Borrowing it
Nothing to install: this file belongs to clouatre-labs/aptu-coder. 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/clouatre-labs/aptu-coder/main/AGENTS.mdgit clone --depth 1 https://github.com/clouatre-labs/aptu-coderWrote 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/clouatre-labs/aptu-coder/agents-md)<a href="https://agentmods.dev/instructions/clouatre-labs/aptu-coder/agents-md"><img src="https://agentmods.dev/badge/instructions/clouatre-labs/aptu-coder/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/clouatre-labs/aptu-coder/agents-md"><img src="https://agentmods.dev/badge/instructions/clouatre-labs/aptu-coder/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 | $0.01338 | $0.01338 |
| Opus 5.5 | $0.00535 | $0.00535 |
| Sonnet 5.5 | $0.00268 | $0.00268 |
| Haiku 4.5 | $0.00134 | $0.00134 |
Grade A, and why
aptu-coder 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 7d 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 — 77 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Project structure
Rust workspace with two crates:
crates/aptu-coder-core-- parsing, analysis, formatting, graph, pagination, typescrates/aptu-coder-- MCP server, tool handlers, logging, metrics, MCP Resources surface (list_resources, list_resource_templates, read_resource in crates/aptu-coder/src/tools/resources.rs)
MCP tool surface and parameter schemas are documented by the tools themselves; do not duplicate them here. Tool handler logic lives in crates/aptu-coder/src/tools/<tool>.rs. Path validation lives in src/validation.rs; shell detection in src/shell.rs; exec output filtering (built-in rules, project-local .aptu/filters.toml, schema_version enforcement) in src/filters.rs. Read the relevant handler or module before touching those subsystems.
Rust edition 2024, async with tokio, latest MCP protocol via rmcp. Supported languages are listed in crates/aptu-coder-core/src/lang.rs.
All CI jobs run on ubuntu-26.04-arm (ARM64).
Commands
cargo build
cargo test
cargo clippy -- -D warnings
cargo fmt --check
cargo deny check advisories licenses
cargo bench
cargo install --path crates/aptu-coder --profile release # local install; binary lands in ~/.cargo/bin/
Workspace lints enforced in CI (deny): undocumented_unsafe_blocks, unwrap_used, expect_used. Both unwrap_used and expect_used have test-code exemptions via cfg_attr in each crate's lib.rs. Dependency freshness: new Cargo.lock entries must be >=7 days old; bypass with SKIP_PACKAGE_AGE_CHECK=true.
API & compatibility policy
Do not rely on training data for rmcp, schemars, or thiserror APIs. crates/aptu-coder/src/lib.rs is shim-only (MCP wiring, #[tool(...)] decorators, thin forwarding calls); handler logic lives in crates/aptu-coder/src/tools/<tool>.rs.
Keep the parameter surface strict: the tool schema is the contract -- no legacy fields, no silently ignored inputs, no deprecation windows. Breaking changes ship directly (alpha software).
Do not reference host-specific tools, clients, or environment variables in tool descriptions or server instructions.
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.
- 7d ago Changed · +64 tokens per session f9d857ce278d
- 1mo ago Changed · +1 lines · +90 tokens per session e971528fccf8
- 1mo ago Changed · -13 lines · -588 tokens per session 7e2a199b5bbf
- 1mo ago First seen · 89 lines · 1,772 tokens per session scan A 0eb9e2d74a2c
aptu-coder AGENTS.md is an instructions file published in the GitHub repository clouatre-labs/aptu-coder (6 stars, last pushed 3d ago), licensed Apache-2.0. It adds 1,338 tokens to every session, about $0.0054 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.
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