Gitcoin

Gitcoin is a public goods funding platform that enables communities to fund open-source software, research, and other digital public goods through quadratic funding, direct grants, and bounties. The platform provides REST APIs for querying grants, bounties, funding rounds, and project metadata, as well as the Gitcoin Passport Stamps API for verifiable credential scoring and identity verification.

Gitcoin publishes 6 APIs on the APIs.io network, including Bounties API, Contributors API, Grants API, and 3 more. Tagged areas include Public Goods, Grants, Bounties, Quadratic Funding, and Web3.

The Gitcoin catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Gitcoin’s developer surface includes authentication, engineering blog, documentation, support, and 13 more developer resources.

🌐 Visit website 📡 Source on GitHub
56.3/100 strong ▬ flat Agent 38/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serve⚡ Free to try
7 APIs
Public GoodsGrantsBountiesQuadratic FundingWeb3Verifiable CredentialsIdentityOpen Source

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 56.3/100 · strong
Contract Quality 19.0 / 25
Developer Ergonomics 6.1 / 20
Commercial Clarity 12.1 / 20
Operational Transparency 4.8 / 13
Governance 7.0 / 12
Discoverability 7.4 / 10
Agent readiness — 38/100 · agent ready
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 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 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/gitcoin: 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 7

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

Gitcoin Grants Stack Indexer API

GraphQL API for querying indexed on-chain data from the Gitcoin Grants Stack and Allo Protocol. Provides access to funding rounds, projects, applications, contributions, and qua...

Gitcoin Bounties API

Operations related to Gitcoin bounties

Gitcoin Contributors API

Operations for accessing contributor address data

Gitcoin Grants API

Operations related to Gitcoin grants

Gitcoin Model Analysis API

The Model Analysis API from Gitcoin — 1 operation(s) for model analysis.

Gitcoin Rounds API

Operations related to Gitcoin Grants funding rounds

Gitcoin Stamp API API

The Stamp API API from Gitcoin — 4 operation(s) for stamp api.

Scroll for all 7

Postman Collections 6

Ready-to-run Postman collections for exercising this provider's APIs.

Gitcoin Core Bounties API

POSTMAN

Gitcoin Core Bounties Contributors API

POSTMAN

Gitcoin Core Bounties Grants API

POSTMAN

Gitcoin Core Bounties Model Analysis API

POSTMAN

Gitcoin Core Bounties Rounds API

POSTMAN

Gitcoin Core Bounties Stamp API API

POSTMAN

GraphQL 1

GraphQL schemas published by this provider.

Gitcoin GraphQL API

The Gitcoin Grants Stack Indexer exposes a GraphQL API built with PostGraphile, which introspects a PostgreSQL database and auto-generates a fully-typed GraphQL schema from the ...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Plans

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Rate Limits

3 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

context Context

38 classes · 17 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Gitcoin API Rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 3

Standalone JSON Schema definitions for this provider's data models.

Gitcoin Bounty

34 properties

JSON SCHEMA

Gitcoin Grant

16 properties

JSON SCHEMA

Gitcoin Passport Stamp

3 properties

JSON SCHEMA

Examples 2

Example request and response payloads for these APIs.

Bounty Example

34 fields

EXAMPLE

Passport Score Example

7 fields

EXAMPLE

Security Posture 2

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

Gitcoin Authentication

apiKey/openIdConnect · 4 schemes

SECURITY

Gitcoin Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Gitcoin Agentic Access

13 operations

13 operations · 0 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

JSONLDContext
JSONLDContext

Build 3

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace
PostmanWorkspace
 GitHubOrganization
GitHubOrganization
 PythonClient
PythonClient

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 3

Status, limits, changes, and where to get help

Support
Support
 Discord
Discord
 Forums
Forums

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 4

The organization behind the API

Website
Website
 Blog
Blog
 Twitter
Twitter
 LinkedIn
LinkedIn

Source (apis.yml)

apis.yml Raw ↑ 
name: Gitcoin
description: Gitcoin is a public goods funding platform that enables communities to fund open-source software, research, and
  other digital public goods through quadratic funding, direct grants, and bounties. The platform provides REST APIs for querying
  grants, bounties, funding rounds, and project metadata, as well as the Gitcoin Passport Stamps API for verifiable credential
  scoring and identity verification.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/gitcoin.png
tags:
- Public Goods
- Grants
- Bounties
- Quadratic Funding
- Web3
- Verifiable Credentials
- Identity
- Open Source
created: '2026-06-14'
modified: '2026-06-14'
url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/apis.yml
specificationVersion: '0.19'
apis:
- name: Gitcoin Grants Stack Indexer API
  description: GraphQL API for querying indexed on-chain data from the Gitcoin Grants Stack and Allo Protocol. Provides access
    to funding rounds, projects, applications, contributions, and quadratic funding match calculations across supported EVM
    chains. Supports the GraphiQL playground for schema exploration.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://grants-stack-indexer-v2.gitcoin.co/graphiql
  baseURL: https://grants-stack-indexer-v2.gitcoin.co/graphql
  tags:
  - GraphQL
  - Grants Stack
  - Allo Protocol
  - Rounds
  - Projects
  - On-Chain
  properties:
  - type: Documentation
    url: https://docs.allo.gitcoin.co/
  - type: GraphQL
    url: https://grants-stack-indexer-v2.gitcoin.co/graphql
  - type: GraphiQL
    url: https://grants-stack-indexer-v2.gitcoin.co/graphiql
  - type: GitHubRepository
    url: https://github.com/gitcoinco/grants-stack-indexer
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/rate-limits/rate-limits.yml
  - url: graphql/gitcoin-schema.graphql
    type: GraphQLSchema
  contact:
  - FN: Gitcoin Support
    url: https://support.gitcoin.co/
    email: ''
  overlays: []
  aid: gitcoin:gitcoin-grants-stack-indexer-api
- aid: gitcoin:gitcoin-bounties-api
  name: Gitcoin Bounties API
  description: Operations related to Gitcoin bounties
  humanURL: https://docs.gitcoin.co/mk_rest_api/
  baseURL: https://gitcoin.co/api/v0.1
  tags:
  - Bounties
  properties:
  - type: OpenAPI
    url: openapi/gitcoin-bounties-api-openapi.yml
  - type: Documentation
    url: https://docs.gitcoin.co/mk_rest_api/
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/bounty.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/grant.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/examples/bounty-example.json
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/rate-limits/rate-limits.yml
  - type: GraphQL
    url: graphql/gitcoin-graphql.md
  - type: Documentation
    url: https://github.com/gitcoinco/web/blob/master/docs/API.md
  - type: Documentation
    url: https://docs.passport.human.tech/building-with-passport/passport-api/api-reference
  - type: GettingStarted
    url: https://docs.passport.human.tech/building-with-passport/passport-api/getting-access
  - type: DeveloperPortal
    url: https://developer.passport.xyz
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/passport-stamp.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/examples/passport-score-example.json
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/finops/finops.yml
- aid: gitcoin:gitcoin-contributors-api
  name: Gitcoin Contributors API
  description: Operations for accessing contributor address data
  humanURL: https://docs.gitcoin.co/mk_rest_api/
  baseURL: https://gitcoin.co/api/v0.1
  tags:
  - Contributors
  properties:
  - type: OpenAPI
    url: openapi/gitcoin-contributors-api-openapi.yml
  - type: Documentation
    url: https://docs.gitcoin.co/mk_rest_api/
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/bounty.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/grant.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/examples/bounty-example.json
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/rate-limits/rate-limits.yml
  - type: GraphQL
    url: graphql/gitcoin-graphql.md
  - type: Documentation
    url: https://github.com/gitcoinco/web/blob/master/docs/API.md
  - type: Documentation
    url: https://docs.passport.human.tech/building-with-passport/passport-api/api-reference
  - type: GettingStarted
    url: https://docs.passport.human.tech/building-with-passport/passport-api/getting-access
  - type: DeveloperPortal
    url: https://developer.passport.xyz
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/passport-stamp.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/examples/passport-score-example.json
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/finops/finops.yml
- aid: gitcoin:gitcoin-grants-api
  name: Gitcoin Grants API
  description: Operations related to Gitcoin grants
  humanURL: https://docs.gitcoin.co/mk_rest_api/
  baseURL: https://gitcoin.co/api/v0.1
  tags:
  - Grants
  properties:
  - type: OpenAPI
    url: openapi/gitcoin-grants-api-openapi.yml
  - type: Documentation
    url: https://docs.gitcoin.co/mk_rest_api/
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/bounty.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/grant.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/examples/bounty-example.json
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/rate-limits/rate-limits.yml
  - type: GraphQL
    url: graphql/gitcoin-graphql.md
  - type: Documentation
    url: https://github.com/gitcoinco/web/blob/master/docs/API.md
  - type: Documentation
    url: https://docs.passport.human.tech/building-with-passport/passport-api/api-reference
  - type: GettingStarted
    url: https://docs.passport.human.tech/building-with-passport/passport-api/getting-access
  - type: DeveloperPortal
    url: https://developer.passport.xyz
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/passport-stamp.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/examples/passport-score-example.json
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/finops/finops.yml
- aid: gitcoin:gitcoin-model-analysis-api
  name: Gitcoin Model Analysis API
  description: The Model Analysis API from Gitcoin — 1 operation(s) for model analysis.
  humanURL: https://docs.gitcoin.co/mk_rest_api/
  baseURL: https://gitcoin.co/api/v0.1
  tags:
  - Model Analysis
  properties:
  - type: OpenAPI
    url: openapi/gitcoin-model-analysis-api-openapi.yml
  - type: Documentation
    url: https://docs.gitcoin.co/mk_rest_api/
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/bounty.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/grant.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/examples/bounty-example.json
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/rate-limits/rate-limits.yml
  - type: GraphQL
    url: graphql/gitcoin-graphql.md
  - type: Documentation
    url: https://github.com/gitcoinco/web/blob/master/docs/API.md
  - type: Documentation
    url: https://docs.passport.human.tech/building-with-passport/passport-api/api-reference
  - type: GettingStarted
    url: https://docs.passport.human.tech/building-with-passport/passport-api/getting-access
  - type: DeveloperPortal
    url: https://developer.passport.xyz
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/passport-stamp.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/examples/passport-score-example.json
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/finops/finops.yml
- aid: gitcoin:gitcoin-rounds-api
  name: Gitcoin Rounds API
  description: Operations related to Gitcoin Grants funding rounds
  humanURL: https://docs.gitcoin.co/mk_rest_api/
  baseURL: https://gitcoin.co/api/v0.1
  tags:
  - Rounds
  properties:
  - type: OpenAPI
    url: openapi/gitcoin-rounds-api-openapi.yml
  - type: Documentation
    url: https://docs.gitcoin.co/mk_rest_api/
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/bounty.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/grant.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/examples/bounty-example.json
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/rate-limits/rate-limits.yml
  - type: GraphQL
    url: graphql/gitcoin-graphql.md
  - type: Documentation
    url: https://github.com/gitcoinco/web/blob/master/docs/API.md
  - type: Documentation
    url: https://docs.passport.human.tech/building-with-passport/passport-api/api-reference
  - type: GettingStarted
    url: https://docs.passport.human.tech/building-with-passport/passport-api/getting-access
  - type: DeveloperPortal
    url: https://developer.passport.xyz
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/passport-stamp.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/examples/passport-score-example.json
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/finops/finops.yml
- aid: gitcoin:gitcoin-stamp-api-api
  name: Gitcoin Stamp API API
  description: The Stamp API API from Gitcoin — 4 operation(s) for stamp api.
  humanURL: https://docs.gitcoin.co/mk_rest_api/
  baseURL: https://gitcoin.co/api/v0.1
  tags:
  - Stamp API
  properties:
  - type: OpenAPI
    url: openapi/gitcoin-stamp-api-api-openapi.yml
  - type: Documentation
    url: https://docs.gitcoin.co/mk_rest_api/
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/bounty.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/grant.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/examples/bounty-example.json
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/rate-limits/rate-limits.yml
  - type: GraphQL
    url: graphql/gitcoin-graphql.md
  - type: Documentation
    url: https://github.com/gitcoinco/web/blob/master/docs/API.md
  - type: Documentation
    url: https://docs.passport.human.tech/building-with-passport/passport-api/api-reference
  - type: GettingStarted
    url: https://docs.passport.human.tech/building-with-passport/passport-api/getting-access
  - type: DeveloperPortal
    url: https://developer.passport.xyz
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-schema/passport-stamp.json
  - type: Examples
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/examples/passport-score-example.json
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/finops/finops.yml
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/gitcoin/overview
- type: AgenticAccess
  url: agentic-access/gitcoin-agentic-access.yml
- type: DomainSecurity
  url: security/gitcoin-domain-security.yml
- type: Authentication
  url: authentication/gitcoin-authentication.yml
- type: Website
  url: https://gitcoin.co/
- type: Blog
  url: https://gitcoin.co/blog
- type: Documentation
  url: https://docs.gitcoin.co/
- type: GitHubOrganization
  url: https://github.com/gitcoinco
- type: Support
  url: https://support.gitcoin.co/
- type: Discord
  url: https://discord.gg/gitcoin
- type: Twitter
  url: https://twitter.com/gitcoin
- type: LinkedIn
  url: https://www.linkedin.com/company/gitcoin
- type: Forums
  url: https://gov.gitcoin.co/
- type: PythonClient
  url: https://github.com/gitcoinco/python-api-client
- type: TermsOfService
  url: https://gitcoin.co/terms
- type: PrivacyPolicy
  url: https://gitcoin.co/privacy
- type: JSONLDContext
  url: https://raw.githubusercontent.com/api-evangelist/gitcoin/refs/heads/main/json-ld/context.jsonld
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com