  "taxId": "",
  "mainContact": "John Smith",
  "mainContactPhone": "555-1234",
  "mainContactMobile": "",
  "mainContactFax": "",
  "mainContactEmail": "john@acme.com",
  "mainAddress1": "123 Main St",
  "mainAddress2": "",
  "mainCity": "Springfield",
  "mainState": "IL",
  "mainZip": "62701",
  "mainCountry": "USA",
  "billingContact": "",
  "billingContactPhone": "",
  "billingContactMobile": "",
  "billingContactFax": "",
  "billingContactEmail": "",
  "billingAddress1": "",
  "billingAddress2": "",
  "billingCity": "",
  "billingState": "",
  "billingZip": "",
  "billingCountry": "",
  "currencyId": "",
  "folder": "",
  "created": "2025-01-06T08:00:00Z",
  "modified": "2025-01-06T08:00:00Z"
}

Subproject (created / updated) New in 2.0.0

{
  "event": "subproject.created",
  "id": "a3bb189e-8bf9-3888-9912-ace4e6543002",
  "name": "Phase 1",
  "extendedName": "Website Redesign / Phase 1",
  "description": "Initial discovery and wireframing",
  "projectId": "d290f1ee-6c54-4b01-90e6-d701748f0851",
  "parentId": "",
  "status": "Active",
  "priority": "",
  "active": true,
  "level": 1,
  "order": 1,
  "projectCode": "",
  "startDate": "2025-01-06",
  "finishDate": "2025-01-31",
  "launchDate": "",
  "quotedDuration": "",
  "quotedCost": "",
  "clientRate": 0.00,
  "salaryRate": 0.00,
  "qty": 0.00,
  "qtyBuilt": 0.00,
  "userText1": "",
  "userText2": "",
  "userText3": "",
  "created": "2025-01-06T08:00:00Z",
  "modified": "2025-01-06T08:00:00Z"
}

Inventory (created / updated) New in 2.0.0

{
  "event": "inventory.created",
  "id": "c56a4180-65aa-42ec-a945-5fd21dec0538",
  "name": "Laptop",
  "description": "Development laptop",
  "code": "LAPTOP-001",
  "status": "Active",
  "active": true,
  "qtyInStock": 5.00,
  "qtyWhenToReorder": 2.00,
  "qtyToReorder": 3.00,
  "unitsType": "each",
  "costUnit": 1200.00,
  "costClient": 1500.00,
  "leadTimeDays": 0,
  "buyOrBuild": "",
  "labor": 0.00,
  "weight": 0.00,
  "size": "",
  "condition": "",
  "sku": "LP-001",
  "vendorSku": "",
  "mfgSku": "",
  "modelNum": "",
  "serialNum": "",
  "vendor": "",
  "manufacturer": "",
  "location": "Warehouse A",
  "weblink": "",
  "notes": "",
  "userText1": "",
  "userText2": "",
  "userText3": "",
  "folder": "",
  "created": "2025-01-06T08:00:00Z",
  "modified": "2025-01-06T08:00:00Z"
}

Category (created / updated) New in 2.0.0

{
  "event": "category.created",
  "id": "9b2d3f1a-4e8c-4a7b-b92d-3f5e2a1c8d4e",
  "name": "Development",
  "description": "Software development work",
  "active": true,
  "clientRate": 0.00,
  "salaryRate": 0.00,
  "projectId": "",
  "subprojectId": "",
  "userId": "",
  "folder": "",
  "created": "2025-01-06T08:00:00Z",
  "modified": "2025-01-06T08:00:00Z"
}

Invoice (created / updated) New in 2.0.0

{
  "event": "invoice.created",
  "id": "e3d4c5b6-a7f8-4901-b234-c5d6e7f8a901",
  "invoiceNum": "INV-2025-001",
  "clientId": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
  "projectId": "d290f1ee-6c54-4b01-90e6-d701748f0851",
  "subprojectId": "",
  "taskId": "",
  "dateSent": "2025-01-31",
  "dueDate": "2025-02-28",
  "datePaid": "",
  "paidInFull": false,
  "subTotal": 5000.00,
  "taxRate": 0.00,
  "taxAmount": 0.00,
  "amount": 5000.00,
  "amountPaid": 0.00,
  "balanceDue": 5000.00,
  "terms": "30",
  "po": "",
  "invoiceNote": "Thank you for your business.",
  "notes": "",
  "representative": "",
  "startRange": "2025-01-01",
  "endRange": "2025-01-31",
  "created": "2025-01-31T10:00:00Z",
  "modified": "2025-01-31T10:00:00Z"
}

Billing Rate (created / updated) New in 2.0.0

{
  "event": "billingrate.created",
  "id": "7f3d2a1b-4e5f-6a7b-8c9d-0e1f2a3b4c5d",
  "rateType": 1,
  "clientRate": 150.00,
  "salaryRate": 75.00,
  "startDate": "2025-01-01",
  "endDate": "",
  "userId": "",
  "projectId": "",
  "categoryId": "",
  "roleId": "",
  "created": "2025-01-06T08:00:00Z",
  "modified": "2025-01-06T08:00:00Z"
}

Security Notes

• Keys stored as SHA-256 hashes only — Standard Time® never persists a plaintext API key. The hash is computed at generation time; the original value is displayed once to the user and discarded.
• One active key per user — Generating a new key automatically revokes all previous keys for that user account.
• Header-based auth — Credentials travel in request headers, not in URLs or query strings (query string is a last-resort fallback only).
• Tenant isolation — Webhook subscriptions and API keys are scoped to the individual user. A webhook fires only to subscriptions registered by the authenticated user; it cannot access or trigger another user's Zaps. This applies uniformly across all 11 record types.
• HTTPS required — All communication must occur over HTTPS. Plain HTTP requests are rejected.
• No key retrieval — There is no endpoint that returns a plaintext API key. If a key is lost, generate a new one.

API Key Management (In-App)

API keys for the Zapier integration are managed inside Standard Time® — not through the Zapier dashboard. Navigate to Settings → Integrations → Zapier API Key to access the key management dialog.

Operations available in the dialog

Action	Result
Generate New Key	Creates a new key and displays the full plaintext value once. Any existing active key is immediately revoked. Copy the key before closing the dialog — it cannot be retrieved again.
Revoke Key	Permanently deactivates the current key. Existing Zaps that use the revoked key will stop working immediately until reconfigured with a new key.
Set Trace Level	Controls the detail level written to the ZapierDebug audit log: 0 = off, 1 = errors only, 2 = warnings + errors, 3 = all activity. Use level 3 temporarily when diagnosing integration issues.