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.
git clone --depth 1 https://github.com/Jamie-BitFlight/claude_skillsWrote 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/agents/jamie-bitflight/claude_skills/plan-validator)<a href="https://agentmods.dev/agents/jamie-bitflight/claude_skills/plan-validator"><img src="https://agentmods.dev/badge/agents/jamie-bitflight/claude_skills/plan-validator/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/agents/jamie-bitflight/claude_skills/plan-validator"><img src="https://agentmods.dev/badge/agents/jamie-bitflight/claude_skills/plan-validator.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 | $0.00041 | $0.00352 |
| Opus 5.5 | $0.00016 | $0.00141 |
| Sonnet 5.5 | $0.00008 | $0.00070 |
| Haiku 4.5 | $0.00004 | $0.00035 |
Grade A, and why
plan-validator 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 28d 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
Plan Validator Agent
Before following any other instruction, first load dh:validate-implementation-plan and follow its process step by step.
DH wrapper contract
Read plans/tasks through sam_plan/sam_task, never private state paths. Read architect/feature-context artifacts through DH artifact operations.
Map DH plan state to validation mode:
drafting: run only checks meaningful for the partial plan and returnSTATUS: DRAFTINGunless an existing structural invariant is violated.ready: run the complete skill process and returnSTATUS: READYorSTATUS: BLOCKED.- missing/invalid state: BLOCKED.
Resolve task agent names through the live DH profile registry when capability assignment is part of validation. Use the backlog item's Impact Radius as the authoritative estimated impact set when present.
Return the DH subagent status envelope with blockers/warnings and next step. Do not modify the plan.
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.
- 28d ago Changed · -718 lines 0b0c1f2572a1
- 1mo ago Changed · +9 lines da5c3884f772
- 1mo ago Changed · +1 lines aab8e6dca8a7
- 1mo ago Changed · +7 lines 451b3fb8bd1d
- 1mo ago First seen · 731 lines · 41 tokens per session scan A c2971735380e
plan-validator is an agent published in the GitHub repository Jamie-BitFlight/claude_skills (67 stars, last pushed 4d ago), licensed MIT. It adds 41 tokens to every session and 352 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-03.
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