Harvest website screenshot

Harvest

Harvest is a cloud-based time tracking, project management, expense tracking, and invoicing platform used by agencies, consultancies, and professional services teams to track billable hours, manage budgets, and bill clients. The platform provides reporting on team utilization, project profitability, and budget burn, and integrates with tools like Asana, Trello, Slack, and QuickBooks. Harvest's REST API v2 provides full programmatic access to clients, projects, tasks, time entries, expenses, invoices, estimates, and users using OAuth 2.0 or Personal Access Token authentication.

Harvest publishes 11 APIs on the APIs.io network, including Clients API, Company API, Estimates API, and 8 more. Tagged areas include Time Tracking, Project Management, Invoicing, Expense Tracking, and Timesheets.

Harvest’s developer surface includes authentication, documentation, pricing, signup flow, engineering blog, support, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub
32.4/100 thin ▬ flat Agent 28/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessSelf serve
12 APIs
Time TrackingProject ManagementInvoicingExpense TrackingTimesheetsProfessional Services

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 32.4/100 · thin
Contract Quality 13.4 / 25
Developer Ergonomics 5.2 / 20
Commercial Clarity 3.7 / 20
Operational Transparency 2.7 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 28/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/harvest: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 12

Individual APIs this provider publishes, each with its own machine-readable definition.

Harvest API v2

REST API for managing clients, projects, tasks, time entries, expenses, invoices, estimates, and users in Harvest. Supports OAuth 2.0 and Personal Access Token authentication, r...

Harvest Clients API

The Clients API from Harvest — 2 operation(s) for clients.

Harvest Company API

The Company API from Harvest — 1 operation(s) for company.

Harvest Estimates API

The Estimates API from Harvest — 2 operation(s) for estimates.

Harvest Expenses API

The Expenses API from Harvest — 2 operation(s) for expenses.

Harvest Invoices API

The Invoices API from Harvest — 2 operation(s) for invoices.

Harvest Projects API

The Projects API from Harvest — 2 operation(s) for projects.

Harvest Reports API

The Reports API from Harvest — 4 operation(s) for reports.

Harvest Roles API

The Roles API from Harvest — 2 operation(s) for roles.

Harvest Tasks API

The Tasks API from Harvest — 2 operation(s) for tasks.

Harvest TimeEntries API

The TimeEntries API from Harvest — 5 operation(s) for timeentries.

Harvest Users API

The Users API from Harvest — 3 operation(s) for users.

Scroll for all 12

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Harvest API v2

OPEN COLLECTION

Security Posture 4

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Harvest Authentication

http · 1 scheme

SECURITY

Harvest Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Harvest Vulnerability Disclosure

disclosure policy published

SECURITY

Harvest Trust Center

SOC 2, PCI DSS

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Harvest Agentic Access

55 operations · 31 acting · 2 human-in-the-loop

55 operations · 31 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Signup
Signup

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage

Commercial 1

Pricing, plans, and the legal terms of use

Pricing
Pricing

Company 3

The organization behind the API

Website
Website
 Blog
Blog
 LinkedIn
LinkedIn

Source (apis.yml)

apis.yml Raw ↑ 
aid: harvest
name: Harvest
description: Harvest is a cloud-based time tracking, project management, expense tracking, and invoicing platform used by
  agencies, consultancies, and professional services teams to track billable hours, manage budgets, and bill clients. The
  platform provides reporting on team utilization, project profitability, and budget burn, and integrates with tools like
  Asana, Trello, Slack, and QuickBooks. Harvest's REST API v2 provides full programmatic access to clients, projects, tasks,
  time entries, expenses, invoices, estimates, and users using OAuth 2.0 or Personal Access Token authentication.
type: Index
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/harvest.png
tags:
- Time Tracking
- Project Management
- Invoicing
- Expense Tracking
- Timesheets
- Professional Services
url: https://raw.githubusercontent.com/api-evangelist/harvest/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-05-11'
specificationVersion: '0.19'
apis:
- aid: harvest:api-v2
  name: Harvest API v2
  description: REST API for managing clients, projects, tasks, time entries, expenses, invoices, estimates, and users in Harvest.
    Supports OAuth 2.0 and Personal Access Token authentication, requires a Harvest-Account-Id header, and uses standard JSON
    request/response over HTTPS.
  humanURL: https://help.getharvest.com/api-v2/
  baseURL: https://api.harvestapp.com/v2
  tags:
  - Time Tracking
  - Project Management
  - Invoicing
  - Expense Tracking
  - Timesheets
  - OAuth 2.0
  - Personal Access Token
  properties:
  - type: Documentation
    url: https://help.getharvest.com/api-v2/
  - type: Authentication
    url: https://help.getharvest.com/api-v2/authentication-api/authentication/authentication/
  - type: Overview
    url: https://help.getharvest.com/api-v2/introduction/overview/general/
- aid: harvest:harvest-clients-api
  name: Harvest Clients API
  description: The Clients API from Harvest — 2 operation(s) for clients.
  humanURL: https://help.getharvest.com/api-v2/
  baseURL: https://api.harvestapp.com/v2
  tags:
  - Clients
  properties:
  - type: OpenAPI
    url: openapi/harvest-clients-api-openapi.yml
- aid: harvest:harvest-company-api
  name: Harvest Company API
  description: The Company API from Harvest — 1 operation(s) for company.
  humanURL: https://help.getharvest.com/api-v2/
  baseURL: https://api.harvestapp.com/v2
  tags:
  - Company
  properties:
  - type: OpenAPI
    url: openapi/harvest-company-api-openapi.yml
- aid: harvest:harvest-estimates-api
  name: Harvest Estimates API
  description: The Estimates API from Harvest — 2 operation(s) for estimates.
  humanURL: https://help.getharvest.com/api-v2/
  baseURL: https://api.harvestapp.com/v2
  tags:
  - Estimates
  properties:
  - type: OpenAPI
    url: openapi/harvest-estimates-api-openapi.yml
- aid: harvest:harvest-expenses-api
  name: Harvest Expenses API
  description: The Expenses API from Harvest — 2 operation(s) for expenses.
  humanURL: https://help.getharvest.com/api-v2/
  baseURL: https://api.harvestapp.com/v2
  tags:
  - Expenses
  properties:
  - type: OpenAPI
    url: openapi/harvest-expenses-api-openapi.yml
- aid: harvest:harvest-invoices-api
  name: Harvest Invoices API
  description: The Invoices API from Harvest — 2 operation(s) for invoices.
  humanURL: https://help.getharvest.com/api-v2/
  baseURL: https://api.harvestapp.com/v2
  tags:
  - Invoices
  properties:
  - type: OpenAPI
    url: openapi/harvest-invoices-api-openapi.yml
- aid: harvest:harvest-projects-api
  name: Harvest Projects API
  description: The Projects API from Harvest — 2 operation(s) for projects.
  humanURL: https://help.getharvest.com/api-v2/
  baseURL: https://api.harvestapp.com/v2
  tags:
  - Projects
  properties:
  - type: OpenAPI
    url: openapi/harvest-projects-api-openapi.yml
- aid: harvest:harvest-reports-api
  name: Harvest Reports API
  description: The Reports API from Harvest — 4 operation(s) for reports.
  humanURL: https://help.getharvest.com/api-v2/
  baseURL: https://api.harvestapp.com/v2
  tags:
  - Reports
  properties:
  - type: OpenAPI
    url: openapi/harvest-reports-api-openapi.yml
- aid: harvest:harvest-roles-api
  name: Harvest Roles API
  description: The Roles API from Harvest — 2 operation(s) for roles.
  humanURL: https://help.getharvest.com/api-v2/
  baseURL: https://api.harvestapp.com/v2
  tags:
  - Roles
  properties:
  - type: OpenAPI
    url: openapi/harvest-roles-api-openapi.yml
- aid: harvest:harvest-tasks-api
  name: Harvest Tasks API
  description: The Tasks API from Harvest — 2 operation(s) for tasks.
  humanURL: https://help.getharvest.com/api-v2/
  baseURL: https://api.harvestapp.com/v2
  tags:
  - Tasks
  properties:
  - type: OpenAPI
    url: openapi/harvest-tasks-api-openapi.yml
- aid: harvest:harvest-timeentries-api
  name: Harvest TimeEntries API
  description: The TimeEntries API from Harvest — 5 operation(s) for timeentries.
  humanURL: https://help.getharvest.com/api-v2/
  baseURL: https://api.harvestapp.com/v2
  tags:
  - TimeEntries
  properties:
  - type: OpenAPI
    url: openapi/harvest-timeentries-api-openapi.yml
- aid: harvest:harvest-users-api
  name: Harvest Users API
  description: The Users API from Harvest — 3 operation(s) for users.
  humanURL: https://help.getharvest.com/api-v2/
  baseURL: https://api.harvestapp.com/v2
  tags:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/harvest-users-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/harvest-agentic-access.yml
- type: TrustCenter
  url: security/harvest-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/harvest-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/harvest-domain-security.yml
- type: Authentication
  url: authentication/harvest-authentication.yml
- type: Website
  url: https://www.getharvest.com
- type: Documentation
  url: https://help.getharvest.com/api-v2/
- type: Pricing
  url: https://www.getharvest.com/pricing
- type: Signup
  url: https://id.getharvest.com/signup
- type: Blog
  url: https://www.getharvest.com/blog
- type: Support
  url: https://help.getharvest.com
- type: StatusPage
  url: https://www.harveststatus.com
- type: GitHubOrganization
  url: https://github.com/harvesthq
- type: LinkedIn
  url: https://www.linkedin.com/company/harvest
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com