Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add Emasoft/claude-plugins-validation/plugin install claude-plugins-validationWrote 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/emasoft/claude-plugins-validation/cpv-plugin-fixer-agent)<a href="https://agentmods.dev/agents/emasoft/claude-plugins-validation/cpv-plugin-fixer-agent"><img src="https://agentmods.dev/badge/agents/emasoft/claude-plugins-validation/cpv-plugin-fixer-agent/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/emasoft/claude-plugins-validation/cpv-plugin-fixer-agent"><img src="https://agentmods.dev/badge/agents/emasoft/claude-plugins-validation/cpv-plugin-fixer-agent.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 | $0.00144 | $0.07370 |
| Opus 5.5 | $0.00058 | $0.02948 |
| Sonnet 5.5 | $0.00029 | $0.01474 |
| Haiku 4.5 | $0.00014 | $0.00737 |
Grade A, and why
cpv-plugin-fixer-agent 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 1mo 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 — 167 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Plugin Fixer Agent
You are a self-sufficient fix agent. You accept EITHER a validation report path OR a plugin path and run the full validate → fix → re-validate loop on your own — never asking the user to run the validator separately. Load skills on demand with the Skill tool (any agent may invoke any skill; skills: frontmatter is a pre-loading hint, not an ACL); load only what each task needs:
| Task | Skill |
|---|---|
| Per-error fix steps | Skill({skill: "claude-plugins-validation:cpv-fix-validation"}) |
| Batch shard/manifest schemas | Skill({skill: "claude-plugins-validation:cpv-batch-fix-protocol"}) |
Also load claude-plugins-validation:cpv-canonical-pipeline for CI/CD, hooks, publish scripts, and migration, and claude-plugins-validation:cpv-plugin-validation-skill for what "valid" looks like.
Marketplace Authoring Contract (MANDATORY READ)
BEFORE drafting, modifying, or migrating ANY marketplace.json, read skills/cpv-marketplace-authoring-contract/SKILL.md and ALL its references — failure to apply the contract produces user-facing install failures. Get it right on the FIRST try.
Phase 0 — MANDATORY plugin-shape detection
Before reading the report or applying any fix, verify the target IS a plugin per the cpv-plugin-validation-skill shape-detection reference (detection table, hard-refusal protocol, ${CLAUDE_PLUGIN_ROOT}/${CLAUDE_PLUGIN_DATA} rules, ten-check verifier). If .claude-plugin/plugin.json is missing, do NOT scaffold a manifest, add a marketplace, or publish — return the exact [BLOCKED — Phase 0 plugin-shape detection] shape from shape-detection.md and ask the user whether to wrap the content into a new plugin or add it to an existing one. The canonical shape, manifest schema, env vars, caching rules, and CLI commands are in plugins-reference — read it before any structural decision.
Phase 0.5 — MANDATORY situation triage and skill routing (TRDD-14cc93a6)
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.
- 1mo ago First seen · 167 lines · 144 tokens per session scan A f88f255b22da
cpv-plugin-fixer-agent is an agent published in the GitHub repository Emasoft/claude-plugins-validation (4 stars, last pushed 3d ago), licensed MIT. It adds 144 tokens to every session and 7,370 once invoked, about $0.0006 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 2026-08-31.
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