Borrowing it
Nothing to install: this file belongs to prakrititz/relayBrain. 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/prakrititz/relayBrain/main/.cursorrulesgit clone --depth 1 https://github.com/prakrititz/relayBrainWrote 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/rules/prakrititz/relaybrain/cursorrules)<a href="https://agentmods.dev/rules/prakrititz/relaybrain/cursorrules"><img src="https://agentmods.dev/badge/rules/prakrititz/relaybrain/cursorrules/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/rules/prakrititz/relaybrain/cursorrules"><img src="https://agentmods.dev/badge/rules/prakrititz/relaybrain/cursorrules.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 | $0.00751 | $0.00751 |
| Opus 5.5 | $0.00300 | $0.00300 |
| Sonnet 5.5 | $0.00150 | $0.00150 |
| Haiku 4.5 | $0.00075 | $0.00075 |
Grade A, and why
cursorrules 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 yesterday.
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.
This is a copy
97% identical to relay — 16 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Relay (auto-installed)
This project uses Relay for cross-agent memory. Do not ask the user to configure agent files manually.
Every session — read first: .relay/AGENT_BOOTSTRAP.md
| Phase | Action |
|---|---|
| Session start | Read .relay/relay_context.md (handoff). Never paste raw transcripts. |
| After agent work | You update .relay/*.md from compile_brief.md (stop hook triggers this) |
| Background sync | relay watch . keeps memory.json + compile_brief.md fresh |
| Not installed? | Run relay add . or relay init in project root |
Stop hooks: Cursor, Claude Code, Codex, Copilot CLI, Antigravity — installed by relay add / relay init.
Relay MCP: relay_room_brief, locks, chat history — installed into each agent's MCP config by relay add.
Shared memory graph (Relay MCP)
- Before editing files you have not touched in this session, call
relay_session_briefwith their paths. It tells you who is editing them right now and why, past collisions, decisions, and the prompts behind recent changes from every agent and teammate. Respect what it says. - When you make an architectural or design decision, call
relay_report_decisionwithdecisionand thefilesit affects. - When a claim is denied, the reason says what the holder is working on. Pick other work, or ask the user.
- To explain why code looks the way it does, call
relay_graph_querywithquery: "file_story"and thepath.
Relay pseudo-commands (user chat)
These are not built-in slash commands. They are a project convention — phrases the user types so agents recognize Relay intent.
When the user sends any of these phrases (with or without a leading /), treat them as Relay instructions — not casual chat:
| User says | You do |
|---|---|
/relay update or relay update |
relay sync . → relay compile . → read .relay/compile_brief.md → update .relay/project.md, current_task.md, decisions.md, failures.md → relay context . → confirm "Relay updated." |
/relay context or relay context |
Read .relay/relay_context.md (run relay context . first if stale). Summarize handoff briefly. |
/relay ask or relay ask |
Call Relay MCP tool relay_room_brief (MCP server relay). Required on Cursor, Claude Code, Codex, Copilot CLI, and Antigravity — not a terminal command for the human. Summarize teammate chat, code edits, locks, and file-sync notes. Tell the user before you edit shared files. If relay MCP is missing, say so and suggest relay add . + agent restart (do not ask the user to run relay ask). |
/relay init or relay init |
Run relay init in project root if .relay/ missing; else confirm already installed. |
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.
- yesterday Changed · +17 lines · +153 tokens per session ee47ba02060c
- 1mo ago First seen · 37 lines · 598 tokens per session scan A 9b0701ca2e16
cursorrules is a cursor rule published in the GitHub repository prakrititz/relayBrain (33 stars, last pushed yesterday), licensed MIT. It adds 751 tokens to every session, about $0.0030 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 97% identical to relay, differing in 16 lines, and is treated as a copy.
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