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 14 more developer resources.

🌐 Visit website 📡 Source on GitHub

53.4/100 developing ▬ flat Agent 31/100 agent ready Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

3 APIs

Public GoodsGrants BountiesQuadratic FundingWeb3 Verifiable Credentials Identity Open-Source

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 53.4/100 · developing

Contract Quality 18.3 / 25

Developer Ergonomics 10.0 / 20

Access Clarity 12.1 / 20

Operational Transparency 4.4 / 13

Contract Governance 1.2 / 12

Discoverability 7.4 / 10

Agent readiness — 31/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 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 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. 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. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

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

Gitcoin Core Bounties Stamp API API

OPEN COLLECTION

Scroll for all 7

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

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 4

Status, limits, changes, and where to get help

IssueTracker

Support

Discord

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

Source (apis.yml)

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.
deliveryModel:
  model: unknown
  open_source: unknown
  commercial: true
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  - pricing
  - repository-unlicensed
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  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
tags_raw:
- 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: '0.23'
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
  - Project
  - Onchain
  tags_raw:
  - 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: IssueTracker
  url: https://github.com/gitcoinco/grants-stack-indexer/issues
- 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

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