Web3 Foundation

Web3 Foundation is a Swiss nonprofit founded in 2017 by Gavin Wood that funds research and development teams building the foundation of a decentralized web (Web3). It stewards and supports the Polkadot and Kusama networks, operates a research hub and an education/wiki program, and historically ran the Web3 Foundation Grants Program (now discontinued) to seed open-source software and protocol research. It is a funding and research organization rather than a traditional API provider: it publishes no public REST/OpenAPI surface, but does maintain an RFC 9116 security.txt and a coordinated vulnerability-disclosure program.

Web3 Foundation is profiled on the APIs.io network. Tagged areas include Company, Infrastructure, Web3, Blockchain, and Polkadot.

Web3 Foundation’s developer surface includes documentation, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

11.2/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Infrastructure Web3 Blockchain PolkadotKusamaResearch Grants Decentralization Non-Profit

Kin Score

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

Composite quality — 11.2/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 2.4 / 20

Access Clarity 2.1 / 20

Operational Transparency 1.7 / 13

Contract Governance 0.0 / 12

Discoverability 5.0 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 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

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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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Security Posture 2

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

Web3 Foundation Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Web3 Foundation Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

DomainSecurity

DomainSecurity

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: web3-foundation
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/web3-foundation.png
name: Web3 Foundation
description: 'Web3 Foundation is a Swiss nonprofit founded in 2017 by Gavin Wood that funds research and development teams
  building the foundation of a decentralized web (Web3). It stewards and supports the Polkadot and Kusama networks, operates
  a research hub and an education/wiki program, and historically ran the Web3 Foundation Grants Program (now discontinued)
  to seed open-source software and protocol research. It is a funding and research organization rather than a traditional
  API provider: it publishes no public REST/OpenAPI surface, but does maintain an RFC 9116 security.txt and a coordinated
  vulnerability-disclosure program.'
url: https://raw.githubusercontent.com/api-evangelist/web3-foundation/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- polychain
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Infrastructure
- Web3
- Blockchain
- Polkadot
- Kusama
- Research
- Grants
- Decentralization
- Non-Profit
tags_raw:
- Company
- Infrastructure
- Web3
- Blockchain
- Polkadot
- Kusama
- Research
- Grants
- Decentralization
- Nonprofit
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://web3.foundation
- type: Documentation
  url: https://education.web3.foundation
- type: Blog
  url: https://medium.com/web3foundation/
- type: GitHubOrganization
  url: https://github.com/w3f
- type: PrivacyPolicy
  url: https://web3.foundation/privacy-and-cookies/
- type: SecurityTxt
  url: well-known/web3-foundation-security.txt
- type: WellKnown
  url: well-known/web3-foundation-well-known.yml
- type: VulnerabilityDisclosure
  url: security/web3-foundation-vulnerability-disclosure.yml
- type: Security
  url: https://web3.foundation/security-report/
- type: DomainSecurity
  url: security/web3-foundation-domain-security.yml
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 4
  pass: local-v1

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