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/waldekmastykarz/atifact/agents-mdgit clone --depth 1 https://github.com/waldekmastykarz/atifactWrote 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/waldekmastykarz/atifact/agents-md)<a href="https://agentmods.dev/instructions/waldekmastykarz/atifact/agents-md"><img src="https://agentmods.dev/badge/instructions/waldekmastykarz/atifact/agents-md.svg" alt="Measured on agentmods" 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 | $0.00270 | $0.00270 |
| Opus 5 | $0.00135 | $0.00135 |
| Sonnet 5 | $0.00054 | $0.00054 |
| Haiku 4.5 | $0.00027 | $0.00027 |
Grade A, and why
atifact 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 5d 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.
What it actually says
Agents
ATIF spec version
The canonical source for the current ATIF spec version is the RFC on GitHub:
https://github.com/harbor-framework/harbor/blob/main/rfcs/0001-trajectory-format.md
Do NOT use the Harbor docs website (harborframework.com/docs/agents/trajectory-format) for version checks — it lags behind the RFC and may show an outdated version.
When updating the ATIF version referenced in this project, update all occurrences across source, tests, and docs:
README.md— version mentions and linkssrc/types.ts— commentsrc/index.ts— help textsrc/parsers/har.ts—schema_versionfieldsrc/parsers/claude-code.ts—schema_versionfieldsrc/parsers/copilot-cli.ts—schema_versionfieldsrc/parsers/codex-cli.ts—schema_versionfieldtest/har.test.ts— assertionstest/cli.test.ts— assertionstest/claude-code.test.ts— assertionstest/copilot-cli.test.ts— assertionstest/codex-cli.test.ts— assertions
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.
- 5d ago First seen · 25 lines · 270 tokens per session scan A e0add59412e0
atifact AGENTS.md is an instructions file published in the GitHub repository waldekmastykarz/atifact (5 stars, last pushed 12d ago), licensed MIT. It adds 270 tokens to every session, about $0.0014 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.
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