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.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles Harvest the way a machine reads it — 30 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Harvest scores 34.0/100 (thin), with a separate agent-readiness read of 17/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
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title="Harvest on API Evangelist — API profile and Kin Score">
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alt="Harvest Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Harvest
Each block below is one kind of artifact we hold for Harvest. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 12
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
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 within the panel for all 12 ·
Open Collections 13
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONHarvest API v2 Clients API
OPEN COLLECTIONHarvest API v2 Clients Company API
OPEN COLLECTIONHarvest API v2 Clients Estimates API
OPEN COLLECTIONHarvest API v2 Clients Expenses API
OPEN COLLECTIONHarvest API v2 Clients Invoices API
OPEN COLLECTIONHarvest API v2 Clients Projects API
OPEN COLLECTIONHarvest API v2 Clients Reports API
OPEN COLLECTIONHarvest API v2 Clients Roles API
OPEN COLLECTIONHarvest API v2 Clients Tasks API
OPEN COLLECTIONHarvest API v2 Clients TimeEntries API
OPEN COLLECTIONHarvest API v2 Clients Users API
OPEN COLLECTIONHarvest API v2
OPEN COLLECTIONScroll within the panel for all 13 ·
Security Posture 4
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Harvest — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 1
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 4
Authentication, authorization, and security posture
Operate 2
Status, limits, changes, and where to get help
Commercial 1
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 1
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/harvest · machine-readable index on apis.io
This is an independent, third-party profile of Harvest, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.