Percy

Percy MCP Connector for Claude

A+

Execute visual regression tests via Percy — track visual diffs natively, inspect snapshot limits, approve builds, and verify UI components using AI.

10 tools Official Updated Jun 28, 2026 Official Vinkius Partner

Inject precision quality assurance workflows directly bounding LLM models via the Percy Visual Testing API (by BrowserStack). Programmatically verify pixel regressions executing queries evaluating visual boundaries natively across target projects. Inspect deep status arrays parsing CI build limits dynamically, extract metrics evaluating granular snapshot checkpoints asynchronously, and force immediate test baseline approvals seamlessly directly from explicit prompt commands naturally.

What you can do

  • Project Navigation — Read bounded parameters tracking Percy deployments isolating configurations determining explicitly specific active QA targets natively
  • Automated Build Oversight — Track specific arrays extracting dynamic checks returning pipeline checkpoints (approved/failed/unreviewed limits) explicitly seamlessly
  • Visual Snapshot Operations — Log natively extracting bounds verifying comparison properties logging rendering differences mapping exact explicit width constraints
  • Baseline Affirmations — Mutate bounding loops forcing active execution of JSON logic structurally bypassing native clicks allowing test approvals implicitly (approve_build or approve_snapshot)

How it works

  1. Enable the structural node mapping target locally inside your logic constraints securely
  2. Incorporate explicitly bounds adding your single Percy Project Token statically internally gracefully
  3. Engage conversational agents dynamically explicitly retrieving UI test results bounding seamlessly

Who is this for?

  • QA & Testing Engineers — extract specific arrays parsing failed assertions tracking structural rendering regressions safely returning granular boundaries immediately iteratively
  • Frontend Teams — resolve visual bounds logging pipeline limits running explicitly without traversing complex dashboards isolating errors easily intelligently natively
  • DevOps Admins — verify explicit pipeline health tracking CI loop states explicitly monitoring unreviewed elements globally reliably securely
visual-regressionui-testingautomated-testingquality-assurancesnapshot-testingci-cd-integration

10 tools expose this connector's capabilities to your AI agent.

list_projects

List all projects on Percy (BrowserStack). Percy is the leading visual regression testing platform that captures snapshots and detects pixel-level UI differences across builds. Uses JSON:API format. Returns project names, slugs, and browser configs

get_project_details

Get full details of a Percy project including name, slug, default branch, auto-approve enabled, browser targets, and build count

list_builds

List builds for a Percy project. Each build contains snapshots from a test run. Returns build IDs, states (processing/finished/failed), branch names, commit SHAs, and snapshot counts

get_build_details

Get full details of a Percy build including state, total/unreviewed snapshot counts, approved/rejected snapshots, branch, commit SHA, and finalized timestamp

approve_build

/approve` moving the test suite to green. Approve all unreviewed snapshots in a Percy build. Marks the entire build as visually approved for deployment

list_snapshots

List snapshots in a Percy build. Each snapshot is a captured page/component at specific widths and browsers. Returns snapshot names, review states (unreviewed/approved/rejected), and diff percentages

get_snapshot_details

Get full details of a Percy snapshot including name, review state, widths, fingerprint, and comparison count

approve_snapshot

Approve a single Percy snapshot. Marks it as visually correct, updating the baseline for future comparisons

list_comparisons

List visual comparisons for a Percy snapshot. Each comparison shows the diff between baseline and head at a specific width/browser. Returns diff images, diff percentages, and browser info

list_browsers

List all supported browser families on Percy. Returns browser names, versions, and OS combinations for cross-browser visual testing

See how to talk to your AI agent using Percy.

Log explicitly the builds targeting structural limits seamlessly isolating project 'org-slug/my-app' dynamically checking bounding states natively.

Queried structured native limits logically hitting endpoints gracefully globally. Validated boundaries tracking 3 explicit recent builds logically seamlessly natively. Top bound is Build ID 9091x running structurally 'unreviewed' accurately completely actively globally.

Reverse check explicit structures extracting limits comparing properties cleanly bounding snapshot ID 'snap_778' natively efficiently.

Mapped explicit target bounds successfully routing API queries globally resolving gracefully testing results gracefully efficiently. Captured snapshot limits natively show structural bounds identifying a 3.2% exact diff regression rendering gracefully explicitly locally tracking arrays.

Force explicit validation mutating boundaries executing structurally an approval across build ID '8910' automatically natively flawlessly securely.

Dispatched JSON gracefully natively mutating endpoint execution safely actively explicitly properly mapping target specifications limits. Build '8910' structurally updated effectively generating bounding approval. Pipeline logic seamlessly gracefully confirmed natively securely correctly completely logically active.

Absolutely strictly explicitly natively. The integration encapsulates the `approve_build` action dynamically structurally executing the final endpoint verification marking bounds explicitly matching visual approvals effortlessly saving limits.

Related Connectors