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 instructions/alchemiststudiosdotai/tunacode/agents-mdgit clone --depth 1 https://github.com/alchemiststudiosDOTai/tunacodeWhat 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 | $0.01938 | $0.01938 |
| Opus 5 | $0.00969 | $0.00969 |
| Sonnet 5 | $0.00388 | $0.00388 |
| Haiku 4.5 | $0.00194 | $0.00194 |
Grade A, and why
tunacode 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 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 — 132 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Last Updated: 2026-07-10
Repository Orientation
- This is
tunacode-cli, a terminal AI coding agent with a Textual UI and tiny-agent tool loop. - Primary source package:
src/tunacode/. - Python requirement: 3.11+ (
pyproject.toml). - We use UV and .venv
Start Here
docs/modules/index.md— module layer map and reading order.docs/architecture/dependencies/DEPENDENCY_LAYERS.md— generated dependency summary.docs/skills/audit-harness/SKILL.md— strict harness-audit procedure; treat any mismatch or failed gate as critical and run checks manually one by one.docs/modules/ui/commands.md— command model and command registration notes.docs/workflows/README.md— accepted development workflows and execution guidance.scripts/check_agents_freshness.py— validates this file is current.
Harness Documentation Purpose
HARNESS.mddocuments the code-quality harness for this repository.- It captures pre-commit, pre-push, repository rules, and CI/CD checks in one place.
- The goal is to balance developer speed with reliability when programming with code agents.
- Use it as the operational checklist for what runs locally vs what is enforced in CI.
Git Safety and Non-Destructive Defaults
- Follow
docs/git/practices.mdfor local Git workflow and safety rules. - Use
docs/git/changelog-update.mdwhen the task is to refreshCHANGELOG.mdfrom recently merged PRs. - Before performing any Git operation (
git status,git add,git commit, etc.), readdocs/git/practices.mdin that session. - Default behavior is non-destructive: never delete or clean untracked files/directories unless explicitly requested by the user.
- If unknown files appear during checks, pause and ask before cleanup.
- During commit-time check failures, do not make architectural/refactor decisions to force a green commit; only apply trivial lint-only fixes, otherwise stop and ask for user instruction.
Top-Level Layout
src/tunacode/— application code.tests/— unit and architecture tests.docs/— module documentation and architecture artifacts.scripts/— local tooling and validation scripts..github/workflows/— CI gates and release workflows.Makefile— developer-facing command shortcuts.pyproject.toml— package metadata, deps, lint/type/security settings.
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 · 132 lines · 1,938 tokens per session scan A 7595255e911b
tunacode AGENTS.md is an instructions file published in the GitHub repository alchemiststudiosDOTai/tunacode (124 stars, last pushed 1mo ago), licensed MIT. It adds 1,938 tokens to every session, about $0.0097 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 2026-08-30.
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