Percy website screenshot

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 APIs 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.

Percy’s developer surface includes authentication, documentation, engineering blog, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub
24.9/100 emerging ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
AccessFreemiumSelf serve⚡ Free to try
1 APIs
Visual TestingVisual RegressionScreenshotsQATestingCI/CDBrowserStack

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 24.9/100 · emerging
Contract Quality 0.0 / 23
Developer Ergonomics 5.8 / 18
Access Clarity 7.1 / 18
Operational Transparency 4.0 / 12
Contract Governance 0.0 / 11
Discoverability 6.2 / 9
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 20/100 · 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
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.
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/percy: 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 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 6

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

API Collection

OPEN COLLECTION

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

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

FinOps 1

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

Percy Finops

FINOPS

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

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
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
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
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  generated: '2026-09-03'
  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
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: 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

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