Fairing

Fairing is a post‑purchase attribution platform used by over 3,500 ecommerce brands to understand how customers discovered them, why they bought, and what almost stopped a purchase, by asking brief surveys immediately after checkout. The service provides actionable insights into marketing channels, including AI‑driven attribution, and integrates with Shopify, WooCommerce, Salesforce Commerce Cloud, Recharge and headless stores via a Web SDK. Trusted by thousands of brands, Fairing helps marketers allocate spend more effectively and improve ROI.

Fairing publishes 3 API contracts indexed on the APIs.io network: Questions API, Responses API, and Sources API. Tagged areas include Post-Purchase, Surveys, Marketing, Attribution, and Ecommerce.

The Fairing catalog on APIs.io includes 1 Spectral governance ruleset.

Fairing’s developer surface includes changelog, support, API reference, getting-started guide, documentation, engineering blog, pricing, and 17 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

49.2/100 developing Agent 51/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 1 MCP Servers 3 Agent Skills

Post-Purchase Surveys Marketing AttributionEcommerce

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 49.2/100 · developing

Contract Quality 10.2 / 21

Developer Ergonomics 7.2 / 17

Access Clarity 13.0 / 17

Operational Transparency 1.7 / 11

Contract Governance 1.9 / 10

Discoverability 5.5 / 9

Regulatory Posture 5.1 / 15

Agent readiness — 51/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/fairing/"><img src="https://apis.io/badge/fairing/card.svg" alt="Fairing on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's
Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter

1 more unmet check in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 47.8 — up to +13.1 composite points
Developer Ergonomics scores 42.1 — up to +11.6 composite points
Operational Transparency scores 15.8 — up to +10.9 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/fairing/apis.yml: open an issue on github.com/api-evangelist/fairing to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 3

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

Fairing Questions API

The Questions API from Fairing — 1 operation(s) for questions.

Fairing Responses API

The Responses API from Fairing — 1 operation(s) for responses.

Fairing Sources API

The Sources API from Fairing — 1 operation(s) for sources.

MCP Servers 1

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

Fairing MCP Server

Remote MCP server at docs.fairing.co.

MCP SERVER

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

post-sources

AGENT SKILL

retrieve-questions

AGENT SKILL

retrieve-responses

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Fairing Plans Pricing

9 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Fairing Rate Limits

0 limits

RATE LIMITS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Fairing API Rules

11 rules · 9 errors 1 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Fairing Openapi Overlay

0 actions · update · fairing-api-openapi.yml

DERIVED

Security Posture 2

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

Fairing Authentication

0 schemes

SECURITY

Fairing Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Fairing Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Fairing Agentic Access

3 operations · 1 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

WellKnown

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Spectral

Spectral

ErrorCatalog

ErrorCatalog

Conformance

Conformance

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Support

Support

ChangeLog

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: fairing
name: Fairing
description: Fairing is a post‑purchase attribution platform used by over 3,500 ecommerce brands to understand how customers
  discovered them, why they bought, and what almost stopped a purchase, by asking brief surveys immediately after checkout.
  The service provides actionable insights into marketing channels, including AI‑driven attribution, and integrates with Shopify,
  WooCommerce, Salesforce Commerce Cloud, Recharge and headless stores via a Web SDK. Trusted by thousands of brands, Fairing
  helps marketers allocate spend more effectively and improve ROI.
image: https://framerusercontent.com/images/YUAqUYpgssxmlILYVvvvc8JaoIA.webp
url: https://artifacts.apis.io/fairing/apis.yml
x-type: company
x-source: harvest:vc-portfolio
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-29 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-29'
modified: '2026-10-29'
tags:
- Post-Purchase
- Surveys
- Marketing
- Attribution
- Ecommerce
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/fairing-agentic-access.yml
- type: Plans
  url: plans/fairing-plans-pricing.yml
- type: Spectral
  url: rules/fairing-rules.yml
- type: AgentSkill
  url: skills/_index.yml
- type: ChangeLog
  url: changelog/fairing-changelog.yml
- type: ErrorCatalog
  url: errors/fairing-problem-types.yml
- type: Conformance
  url: conformance/fairing-conformance.yml
- type: LLMsTxt
  url: llms/fairing-llms.txt
- type: MCPServer
  url: mcp/fairing-mcp.yml
- type: WellKnown
  url: well-known/fairing-well-known.yml
- type: Hosts
  url: hosts/fairing-hosts.yml
- type: Vendors
  url: vendors/fairing-vendors.yml
- type: Support
  url: https://support.fairing.co/
- type: Login
  url: https://app.fairing.co/login
- type: ChangeLog
  url: https://docs.fairing.co/docs/release-notes
- type: APIReference
  url: https://docs.fairing.co/reference
- type: GettingStarted
  url: https://docs.fairing.co/docs/sdk
- type: Documentation
  url: https://docs.fairing.co/
- type: DomainSecurity
  url: security/fairing-domain-security.yml
- type: Website
  url: https://fairing.co
- type: Blog
  url: https://fairing.co/blog
- type: Pricing
  url: https://fairing.co/pricing
- type: TermsOfService
  url: https://fairing.co/terms
- type: PrivacyPolicy
  url: https://fairing.co/privacy
apis:
- aid: fairing:fairing-questions-api
  name: Fairing Questions API
  description: The Questions API from Fairing — 1 operation(s) for questions.
  humanURL: https://docs.fairing.co/reference/api
  baseURL: https://app.fairing.co/api
  tags:
  - Questions
  properties:
  - type: OpenAPI
    url: openapi/fairing-questions-api-openapi.yml
- aid: fairing:fairing-responses-api
  name: Fairing Responses API
  description: The Responses API from Fairing — 1 operation(s) for responses.
  humanURL: https://docs.fairing.co/reference/api
  baseURL: https://app.fairing.co/api
  tags:
  - Responses
  properties:
  - type: OpenAPI
    url: openapi/fairing-responses-api-openapi.yml
- aid: fairing:fairing-sources-api
  name: Fairing Sources API
  description: The Sources API from Fairing — 1 operation(s) for sources.
  humanURL: https://docs.fairing.co/reference/api
  baseURL: https://app.fairing.co/api
  tags:
  - Sources
  properties:
  - type: OpenAPI
    url: openapi/fairing-sources-api-openapi.yml
x-backed-by:
- true-ventures
x-enrichment:
  date: '2026-10-29'
  status: enriched
  artifacts_added: 39
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

Fairing API — frequently asked questions

Does Fairing have an API?

Yes. APIs.io lists 3 APIs from Fairing, including Fairing Questions API, Fairing Responses API and Fairing Sources API.

Is there an OpenAPI specification for the Fairing API?

Yes. APIs.io indexes 3 OpenAPI specifications for Fairing, each linked for download from this page.

How do I authenticate with the Fairing API?

Fairing documents its authentication (0 schemes). The details are profiled on APIs.io as Fairing Authentication.

How much does the Fairing API cost?

APIs.io lists 9 pricing plans for Fairing, with each plan's price, limits and inclusions under Pricing Plans on this page.

Does Fairing have an MCP server?

Yes. APIs.io lists 1 MCP server for Fairing: Remote MCP server at docs.fairing.co.

Is the Fairing API ready for AI agents?

Fairing has a Kin Score of 49.2 out of 100 (developing) and an Agent Readiness score of 51.2 (agent-ready), scored by API Evangelist on 2026-10-31.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/fairing"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/fairing/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/fairing/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.