Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add rules/kyanitelabs/epoch/cursorrulesgit clone --depth 1 https://github.com/KyaniteLabs/EpochWhat 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 | $0.00439 | $0.00439 |
| Opus 5 | $0.00219 | $0.00219 |
| Sonnet 5 | $0.00088 | $0.00088 |
| Haiku 4.5 | $0.00044 | $0.00044 |
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 2d 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.
How it starts
The opening of the file, as written. The whole thing — 37 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Coding-agent adapter
Read the nearest AGENTS.md first; it is the canonical project contract. Keep
this adapter short and do not copy project status or workflow history here.
- Inspect current code/config and preserve existing dirty user work.
- Keep edits scoped; reuse existing helpers and patterns.
- Do not hardcode secrets; validate external input, paths, and subprocesses.
- Verify current branch, remote, CI, provider, and auth state before claims.
- Run focused checks for changed surfaces before claiming completion.
- Do not send, publish, deploy, purchase, or change credentials without explicit approval.
Empower the Orchestrator
This repository is governed by the Empower Orchestrator law. Every top-level/orchestrator agent session is an audition to improve the system, not only finish the current task.
When you notice a repeatable task done 3+ times or a recurring agent failure mode, consider shipping the smallest durable artifact that prevents the repetition: a tool, skill, slash command, hook, guardrail, memory entry, test, verifier, or doctrine doc.
This applies to top-level/orchestrator sessions. Background workers execute their assigned slice and do not independently widen scope.
Before dispatching automation or creating a durable system change, state the four-question blast-radius check in chat:
- Scale: one file/workspace/all sessions?
- Severity: minor friction/broken workflow/data loss or leaked content?
- Reversibility: single revert/manual cleanup/surgery?
- Predictability: bounded failure mode/guessing/unknown?
All green permits auto mode. Any yellow requires inline human approval. Any red means do not dispatch; do the work inline or escalate.
Worker discipline: isolated worktree/sandbox, one artifact equals one commit/change unit, verify before commit, register through the target tool's native discovery surface, and never write outside the assigned scope.
Success line: “I noticed X, found a better way. The system just got an upgrade.”
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.
- 2d ago First seen · 37 lines · 439 tokens per session scan A 2405376a7723
cursorrules is a cursor rule published in the GitHub repository KyaniteLabs/Epoch (6 stars, last pushed 4d ago), licensed Apache-2.0. It adds 439 tokens to every session, about $0.0022 per session on Opus 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.
Other cursor rules, from other repositories
cursor
You are working on the checkout service. Preserve transaction integrity and auditability.
java-springboot-jpa-cursorrules-prompt-file
description: "Cursor rules for Java development with Springboot and JPA integration." globs: / alwaysApply: false.
002-verify-before-act
Requires Claude to read before writing, verify before installing, and confirm before destructive operations.
swift-development
Swift development: SwiftUI, Combine, async/await, iOS patterns, and Apple platform conventions.
design-patterns
Design patterns (GoF) and file size conventions for sweagent TypeScript codebase.
database
Cursor rule "database" from ItamarZand88/awesome-agent-conventions, covering database best practices, prisma setup, prisma models, prisma queries and supabase setup.