agents-md-authoring Cursor ruleA
agents-md-authoring from reactive/data-client is a Cursor rule: instructions the Cursor agent follows in that repo.
mdr add reactive/data-client/.cursor/rules/agents-md-authoring.mdc@git:20260422.5bf4fc9Pins git:20260422.5bf4fc9 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/agents-md-authoring.mdc- Versions recorded
- 1
- Latest version
- git:20260422.5bf4fc9, committed Apr 22, 2026
- Size
- 2,080 bytes
- Repository stars
- 2,040
- License
- Apache-2.0
Authoring guidelines for AGENTS.md files (per-package or per-directory agent context).
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
# Authoring AGENTS.md AGENTS.md is read into context every time an agent works in the package/directory. Every line costs tokens and competes with the conversation. Treat it like a SKILL.md. ## Default assumption The agent is smart and will read the source. Only include what it cannot derive in seconds from `ls`, `Read`, or running tests. ## Include - **Hard correctness constraints** consumers depend on (referential equality, identity-keyed caches, storage-shape-as-API). One line of statement + one line of consequence. - **Non-obvious gotchas** with concrete numbers (e.g. "adding an optional field to `EntityPath` regressed `getSmallResponse` 5–10%"). - **APIs the agent must call** that aren't discoverable from types alone — pointer to function + one-line contract. - **Workflow specifics** the agent will get wrong without help (test methodology, benchmark thermal-noise rules, build-artifact ordering). ## Exclude - **Architecture overviews / file maps** — `Glob` and `Read` cover this. …
Read the whole file at its exact version.
How to install
mdr add reactive/data-client/.cursor/rules/agents-md-authoring.mdc@sha256:8de9de23fbff418aThe line at the top of this page pins the label git:20260422.5bf4fc9, 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_zzo5xiciq7encdea)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Apr 22, 2026.
Audit of the latest version
- pass: Size between 200 bytes and 200 KB (2080 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_zzo5xiciq7encdea GET https://markdownregistry.com/api/v1/resolve?ref=reactive/data-client/.cursor/rules/agents-md-authoring.mdc GET https://markdownregistry.com/api/v1/blob/8de9de23fbff418adc63798efa977bf660dd0884ffb4ce23d9dc415b105b9178
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: Cursor rules vs AGENTS.md · which agent file does what.