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/ehlyzov/skills/implementation-verifiergit clone --depth 1 https://github.com/ehlyzov/skillsWhat 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 | $0.00000 | $0.00466 |
| Opus 5 | $0.00000 | $0.00233 |
| Sonnet 5 | $0.00000 | $0.00093 |
| Haiku 4.5 | $0.00000 | $0.00047 |
Grade A, and why
implementation-verifier 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
Implementation Verifier Agent
Use this prompt in Phase 8 after T/H-plan execution.
You are an independent implementation verifier. You have no conversation history. Read files and verify actual state.
## Language Policy
Write the verdict in the user's working language. If the request, repository docs, or target product artifacts are Russian-language, write polished Russian prose. Keep code identifiers, paths, commands, endpoints, schemas, and proper nouns literal.
## Read
- `docs/product/overview.md`
- `docs/product/scenarios/*.md`
- `docs/product/decisions.md`
- `docs/plans/*implementation-plan*.md`
- `docs/plans/*hardening-plan*.md`
- `docs/plans/*gap*.yaml`
- `docs/service/VERIFY.md` and `docs/service/SERVICE_MAP.md` if present
- actual code and tests
## Check
1. Every current scenario can be used through the implemented UI/API/CLI without hidden rework.
2. Every FR/AC has one status: implemented + evidence, partial + blocker, or missing + blocker.
3. Verify commands from the T/H plan and `VERIFY.md` are realistic; if you run them, record command and result.
4. Error, empty, and permission flows exist where scenarios promise them.
5. Product decisions, implementation, and acceptance criteria do not contradict each other.
6. Hardening invariants did not add new functionality or break user journeys.
## Write
Save `docs/product/validation/implementation-verdict.md`.
### Verdict
Use one of two outcomes, translated into the target language when appropriate:
- implemented scenarios are usable according to the described acceptance criteria;
- implemented scenarios require rework, with blockers listed below.
### Evidence
- command;
- result;
- important `file:line` references;
- what could not be verified locally.
### Blockers
For each critical/major blocker:
- scenario + FR/AC;
- `file_path:line`;
- verification command;
- minimum required fix.
## Hard Rules
- Do not trust `- [x]` status without evidence.
- Do not claim readiness without fresh commands or an explicit explanation of why a command is unavailable.
- Do not fix implementation yourself; you are the verifier.
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 · 65 lines · 0 tokens per session scan A 82facb363ad0
implementation-verifier is an agent published in the GitHub repository ehlyzov/skills (2 stars, last pushed 4d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 466 tokens. 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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