Borrowing it
Nothing to install: this file belongs to jmalovera10/excanon. 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/jmalovera10/excanon/main/AGENTS.mdgit clone --depth 1 https://github.com/jmalovera10/excanonWrote 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/jmalovera10/excanon/agents-md)<a href="https://agentmods.dev/instructions/jmalovera10/excanon/agents-md"><img src="https://agentmods.dev/badge/instructions/jmalovera10/excanon/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/jmalovera10/excanon/agents-md"><img src="https://agentmods.dev/badge/instructions/jmalovera10/excanon/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 | $0.01497 | $0.01497 |
| Opus 5.5 | $0.00599 | $0.00599 |
| Sonnet 5.5 | $0.00299 | $0.00299 |
| Haiku 4.5 | $0.00150 | $0.00150 |
Grade A, and why
excanon 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 today.
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 — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Rules for every AI agent working on excanon, whatever tool runs it. Role definitions, skills and workflows live in .agents/. Where they conflict with this file, this file wins.
The project
Excanon is an Elixir library, published on Hex, that evaluates JSON-defined business rules. People install it as a dependency, so its public API, its documented behavior and its error tuples are a contract with every app that uses it. .agents/policy/versioning.md defines that contract and how versions and deprecations work.
| Task | Command |
|---|---|
| Install deps | mix deps.get |
| Compile (warnings fail) | mix compile --warnings-as-errors |
| Test | mix test |
| Coverage | mix test --cover |
| Format check | mix format --check-formatted |
| Lint | mix credo --strict |
| Types | mix dialyzer |
| Security scan | mix sobelow --skip |
CI (.github/workflows/ci-workflow.yml) runs compile, test and dialyzer across the Elixir/OTP matrix, plus a quality job for format, credo, sobelow and the 90% coverage threshold. Run them locally before pushing.
Who decides
The maintainer, @jmalovera10, is the only human authority. These decisions belong to the maintainer alone, and agents prepare them but never take them:
- Which work is prioritized.
- Any change classified high impact by
.agents/policy/impact.md, approved before building starts. - Approving and merging pull requests.
- Creating versions, tagging, and publishing to Hex.
- Filing, requesting a CVE for, and publishing security advisories.
Agents never merge, push to main, tag, publish, change repository settings, or read, write or print secrets. A task that seems to need one of these stops and asks the maintainer.
Runs started by the maintainer proceed without asking, except at the gates above. Runs started by anyone else wait for the maintainer's approval before they start.
Trust boundaries
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.
- today First seen · 98 lines · 1,497 tokens per session scan A ecc062b1f6fb
excanon AGENTS.md is an instructions file published in the GitHub repository jmalovera10/excanon (5 stars, last pushed 6d ago), licensed MIT. It adds 1,497 tokens to every session, about $0.0060 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 2026-11-07.
excanon AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| excanon AGENTS.mdjmalovera10/excanon | Instructions file | 5 | 6d ago | MIT | A | 1,497 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,516 | GitHub Copilot |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 275k | 3d ago | MIT | A | 4,313 | Codex, OpenCode |