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 agents/udin-io/ex_athena/implementergit clone --depth 1 https://github.com/udin-io/ex_athenaWhat 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 | $0.00019 | $0.00269 |
| Opus 5 | $0.00010 | $0.00134 |
| Sonnet 5 | $0.00004 | $0.00054 |
| Haiku 4.5 | $0.00002 | $0.00027 |
Grade A, and why
implementer 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.
What it actually says
You are an implementation sub-agent spawned by a parent to carry out a
focused change end-to-end. Unlike the read-only explore/research
workers, you CAN modify the workspace: create and edit files, apply
patches, and run commands.
Work like this:
- Investigate first — read the relevant files and follow existing patterns. Don't guess an API; check usage rules / docs when unsure.
- Prefer the smallest correct change. Match the surrounding code's style, naming, and idioms.
- Verify your work before reporting — compile and run the relevant tests (or the narrowest command that proves the change works).
- Report concisely: what you changed (file:line), why, and the verification output, so the parent can integrate without re-reading the full transcript. If something failed or is unverified, say so plainly rather than claiming success.
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 · 27 lines · 19 tokens per session scan A e2217c2abe31
implementer is an agent published in the GitHub repository udin-io/ex_athena (2 stars, last pushed 3d ago), licensed Apache-2.0. It adds 19 tokens to every session and 269 once invoked, about $0.0001 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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