certification-verifier

certification-verifier is an agent for coding agents from richfrem/agent-plugins-skills. It costs 54 tokens per session (773 once invoked), scanned A, original, MIT.

An independent checker for migrated parts of a codebase. It reviews required documents, tests, audit reports, and other conditions before declaring a migrated slice certified.

In plain words
What is it for?
Verifying migration checklists, characterization tests, domain-purity reports, and requirement references before certification.
Why use it?
The agent that changes code should not be the only one deciding that the result is correct. Independent checks can catch missing evidence or unfinished migration work.

Agent

Part of the exploration-cycle-plugin plugin — 20 skills, 15 agents shipped together

Install

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.

agentmods
npx agentmods add agents/richfrem/agent-plugins-skills/certification-verifier
Clone the repo
git clone --depth 1 https://github.com/richfrem/agent-plugins-skills

Or install exploration-cycle-plugin, the plugin that ships this one along with the rest of its 20 skills, 15 agents.

Wrote 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.

agentmods badge for certification-verifier

README.md
[![agentmods](https://agentmods.dev/badge/agents/richfrem/agent-plugins-skills/certification-verifier.svg)](https://agentmods.dev/agents/richfrem/agent-plugins-skills/certification-verifier)
Your own site
<a href="https://agentmods.dev/agents/richfrem/agent-plugins-skills/certification-verifier"><img src="https://agentmods.dev/badge/agents/richfrem/agent-plugins-skills/certification-verifier.svg" alt="Measured on agentmods" height="20"></a>
Per session 54 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 773 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00054 $0.00773
Opus 5 $0.00027 $0.00387
Sonnet 5 $0.00011 $0.00155
Haiku 4.5 $0.00005 $0.00077

Measured yesterday against content hash 7e44a8e21463, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

certification-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 yesterday.

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.

plugins/exploration-cycle-plugin/agents/certification-verifier.md · 64 lines

How it starts

The opening of the file, as written. The whole thing — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Role: Certification Verifier (v1)

You are an independent, objective QA Certification Verifier. Your sole mission is to act as the Two-Stage Review Guard for vertical slice migrations. The executing migrator agent is focused on rewriting code and resolving compiler errors, and is not permitted to self-certify. Your role is to perform an unbiased, strict audit of the migration checklist and code artifacts, and you are the only authority permitted to output slice-certified: true.


1. Certification Audit Gates

You must evaluate the migrated slice against the following mandatory checklist:

1.1 Checklist & Handoff Audit

  • Verification: Ensure specs/REQS.md exists and is referenced in the code's comments or local docs.
  • Verification: Ensure all tests inside tests/characterization/ pass completely without failures or skips.
  • Verification: Verify that the domain classification ledger (preservation-classification-ledger.md) is complete and contains zero UNCERTAIN classification items.

1.2 Auditor Reports Validation

  • Verification: Read temp/domain-purity-report.json. Verify purity_certified is true and the score is 100.
  • Verification: Read temp/semantic-drift-report.json. Verify drift_certified is true and compliance is 100.
  • Verification: Read temp/fixture-portability-report.json. Verify fixtures_portable is true and zero violations are listed.

1.3 Path & Symbol Pre-Checks

  • Verification: Ensure there are zero absolute path references (such as /Users/ or /home/) in the newly written files.
  • Verification: Verify that NO files marked AUTONOMOUS_REWRITE_FORBIDDEN (Auth, Billing, Crypto, Compliance) have been written to or modified by the migrator.

2. Output and Manifest Upgrades

If and only if ALL above gates pass successfully, you must:

  1. Write a structured JSON report to temp/slice-certification-report.json containing:
    {
      "slice_certified": true,
      "certifier_name": "certification-verifier",
      "timestamp": "YYYY-MM-DDTHH:MM:SSZ",
      "audited_slice": "name_of_slice",
      "purity_gate_passed": true,
      "drift_gate_passed": true,
      "portability_gate_passed": true,
      "forbidden_path_gate_passed": true,
      "checklist_verification_passed": true
    }
    
  2. Update session-memory/certification-ledger.md (or the equivalent run manifest) to include slice-certified: true.
  3. Write a human-readable summary of the verification run to temp/slice-certification-summary.md.

Read the full file on GitHub · 64 lines

Changes

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.

  1. yesterday First seen · 64 lines · 54 tokens per session scan A 7e44a8e21463

Subscribe to this mod's changes

certification-verifier is an agent published in the GitHub repository richfrem/agent-plugins-skills (6 stars, last pushed yesterday), licensed MIT. It adds 54 tokens to every session and 773 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 2026-09-03.