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 skills add 0xmariowu/builders-dont-cry --skill verification-before-completiongit clone --depth 1 https://github.com/0xmariowu/builders-dont-cryWrote 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/skills/0xmariowu/builders-dont-cry/verification-before-completion)<a href="https://agentmods.dev/skills/0xmariowu/builders-dont-cry/verification-before-completion"><img src="https://agentmods.dev/badge/skills/0xmariowu/builders-dont-cry/verification-before-completion/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/0xmariowu/builders-dont-cry/verification-before-completion"><img src="https://agentmods.dev/badge/skills/0xmariowu/builders-dont-cry/verification-before-completion.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00054 | $0.00527 |
| Opus 5 | $0.00027 | $0.00264 |
| Sonnet 5 | $0.00011 | $0.00105 |
| Haiku 4.5 | $0.00005 | $0.00053 |
Grade A, and why
verification-before-completion 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 10d 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 — 61 lines — stays where its author put it; the contents beside it link to each section on GitHub.
verification-before-completion
Do not claim completion without fresh verification evidence. Because: outside /execute, there is no step packet or checkbox gate to prove the work was actually checked.
Skip when already inside active /execute per-step execution. /execute has its own step packet, scope check, RED/GREEN evidence, verify, commit, and checkbox loop.
Trigger
Use this before saying:
DONE完成ready to pushfixed✅- "it works"
Only trigger when the same response does not already contain fresh verify output.
Required action
- Identify the relevant verify command.
- Run it.
- Report:
- command
- exit code
- last 5 lines
- Only then claim completion.
Evidence convention
For plan execution, prefer /execute evidence files. For freeform work, chat evidence is acceptable if it includes the command, exit code, and last 5 lines.
Related
${BDC_HOME:-$HOME/.bdc}/skills/execute/references/tdd-cycle.md § 6${BDC_HOME:-$HOME/.bdc}/skills/execute/SKILL.md
Verification
- The final response includes command, exit code, and last 5 lines.
- If no command can be identified, the response says verification could not be run instead of claiming done.
Red Flags
- The response says "should work" or "fixed" without command output.
- The only evidence is an earlier run from before the latest edit.
- The task changed behavior but no test, lint, typecheck, or script self-test ran.
Common Rationalizations
| Rationalization | Response |
|---|---|
| "This was just docs/config, no verify needed." | Advisory unless the file is behavior-rule config. Incident: standards/debugging.md 2026-04-26 records silent skip branches in BDC automation; behavior-rule files need executable checks when possible. |
| "The previous run passed." | Do not claim done. Incident: standards/debugging.md 2026-04-01 says recursive automation looked alive while core actions were not actually running; fresh evidence must be current. |
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.
- 10d ago First seen · 61 lines · 54 tokens per session scan A 6e721dafdfa9
verification-before-completion is a skill published in the GitHub repository 0xmariowu/builders-dont-cry (4 stars, last pushed 4mo ago), licensed MIT. It adds 54 tokens to every session and 527 once invoked, about $0.0003 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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