Foundation

Foundation is a creator-focused NFT marketplace built on Ethereum that enables digital artists to mint, showcase, and auction unique digital artworks. The platform provides a GraphQL API via The Graph protocol for querying artwork, auctions, bids, collector profiles, offers, buy-now listings, and edition drop data. Foundation smart contracts remain live on Ethereum mainnet, and the subgraph continues to index on-chain activity for programmatic access.

Foundation publishes 2 APIs on the APIs.io network. Tagged areas include NFT, Digital Art, Marketplace, Ethereum, and Web3.

Foundation’s developer surface includes engineering blog and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

31.1/100 thin ▬ flat Agent 16/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemium

2 APIs

NFT Digital Art Marketplace Ethereum Web3 Blockchain Creators Auctions Collectors

Kin Score

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

Composite quality — 31.1/100 · thin

Contract Quality 9.3 / 25

Developer Ergonomics 1.9 / 20

Access Clarity 7.9 / 20

Operational Transparency 5.1 / 13

Contract Governance 0.0 / 12

Discoverability 6.9 / 10

Agent readiness — 16/100 · agent aware

Machine-Readable Contract 18 / 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 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

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.

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/foundation: 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 2

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

Foundation Subgraph API

GraphQL API powered by The Graph protocol that indexes all Foundation NFT marketplace activity on Ethereum mainnet. Supports queries for NFTs, creators, collectors, auctions, bi...

Foundation Smart Contract API

Ethereum smart contract interface for direct on-chain interaction with Foundation marketplace contracts. Supports minting NFTs, creating and bidding in auctions, placing and acc...

GraphQL 1

GraphQL schemas published by this provider.

Foundation GraphQL API

Foundation was a creator-focused NFT marketplace built on Ethereum that enabled digital artists to mint, showcase, and auction unique digital artworks. The platform exposed a Gr...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Plans

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Rate Limits

1 limits

RATE LIMITS

FinOps 1

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

Finops

FINOPS

Security Posture 2

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

Foundation Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Foundation Vulnerability Disclosure

disclosure policy published

SECURITY

Resources

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Releases

Releases

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 4

The organization behind the API

Website

Website

Twitter

Twitter

Blog

Blog

LinkedIn

Source (apis.yml)

name: Foundation
description: Foundation is a creator-focused NFT marketplace built on Ethereum that enables digital artists to mint, showcase,
  and auction unique digital artworks. The platform provides a GraphQL API via The Graph protocol for querying artwork, auctions,
  bids, collector profiles, offers, buy-now listings, and edition drop data. Foundation smart contracts remain live on Ethereum
  mainnet, and the subgraph continues to index on-chain activity for programmatic access.
deliveryModel:
  model: unknown
  open_source: unknown
  commercial: true
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - pricing
  - repository-unlicensed
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/foundation.png
tags:
- NFT
- Digital Art
- Marketplace
- Ethereum
- Web3
- Blockchain
- Creators
- Auctions
- Collectors
created: '2026-06-13'
modified: '2026-06-13'
url: https://raw.githubusercontent.com/api-evangelist/foundation/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- name: Foundation Subgraph API
  description: GraphQL API powered by The Graph protocol that indexes all Foundation NFT marketplace activity on Ethereum
    mainnet. Supports queries for NFTs, creators, collectors, auctions, bids, offers, buy-now listings, percent splits, FETH
    escrow balances, and full event history. Developers use this as the primary programmatic interface to Foundation on-chain
    data.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://api.thegraph.com/subgraphs/name/f8n/fnd
  humanURL: https://thegraph.com/hosted-service/subgraph/f8n/fnd
  tags:
  - GraphQL
  - NFT
  - Subgraph
  - The Graph
  - Auctions
  - Digital Art
  properties:
  - type: Documentation
    url: https://github.com/f8n/fnd-protocol
  - type: GitHubOrganization
    url: https://github.com/f8n
  - type: GitHubRepository
    url: https://github.com/f8n/fnd-protocol
  - type: GitHubRepository
    url: https://github.com/f8n/fnd-protocol-examples
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/foundation/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/foundation/refs/heads/main/rate-limits/rate-limits.yml
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/foundation/refs/heads/main/finops/finops.yml
  - url: graphql/foundation-graphql.md
    type: GraphQL
  contact:
  - FN: Foundation Protocol Discussions
    url: https://github.com/f8n/fnd-protocol/discussions
- name: Foundation Smart Contract API
  description: Ethereum smart contract interface for direct on-chain interaction with Foundation marketplace contracts. Supports
    minting NFTs, creating and bidding in auctions, placing and accepting offers, buy-now listings, and deploying NFT collection
    contracts via the factory. Contracts are deployed on Ethereum mainnet and remain operational for direct RPC access via
    providers such as Alchemy or Infura.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://eth-mainnet.alchemyapi.io
  humanURL: https://github.com/f8n/fnd-protocol
  tags:
  - Smart Contracts
  - Ethereum
  - Solidity
  - Mainnet
  - NFT Minting
  - Auctions
  - RPC
  properties:
  - type: Documentation
    url: https://github.com/f8n/fnd-protocol
  - type: GitHubRepository
    url: https://github.com/f8n/fnd-protocol
  - type: NPMPackage
    url: https://www.npmjs.com/package/@f8n/fnd-protocol
  - type: BugBounty
    url: https://immunefi.com/bounty/foundation/
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/foundation/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/foundation/refs/heads/main/rate-limits/rate-limits.yml
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/foundation/refs/heads/main/finops/finops.yml
  contact:
  - FN: Foundation Protocol Issues
    url: https://github.com/f8n/fnd-protocol/issues
common:
- type: Website
  url: https://www.foundation.app/
- type: Releases
  url: https://github.com/f8n/fnd-protocol/releases
- type: VulnerabilityDisclosure
  url: security/foundation-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/foundation-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/f8n
- type: TermsOfService
  url: https://foundation.app/tos
- type: PrivacyPolicy
  url: https://foundation.app/privacy
- type: Twitter
  url: https://twitter.com/foundation
- type: Blog
  url: https://foundation.app/blog
- type: LinkedIn
  url: https://www.linkedin.com/company/foundationapp
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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