CockroachDB Plugin for Cursor connects the Cursor coding agent to CockroachDB clusters for database work such as exploring schemas, writing SQL, debugging queries, and managing distributed clusters. It supports self-hosted and CockroachDB Cloud connections, and its catalogue add-ons provide database-focused agents, skills, rules, and instructions.
Borrowing it
Nothing to install: this file belongs to cockroachdb/cursor-plugin. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/cockroachdb/cursor-plugin/main/AGENTS.mdgit clone --depth 1 https://github.com/cockroachdb/cursor-pluginWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/cockroachdb/cursor-plugin/agents-md)<a href="https://agentmods.dev/instructions/cockroachdb/cursor-plugin/agents-md"><img src="https://agentmods.dev/badge/instructions/cockroachdb/cursor-plugin/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/cockroachdb/cursor-plugin/agents-md"><img src="https://agentmods.dev/badge/instructions/cockroachdb/cursor-plugin/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00466 | $0.00466 |
| Opus 5.5 | $0.00186 | $0.00186 |
| Sonnet 5.5 | $0.00093 | $0.00093 |
| Haiku 4.5 | $0.00047 | $0.00047 |
Grade A, and why
cursor-plugin AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 28d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Agent instructions for cursor-plugin
Guidance for AI coding assistants (and new contributors) working in this repo. It complements CONTRIBUTING.md.
What this repo is
The CockroachDB plugin for Cursor: MCP backends (mcp.json + tools.yaml), best-practice rules (rules/*.mdc), and skills (skills/).
Rules that prevent breakage
- This plugin has no hooks. Cursor does not run the PreToolUse/PostToolUse hook mechanism that the Claude Code plugin uses; safety and best-practice guidance ships as Cursor rules in
rules/. Never describe this plugin as having "safety hooks" (the description says "safety and best-practice rules" on purpose), and do not porthooks.jsonhere. - MCP config uses
${CURSOR_PLUGIN_ROOT}and${VAR:-default}. Cursor starts plugin servers in the user's home directory, sotools.yamlmust be referenced as${CURSOR_PLUGIN_ROOT}/tools.yaml. An unset bare${VAR}reaches the server as literal text and${env:VAR}as an empty string, and Toolbox uses either one as the value (issue cockroachdb/claude-plugin#27). Declare each referenced variable undervariablesin.cursor-plugin/plugin.json. - Never edit
skills/by hand. Skills are synced from the cockroachdb-skills submodule by a weekly workflow that also regenerates theskillsarray in.cursor-plugin/plugin.json. Contribute skills upstream instead. - Never bump versions by hand. Release Please owns
versionin.cursor-plugin/plugin.json,.release-please-manifest.json, andCHANGELOG.md. Conventional commits:fix:/feat:cut a release,chore:/docs:do not. - No counts in descriptions. Do not write "three agents" or "N skills" anywhere; counts go stale. Name the things instead.
Writing style
Commit messages and PR bodies in a plain human voice: conventional-commit prefixes, no AI attribution trailers, plain punctuation.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 28d ago Changed · +1 lines · +106 tokens per session b97a1e702a93
- 2mo ago First seen · 19 lines · 360 tokens per session scan A 3b0d95bd2d02
cursor-plugin AGENTS.md is an instructions file published in the GitHub repository cockroachdb/cursor-plugin (2 stars, last pushed 28d ago), licensed Apache-2.0. It adds 466 tokens to every session, about $0.0019 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
cursor-plugin AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| cursor-plugin AGENTS.mdcockroachdb/cursor-plugin | Instructions file | 2 | 28d ago | Apache-2.0 | A | 466 | Claude Code, Codex, OpenCode |
| data-scientist copilot-instructions.mdrealnghon/data-scientist | Instructions file | 2 | 4mo ago | MIT | A | 373 | GitHub Copilot |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |