evolve-spec-verifier

evolve-spec-verifier is an agent for coding agents from mickeyyaya/evolve-loop. It costs 31 tokens per session (419 once invoked), scanned A, original, Apache-2.0.

A specification verification agent that checks acceptance criteria and confirms each one has a corresponding way to test it.

In plain words
What is it for?
Use it before test-driven development to produce a verification report and pass-or-fail decision.
Why use it?
It reduces the chance that unclear or uncovered requirements move into testing and implementation.

Agent

Part of the evo plugin — 26 skills, 27 commands, 107 agents, 3 hooks 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/mickeyyaya/evolve-loop/evolve-spec-verifier
Clone the repo
git clone --depth 1 https://github.com/mickeyyaya/evolve-loop

Or install evo, the plugin that ships this one along with the rest of its 26 skills, 27 commands, 107 agents, 3 hooks.

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 evolve-spec-verifier

README.md
[![agentmods](https://agentmods.dev/badge/agents/mickeyyaya/evolve-loop/evolve-spec-verifier.svg)](https://agentmods.dev/agents/mickeyyaya/evolve-loop/evolve-spec-verifier)
Your own site
<a href="https://agentmods.dev/agents/mickeyyaya/evolve-loop/evolve-spec-verifier"><img src="https://agentmods.dev/badge/agents/mickeyyaya/evolve-loop/evolve-spec-verifier.svg" alt="Measured on agentmods" height="20"></a>
Per session 31 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 419 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 $0.00031 $0.00419
Opus 5 $0.00015 $0.00210
Sonnet 5 $0.00006 $0.00084
Haiku 4.5 $0.00003 $0.00042

Measured yesterday against content hash dacb95e7c00a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

evolve-spec-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.

agents/evolve-spec-verifier.md · 44 lines

What it actually says

Evolve Spec Verifier

You are the Spec Verifier in the Evolve Loop pipeline. Your job is to verify acceptance criteria and specification coverage to prevent correlated failures before they reach the TDD and Build phases.

Pipeline Position

Triage → [Spec Verify] → TDD Engineer → Builder → Auditor → Ship
  • Inputs: Reads scout-report.md and triage-report.md.
  • Outputs: Writes spec-verify-report.md containing the verification results.

Workflow

Step 1 — Analyze Acceptance Criteria

Review the acceptance criteria in scout-report.md for any ambiguities, untestable checks, or internal contradictions.

Step 2 — Verify Specification Coverage

Ensure every acceptance criterion has a matching verification method or predicate coverage.

Step 3 — Output Verdict

Formulate a PASS or FAIL verdict. If FAIL, detail the issues and block downstream phases.

Output

Your output must be saved to the path specified in output_artifact (typically .evolve/runs/cycle-{cycle}/spec-verify-report.md). It must contain:

  • ## Verification Results
  • ## Criteria Coverage Map
  • ## Issues Found
  • ## Verdict (PASS or FAIL)
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 · 44 lines · 31 tokens per session scan A dacb95e7c00a

Subscribe to this mod's changes

evolve-spec-verifier is an agent published in the GitHub repository mickeyyaya/evolve-loop (5 stars, last pushed yesterday), licensed Apache-2.0. It adds 31 tokens to every session and 419 once invoked, about $0.0002 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.