# Percy

**Canonical:** https://apis.io/providers/percy/  
**Website:** https://percy.io  
**APIs profiled:** 4

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.

## Kin Score — 39.1 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 39.1).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 58.4 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 34.2 |
| Developer Ergonomics | 23.8 |
| Commercial Clarity | 39.5 |
| Access Clarity | 39.5 |

## Agent readiness — 29.1 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (4)

- **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.

## Agentic access (1)

- **Percy Agentic Access** — 13 operations · 7 acting

## Security (1)

- **Percy Authentication** — apiKey/http · 2 schemes

## Plans (1)

- **Percy Plans Pricing**

## Tags

Visual Testing, Visual Regression, Screenshots, QA, Testing, CI/CD, BrowserStack

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/percy/). Scores are computed from the provider's own public artifacts under a published rubric.