Percy

Percy is an all-in-one visual testing and review platform, now part of BrowserStack. Test frameworks and CI upload DOM snapshots via the Percy CLI/SDK; Percy renders them across browsers and widths, diffs each against an approved baseline, and surfaces pixel-level visual changes for review and approval. On top of that workflow Percy exposes a documented REST API under https://percy.io/api/v1 for reading and managing Projects, Builds, and Snapshots, plus Visual Git (branchline) sync and merge operations. The snapshot capture/upload path itself is driven by the open-source Percy CLI and SDKs rather than a public REST upload endpoint.

Percy publishes 4 API contracts indexed on the APIs.io network, including Builds API, Projects API, Snapshots API, and 1 more. Tagged areas include Visual Testing, Visual Regression, Screenshots, QA, and Testing.

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

Percy’s developer surface includes authentication, documentation, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

28.3/100 thin ▬ flat Agent 19/100 agent aware Heartbeat 47/100 slowing saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Visual Testing Visual Regression Screenshots QA Testing CI/CDBrowserStackDeveloper Tools

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Software Product Engineering Management

BC-4200

BuildsSnapshots

POST /builds/{build_id}/fail POST /reviews GET /snapshots GET /snapshots/{snapshot_id}

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 28.3/100 · thin

Contract Quality 9.6 / 19

Developer Ergonomics 4.8 / 15

Access Clarity 1.2 / 15

Operational Transparency 1.0 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 0.9 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 19/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 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

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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/percy/"><img src="https://apis.io/badge/percy/card.svg" alt="Percy 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

10 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 32.1 — up to +13.6 composite points
Contract Quality scores 51.1 — up to +12.2 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/percy/apis.yml: open an issue on github.com/api-evangelist/percy 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
GitHub Marketplace (GitHub-native publisher layer)	builds-on	51.7	-	-
Atlassian Marketplace (builders on Jira, Confluence, Bitbucket)	builds-on	51.7	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 4

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

Percy Builds API

A build logically groups the test sessions and snapshots of a run.

Percy Projects API

A project logically groups builds on Percy.

Percy Snapshots API

Snapshots are the individual visual comparisons within a build.

Percy Visual Git API

Branchline sync and merge of approved snapshots across branch lines.

Open Collections 5

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Percy REST Builds API

OPEN COLLECTION

Percy REST Builds Projects API

OPEN COLLECTION

Percy REST Builds Snapshots API

OPEN COLLECTION

Percy REST Builds Visual Git API

OPEN COLLECTION

Percy REST API

OPEN COLLECTION

Percy API pricing

Not yet checked against Percy's own pricing page. Compiled by API Evangelist on 2026-07-11 from percy.io/pricing; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free free	Free
Professional paid	—
Enterprise / Custom enterprise	—

Plan details, limits and sources →

Rate limits

REST API Request Rate: not published requests
Monthly Screenshot Allowance: per plan (5,000/month on Free) screenshots
Builds List Page Size: 30 builds

Compiled by API Evangelist, not yet checked against Percy's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Percy Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Percy Rate Limits

5 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Percy

SLA

FinOps 1

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

Percy Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Percy API Rules

61 rules · 59 errors 1 warnings 1 info

SPECTRAL

Security Posture 1

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

Percy Authentication

apiKey/http · 2 schemes

SECURITY

Agentic Access 1

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

Percy Agentic Access

13 operations · 7 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

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: percy
url: https://raw.githubusercontent.com/api-evangelist/percy/refs/heads/main/apis.yml
name: Percy
kind: company
description: Percy is an all-in-one visual testing and review platform, now part of BrowserStack. Test frameworks and CI upload
  DOM snapshots via the Percy CLI/SDK; Percy renders them across browsers and widths, diffs each against an approved baseline,
  and surfaces pixel-level visual changes for review and approval. On top of that workflow Percy exposes a documented REST
  API under https://percy.io/api/v1 for reading and managing Projects, Builds, and Snapshots, plus Visual Git (branchline)
  sync and merge operations. The snapshot capture/upload path itself is driven by the open-source Percy CLI and SDKs rather
  than a public REST upload endpoint.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/percy.png
tags:
- Visual Testing
- Visual Regression
- Screenshots
- QA
- Testing
- CI/CD
- BrowserStack
- Developer Tools
created: '2026-07-11'
modified: '2026-07-11'
specificationVersion: '0.23'
apis:
- aid: percy:percy-builds-api
  name: Percy Builds API
  description: A build logically groups the test sessions and snapshots of a run.
  humanURL: https://www.browserstack.com/docs/percy/api-reference/builds
  baseURL: https://percy.io/api/v1
  tags:
  - Builds
  properties:
  - type: OpenAPI
    url: openapi/percy-builds-api-openapi.yml
  - type: Documentation
    url: https://www.browserstack.com/docs/percy/api-reference/percy-apis
  - type: APIReference
    url: https://www.browserstack.com/docs/percy/api-reference/builds
  - type: PostmanCollection
    url: collections/percy.postman_collection.json
  - type: OpenCollection
    url: collections/percy.opencollection.json
  - type: APIReference
    url: https://www.browserstack.com/docs/percy/api-reference/snapshots
  - type: APIReference
    url: https://www.browserstack.com/docs/percy/api-reference/projects
  - type: APIReference
    url: https://www.browserstack.com/docs/percy/api-reference/visual-git
- aid: percy:percy-projects-api
  name: Percy Projects API
  description: A project logically groups builds on Percy.
  humanURL: https://www.browserstack.com/docs/percy/api-reference/builds
  baseURL: https://percy.io/api/v1
  tags:
  - Project
  tags_raw:
  - Projects
  properties:
  - type: OpenAPI
    url: openapi/percy-projects-api-openapi.yml
  - type: Documentation
    url: https://www.browserstack.com/docs/percy/api-reference/percy-apis
  - type: APIReference
    url: https://www.browserstack.com/docs/percy/api-reference/builds
  - type: PostmanCollection
    url: collections/percy.postman_collection.json
  - type: OpenCollection
    url: collections/percy.opencollection.json
  - type: APIReference
    url: https://www.browserstack.com/docs/percy/api-reference/snapshots
  - type: APIReference
    url: https://www.browserstack.com/docs/percy/api-reference/projects
  - type: APIReference
    url: https://www.browserstack.com/docs/percy/api-reference/visual-git
- aid: percy:percy-snapshots-api
  name: Percy Snapshots API
  description: Snapshots are the individual visual comparisons within a build.
  humanURL: https://www.browserstack.com/docs/percy/api-reference/builds
  baseURL: https://percy.io/api/v1
  tags:
  - Snapshots
  properties:
  - type: OpenAPI
    url: openapi/percy-snapshots-api-openapi.yml
  - type: Documentation
    url: https://www.browserstack.com/docs/percy/api-reference/percy-apis
  - type: APIReference
    url: https://www.browserstack.com/docs/percy/api-reference/builds
  - type: PostmanCollection
    url: collections/percy.postman_collection.json
  - type: OpenCollection
    url: collections/percy.opencollection.json
  - type: APIReference
    url: https://www.browserstack.com/docs/percy/api-reference/snapshots
  - type: APIReference
    url: https://www.browserstack.com/docs/percy/api-reference/projects
  - type: APIReference
    url: https://www.browserstack.com/docs/percy/api-reference/visual-git
- aid: percy:percy-visual-git-api
  name: Percy Visual Git API
  description: Branchline sync and merge of approved snapshots across branch lines.
  humanURL: https://www.browserstack.com/docs/percy/api-reference/builds
  baseURL: https://percy.io/api/v1
  tags:
  - Visual Git
  properties:
  - type: OpenAPI
    url: openapi/percy-visual-git-api-openapi.yml
  - type: Documentation
    url: https://www.browserstack.com/docs/percy/api-reference/percy-apis
  - type: APIReference
    url: https://www.browserstack.com/docs/percy/api-reference/builds
  - type: PostmanCollection
    url: collections/percy.postman_collection.json
  - type: OpenCollection
    url: collections/percy.opencollection.json
  - type: APIReference
    url: https://www.browserstack.com/docs/percy/api-reference/snapshots
  - type: APIReference
    url: https://www.browserstack.com/docs/percy/api-reference/projects
  - type: APIReference
    url: https://www.browserstack.com/docs/percy/api-reference/visual-git
common:
- type: CapabilityMap
  url: capabilities/percy-capability-edges.yml
  name: Percy Business Capability Map
- type: AgenticAccess
  url: agentic-access/percy-agentic-access.yml
- type: Authentication
  url: authentication/percy-authentication.yml
- type: GitHubOrganization
  url: https://github.com/percy
- type: LinkedIn
  url: https://www.linkedin.com/company/browserstack
- type: Website
  url: https://percy.io
- type: Documentation
  url: https://www.browserstack.com/docs/percy
- type: Plans
  url: plans/percy-plans-pricing.yml
- type: RateLimits
  url: rate-limits/percy-rate-limits.yml
- type: FinOps
  url: finops/percy-finops.yml
- url: https://percy.io/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Percy API — frequently asked questions

Does Percy have an API?

Yes. APIs.io lists 4 APIs from Percy, including Percy Builds API, Percy Projects API and Percy Snapshots API, and 1 more.

Is there an OpenAPI specification for the Percy API?

Yes. APIs.io indexes 4 OpenAPI specifications for Percy, each linked for download from this page.

How do I authenticate with the Percy API?

Percy uses bearer-token authentication (apiKey/http · 2 schemes). The details are profiled on APIs.io as Percy Authentication.

How much does the Percy API cost?

APIs.io lists 3 pricing plans for Percy, with each plan's price, limits and inclusions under Pricing on this page.

Is the Percy API ready for AI agents?

Percy has a Kin Score of 28.3 out of 100 (thin) and an Agent Readiness score of 19.0 (agent-aware), scored by API Evangelist on 2026-11-06.

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/percy"

All providers

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

Every operation they expose

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

How their score was established

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

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

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.