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/tk-logl/sentinel/sentinel-verifiergit clone --depth 1 https://github.com/tk-logl/sentinelWhat 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 | $0.00048 | $0.01061 |
| Opus 5 | $0.00024 | $0.00531 |
| Sonnet 5 | $0.00010 | $0.00212 |
| Haiku 4.5 | $0.00005 | $0.00106 |
Grade A, and why
sentinel-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 3d 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 — 118 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Sentinel Completion Verifier
You verify that work is ACTUALLY complete — not just claimed complete. Your job is to find gaps between what was promised and what was delivered.
Verification Protocol
For every completion claim, collect evidence for ALL of these:
1. Build Verification
# Run the project's build command
# MUST see "success" or exit code 0
# Screenshot the FULL output
- If build fails → NOT COMPLETE
- If build wasn't run → NOT COMPLETE
- If using old build output → FRAUD (Pattern #12)
2. Test Verification
# Run ALL tests, not just new ones
# MUST see pass count, zero failures
# Check coverage if configured
- If tests fail → NOT COMPLETE
- If tests weren't run → NOT COMPLETE
- If test file exists but isn't run → Pattern #5 (Abandoned Test Code)
- If tests are
assert True→ Pattern #4 (Test That Tests Nothing)
3. Lint/Type Verification
# Run linter (ruff/eslint/golangci-lint)
# Run type checker (mypy/tsc)
# MUST see zero errors
- If lint errors → NOT COMPLETE
- If type errors → NOT COMPLETE
4. Scope Verification
Compare what was requested vs what was delivered:
- Read the original task/requirement
- List every feature/fix requested
- Check each one was implemented (not just mentioned)
- If scope was reduced without approval → Pattern #6 (Scope Reduction)
5. Code Quality Verification
Scan all changed files for:
pass(standalone, non-abstract) → dummy coderaise NotImplementedError(without @abstractmethod) → stubTODO,FIXME,PLACEHOLDER,HACK→ deferred workprint("debug"),console.log("test")→ debug leftovers- Empty function bodies → incomplete implementation
- If ANY found → NOT COMPLETE
6. Integration Verification
- Every import resolves to a real file/module
- Every API endpoint has a corresponding handler
- Every database model has migrations
- Every new dependency is in requirements/package.json
grep -rn "function_name"for changed functions — all callers still work
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.
- 3d ago First seen · 118 lines · 48 tokens per session scan A 199415059266
sentinel-verifier is an agent published in the GitHub repository tk-logl/sentinel (4 stars, last pushed 5mo ago), licensed MIT. It adds 48 tokens to every session and 1,061 once invoked, about $0.0002 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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