Fairmarkit website screenshot

Fairmarkit

Fairmarkit is an autonomous sourcing and strategic procurement platform that uses AI agents to automate the full sourcing lifecycle — from intake and request creation through RFQ/RFP/RFI events, supplier bidding, award, and purchase-order handoff to ERP and P2P systems. Fairmarkit publishes a public, OpenAPI 3.1-described Buyer Self-Service REST API (v3 and v4) and a Supplier Public API, secured with an X-FM-API-KEY header, covering RFQ/RFP events, requests and request items, suppliers, purchase orders, price books, datasets/data fields, business units, categories, identities, permission sets, data exports, and file attachments, plus a rich webhook notification catalog for procurement events. The company is backed by GGV Capital and Insight Partners.

Fairmarkit publishes 18 APIs on the APIs.io network, including Business Units API, Categories API, Data Exports API, and 15 more. Tagged areas include Company, Procurement, Sourcing, Supply Chain, and Purchasing.

The Fairmarkit catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Fairmarkit’s developer surface includes documentation, API reference, getting-started guide, authentication, support, engineering blog, changelog, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub
49.8/100 developing ▬ flat Agent 44/100 agent ready Full breakdown ↓
scored 2026-08-10 · rubric v0.9.1
AccessSelf serve
18 APIs 1 MCP Servers
CompanyProcurementSourcingSupply ChainPurchasingSuppliersRFQRFPSpend ManagementWebhooks

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-10 · rubric v0.9.1
Composite quality — 49.8/100 · developing
Contract Quality 17.1 / 25
Developer Ergonomics 11.2 / 20
Commercial Clarity 5.8 / 20
Operational Transparency 6.2 / 13
Governance 1.4 / 12
Discoverability 8.2 / 10
Agent readiness — 44/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 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/fairmarkit: 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 18

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

Fairmarkit Business Units API

The Business Units API from Fairmarkit — 2 operation(s) for business units.

Fairmarkit Categories API

The Categories API from Fairmarkit — 1 operation(s) for categories.

Fairmarkit Data Exports API

The Data Exports API from Fairmarkit — 3 operation(s) for data exports.

Fairmarkit Data Fields API

The Data Fields API from Fairmarkit — 6 operation(s) for data fields.

Fairmarkit ERP Systems API

The ERP Systems API from Fairmarkit — 1 operation(s) for erp systems.

Fairmarkit Event API

The Event API from Fairmarkit — 3 operation(s) for event.

Fairmarkit File attachments API

The File attachments API from Fairmarkit — 4 operation(s) for file attachments.

Fairmarkit Identity API

The Identity API from Fairmarkit — 2 operation(s) for identity.

Fairmarkit Price Books API

The Price Books API from Fairmarkit — 8 operation(s) for price books.

Fairmarkit Purchase Orders API

The Purchase Orders API from Fairmarkit — 3 operation(s) for purchase orders.

Fairmarkit Requests API

The Requests API from Fairmarkit — 23 operation(s) for requests.

Fairmarkit Responses API

The Responses API from Fairmarkit — 4 operation(s) for responses.

Fairmarkit RFP API

The RFP API from Fairmarkit — 5 operation(s) for rfp.

Fairmarkit RFQ API

The RFQ API from Fairmarkit — 11 operation(s) for rfq.

Fairmarkit Schema API

The Schema API from Fairmarkit — 2 operation(s) for schema.

Fairmarkit Supplier API

The Supplier API from Fairmarkit — 6 operation(s) for supplier.

Fairmarkit UOM API

The UOM API from Fairmarkit — 1 operation(s) for uom.

Fairmarkit User Profiles API

The User Profiles API from Fairmarkit — 1 operation(s) for user profiles.

Scroll for all 18

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

fairmarkit-mcp.yml

MCP SERVER

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Fairmarkit Webhooks

ASYNCAPI

Security Posture 2

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

Fairmarkit Authentication

apiKey · 1 scheme

SECURITY

Fairmarkit Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Fairmarkit Agentic Access

5 operations · 2 acting

5 operations · 2 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 LLMsTxt
LLMsTxt
 MCPServer
MCPServer
 AgentSkill
AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Webhooks
Webhooks
 Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conformance
Conformance
 DataModel
DataModel

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 Security
Security
 Compliance
Compliance

Operate 4

Status, limits, changes, and where to get help

Support
Support
 ChangeLog
ChangeLog
 ReleaseNotes
ReleaseNotes
 Deprecation
Deprecation

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: fairmarkit
name: Fairmarkit
description: Fairmarkit is an autonomous sourcing and strategic procurement platform that uses AI agents to automate the full
  sourcing lifecycle — from intake and request creation through RFQ/RFP/RFI events, supplier bidding, award, and purchase-order
  handoff to ERP and P2P systems. Fairmarkit publishes a public, OpenAPI 3.1-described Buyer Self-Service REST API (v3 and
  v4) and a Supplier Public API, secured with an X-FM-API-KEY header, covering RFQ/RFP events, requests and request items,
  suppliers, purchase orders, price books, datasets/data fields, business units, categories, identities, permission sets,
  data exports, and file attachments, plus a rich webhook notification catalog for procurement events. The company is backed
  by GGV Capital and Insight Partners.
url: https://raw.githubusercontent.com/api-evangelist/fairmarkit/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- ggv-capital
- insight-partners
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
image: https://cdn.prod.website-files.com/6974c3dfc9de89aed672a42c/69df9b1468ca1d50addc7ada_aac4c2022c593d27762cac87054f89ec_Opengraph_Homepage.png
tags:
- Company
- Procurement
- Sourcing
- Supply Chain
- Purchasing
- Suppliers
- RFQ
- RFP
- Spend Management
- Webhooks
apis:
- aid: fairmarkit:fairmarkit-business-units-api
  name: Fairmarkit Business Units API
  description: The Business Units API from Fairmarkit — 2 operation(s) for business units.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - Business Units
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-business-units-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-categories-api
  name: Fairmarkit Categories API
  description: The Categories API from Fairmarkit — 1 operation(s) for categories.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - Categories
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-categories-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-data-exports-api
  name: Fairmarkit Data Exports API
  description: The Data Exports API from Fairmarkit — 3 operation(s) for data exports.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - Data Exports
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-data-exports-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-data-fields-api
  name: Fairmarkit Data Fields API
  description: The Data Fields API from Fairmarkit — 6 operation(s) for data fields.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - Data Fields
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-data-fields-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-erp-systems-api
  name: Fairmarkit ERP Systems API
  description: The ERP Systems API from Fairmarkit — 1 operation(s) for erp systems.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - ERP Systems
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-erp-systems-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-event-api
  name: Fairmarkit Event API
  description: The Event API from Fairmarkit — 3 operation(s) for event.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - Event
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-event-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-file-attachments-api
  name: Fairmarkit File attachments API
  description: The File attachments API from Fairmarkit — 4 operation(s) for file attachments.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - File attachments
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-file-attachments-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-identity-api
  name: Fairmarkit Identity API
  description: The Identity API from Fairmarkit — 2 operation(s) for identity.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - Identity
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-identity-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-price-books-api
  name: Fairmarkit Price Books API
  description: The Price Books API from Fairmarkit — 8 operation(s) for price books.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - Price Books
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-price-books-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-purchase-orders-api
  name: Fairmarkit Purchase Orders API
  description: The Purchase Orders API from Fairmarkit — 3 operation(s) for purchase orders.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - Purchase Orders
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-purchase-orders-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-requests-api
  name: Fairmarkit Requests API
  description: The Requests API from Fairmarkit — 23 operation(s) for requests.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - Requests
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-requests-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-responses-api
  name: Fairmarkit Responses API
  description: The Responses API from Fairmarkit — 4 operation(s) for responses.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - Responses
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-responses-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-rfp-api
  name: Fairmarkit RFP API
  description: The RFP API from Fairmarkit — 5 operation(s) for rfp.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - RFP
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-rfp-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-rfq-api
  name: Fairmarkit RFQ API
  description: The RFQ API from Fairmarkit — 11 operation(s) for rfq.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - RFQ
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-rfq-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-schema-api
  name: Fairmarkit Schema API
  description: The Schema API from Fairmarkit — 2 operation(s) for schema.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - Schema
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-schema-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-supplier-api
  name: Fairmarkit Supplier API
  description: The Supplier API from Fairmarkit — 6 operation(s) for supplier.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - Supplier
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-supplier-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-uom-api
  name: Fairmarkit UOM API
  description: The UOM API from Fairmarkit — 1 operation(s) for uom.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - UOM
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-uom-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- aid: fairmarkit:fairmarkit-user-profiles-api
  name: Fairmarkit User Profiles API
  description: The User Profiles API from Fairmarkit — 1 operation(s) for user profiles.
  humanURL: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
  baseURL: https://staging.fairmarkit.com
  tags:
  - User Profiles
  properties:
  - type: OpenAPI
    url: openapi/fairmarkit-user-profiles-api-openapi.yml
  - type: Documentation
    url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/fairmarkit-domain-security.yml
- type: AgenticAccess
  url: agentic-access/fairmarkit-agentic-access.yml
- type: Website
  url: https://www.fairmarkit.com/
- type: DeveloperPortal
  url: https://developers.fairmarkit.com/
- type: Documentation
  url: https://docs.fairmarkit.com/
- type: APIReference
  url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- type: GettingStarted
  url: https://developers.fairmarkit.com/reference/getting-started-with-fairmarkit-api
- type: Authentication
  url: authentication/fairmarkit-authentication.yml
- type: Support
  url: https://fmkt.zendesk.com/hc/en-us
- type: Blog
  url: https://www.fairmarkit.com/blog
- type: GitHubOrganization
  url: https://github.com/fairmarkit
- type: TermsOfService
  url: https://www.fairmarkit.com/terms-of-service
- type: PrivacyPolicy
  url: https://www.fairmarkit.com/privacy-policy
- type: Security
  url: https://www.fairmarkit.com/security-statement
- type: Compliance
  url: https://www.fairmarkit.com/security-compliance
- type: Integrations
  url: https://www.fairmarkit.com/integrations
- type: ChangeLog
  url: changelog/fairmarkit-changelog.yml
- type: ReleaseNotes
  url: https://docs.fairmarkit.com/release-notes
- type: LLMsTxt
  url: llms/fairmarkit-llms.txt
- type: Webhooks
  url: asyncapi/fairmarkit-webhooks.yml
- type: Conventions
  url: conventions/fairmarkit-conventions.yml
- type: ErrorCatalog
  url: errors/fairmarkit-problem-types.yml
- type: Lifecycle
  url: lifecycle/fairmarkit-lifecycle.yml
- type: Deprecation
  url: lifecycle/fairmarkit-lifecycle.yml
- type: Conformance
  url: conformance/fairmarkit-conformance.yml
- type: DataModel
  url: data-model/fairmarkit-data-model.yml
- type: MCPServer
  url: mcp/fairmarkit-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence