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reactor-devtools Skill

AI Agent SkillC#Open source

Driving a running Reactor app via mur devtools — screenshot, inspect visual tree, click/type/scroll, read hook state. Use when diagnosing visible bugs (layout, contrast) or verifying a UI change landed. Published by microsoft in microsoft-ui-reactor.

Decision snapshot

Is this a fit?

Best for

Security review, Design and media, Includes SKILL.md, Reusable instructions

Works with

Compatibility not yet detected.

Access

API key required authentication, Credentials required

Setup

Copy skill directory

Project health

2 months ago · MIT license

Considerations

Access note: API key required.

What is reactor-devtools Skill?

Driving a running Reactor app via mur devtools — screenshot, inspect visual tree, click/type/scroll, read hook state. Use when diagnosing visible bugs (layout, contrast) or verifying a UI change landed. Published by microsoft in microsoft-ui-reactor. This profile combines repository metadata with install, compatibility, and usage signals so developers can quickly decide whether it fits their agent workflow before opening the source repository.

Trust signal
95/100
Maintenance signal
90/100
Adoption signal
68/100

Automated repository signals based on public metadata such as recency, license, installation evidence, and adoption. These are not a security audit or endorsement. See how SkillIndex evaluates profiles.

Key capabilities

  • Includes SKILL.md support
  • Reusable instructions support
  • Security review
  • Design and media
  • Security review use cases
  • Design and media use cases

Declared skill metadata

  • Source file: plugins/reactor/skills/reactor-devtools/SKILL.md

These fields retain source and confidence evidence from the indexed SKILL.md.

Compatibility and setup

Copy skill directory
  • Install or run with Copy skill directory
  • API key required

Requirements and access

API key required

Security and permissions

Review permissions before connecting any MCP server to an agent. Pay special attention to whether it can read local files, write data, call external services, or perform destructive actions.

Credentials requiredAPI key required authentication

When to use reactor-devtools Skill

  • Use it for security review.
  • Use it for design and media.

Built with

C#Copy skill directory

Editorial notes

Source

  • Creator: microsoft
  • Repository: microsoft/microsoft-ui-reactor
  • Skill file: plugins/reactor/skills/reactor-devtools/SKILL.md

What it does

Driving a running Reactor app via mur devtools — screenshot, inspect visual tree, click/type/scroll, read hook state. Use when diagnosing visible bugs (layout, contrast) or verifying a UI change landed.

Skill instructions

Reactor Devtools — CLI-driven UI automation The Reactor devtools let you look at a running debug-build app the way a user does (screenshots, rendered text, layout bounds) and drive it the way a user does (click, type, toggle, scroll). Always prefer the mur devtools CLI — every action composes with shell pipes and jq, each invocation is a complete audit record, and no MCP client setup is needed. Under the hood the CLI talks JSON-RPC to a loopback HTTP endpoint the app exposes. The MCP endpoint is still available at http://127.0.0.1:PORT/mcp as a parity escape hatch, but reach for it only when the CLI can't express what you need (structured args the CLI flattens, or another MCP client that's already wired up). Loopback-only — DEBUG builds only, never ship it. Auth is a per-launch bearer token written into the lockfile; the CLI applies it transparently during lockfile discovery, so you don't see it. Don't pass --endpoint for tool calls — without the token the server returns 401. --endpoin

Verified compatibility and discovery

Frequently asked questions

What is reactor-devtools?

reactor-devtools is a open-source AI agent skill with Copy skill directory. Driving a running Reactor app via mur devtools — screenshot, inspect visual tree, click/type/scroll, read hook state. Use when diagnosing visible bugs (layout, contrast) or verifying a UI change landed.

Who is reactor-devtools best for?

reactor-devtools is best for reusing agent instructions, scripts, and references, security review workflows, design and media workflows.

How do I install reactor-devtools?

Install or run reactor-devtools using Copy skill directory. Check reactor-devtools for the latest setup command.

Is reactor-devtools actively maintained?

reactor-devtools may need a closer maintenance check before production use.

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Stars
570
Forks
39
Last commit
2 months ago
Last verified
Aug 28, 2026
Metadata fetched
Aug 28, 2026
Repository age
5 months
License
MIT

Project health auto-fetched from the source repository.

Maintain this resource?

Review this source-backed profile, send a correction with evidence, or link to it from your documentation. Claims verify your relationship to the project; profile facts still require source evidence and editorial review.

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