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 commands/geckse/markdown-vdb/execute-prdgit clone --depth 1 https://github.com/geckse/markdown-vdbWhat 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 | $0.00294 |
| Opus 5 | $0.00000 | $0.00147 |
| Sonnet 5 | $0.00000 | $0.00059 |
| Haiku 4.5 | $0.00000 | $0.00029 |
Grade A, and why
execute-prd 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
Execute PRD
Implement a feature by following a Product Requirements Document step by step.
PRD path: $ARGUMENTS
Instructions
-
Read the PRD — Read the file at the path above. Understand the full scope: overview, goals, non-goals, technical design, and implementation steps.
-
Read referenced files — The PRD's "Patterns to Follow" section references specific codebase files. Read them all to understand the conventions you must match.
-
Implement step by step — Follow the "Implementation Steps" section in order. For each step:
- Read the relevant files before modifying them
- Make the described changes
- Verify the change works before moving to the next step
-
Validate — After all steps are complete, work through every item in the "Validation Criteria" checklist:
- Run any tests mentioned
- Verify each criterion is satisfied
- If a criterion fails, fix the issue and re-validate
-
Check anti-patterns — Review your implementation against the "Anti-Patterns to Avoid" section. Fix any violations.
-
Report results — Summarize what was implemented, which validation criteria pass, and any issues encountered.
IMPORTANT: You cannot stop until every validation criterion is checked. Do not skip failing tests or claim "all tests pass" if any test has errors in the output.
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 · 28 lines · 0 tokens per session scan A 60546e6e4ef3
execute-prd is a command published in the GitHub repository geckse/markdown-vdb (23 stars, last pushed 18d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 294 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 2026-08-30.
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