agent-browser-docs Cursor ruleA
agent-browser-docs from reactive/data-client is a Cursor rule: instructions the Cursor agent follows in that repo.
mdr add reactive/data-client/.cursor/rules/agent-browser-docs.mdc@git:20261021.bb0dda6Pins git:20261021.bb0dda6 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 14 of 14 checks passed
- Kind
- Cursor rule
- Repository
- reactive/data-client
- Path
.cursor/rules/agent-browser-docs.mdc- Versions recorded
- 1
- Latest version
- git:20261021.bb0dda6, committed Oct 21, 2026
- Size
- 4,046 bytes
- Repository stars
- 2,040
- License
- Apache-2.0
Constraints for the agent browser-debugging docs (devtools-debugging snippets and per-tool browser setup pages).
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Agent browser-debugging docs
## Layout
- `docs/core/_agents/devtools-debugging.md` is the core: every snippet, the ways a tool can run one (Browser Tools, whose table is the only list of each tool's runner, way and readers), and fallbacks for tools without request or console readers. Each `browser-<tool>.md` is a thin adapter: install, open the page, which way it runs snippets, and quirks only that tool has. Anything a second tool could use goes in the core.
- A tool that fits none of the ways adds a `###` way to the core and a runner to `WAYS` in `checkBrowserSnippets.mjs`.
- Adding, renaming or dropping a tool touches: the Browser Tools table, the agent table in `browser-cursor.md` (Cursor only), the Status table below, the tool names on `getting-started/debugging.md`, `getting-started/agent-skills.md` and `api/DevToolsManager.md`, and both skills' `references.json` plus the reference line in their `SKILL.md`.
## Snippet contract
Every snippet has to work in every way, so each one:
- Is a function expression (`() => {}` or `async () => {}`), never an IIFE: Function tools call what they're given, and the expression ways have the agent wrap it as `(<snippet>)()`.
…Read the whole file at its exact version.
How to install
mdr add reactive/data-client/.cursor/rules/agent-browser-docs.mdc@sha256:ced8529489fa2009The line at the top of this page pins the label git:20261021.bb0dda6, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_a2vcd6i5svyps427)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 21, 2026.
Audit of the latest version
- pass: Size between 200 bytes and 200 KB (4046 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
reactive/data-client · 2,040 stars · license Apache-2.0 · pushed 2026-11-01 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_a2vcd6i5svyps427 GET https://markdownregistry.com/api/v1/resolve?ref=reactive/data-client/.cursor/rules/agent-browser-docs.mdc GET https://markdownregistry.com/api/v1/blob/ced8529489fa20093b423f2205a09bcaaca6d6494a668b65797dd91d525282b7
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Guides: Cursor rules vs AGENTS.md · which agent file does what.