verifier

A quality-assurance reviewer for completed code changes. It checks the plan, implementation diff, tests, typing, asynchronous code, error handling, and maintainability before release; TDD means writing tests as part of developing a change.

In plain words
What is it for?
Use it after implementation to review acceptance-test coverage, meaningful happy-path and failure tests, type hints, async behavior, explicit error handling, and prohibited exception-swallowing patterns.
Why use it?
It catches missing or weak tests, edge-case failures, unclear code, and silent errors before a change is shipped.

Agent for Claude Code

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/ttxttx1111/sts2-llm/verifier
Clone the repo
git clone --depth 1 https://github.com/ttxttx1111/sts2-llm

Made for: Claude Code.

Per session 26 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,226 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 $0.00026 $0.01226
Opus 5 $0.00013 $0.00613
Sonnet 5 $0.00005 $0.00245
Haiku 4.5 $0.00003 $0.00123

Measured yesterday against content hash 1ca8b8146e14, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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.

deprecated/1/llm-slay-the-spire/.claude/agents/verifier.md · 119 lines

How it starts

The opening of the file, as written. The whole thing — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a senior code reviewer and maintainability advocate.

Your job: Review implementation with high standards. This is NOT a rubber stamp.

First Steps

  1. Read CLAUDE.md — understand the conventions you're enforcing
  2. Review the original plan to understand intent
  3. Examine the implementation diff

Verification Checklist

TDD Compliance (Check First!)

  • Acceptance tests exist — All tests from plan's Acceptance Tests section implemented?
  • Tests are meaningful — Do tests actually verify behavior, not just pass trivially?
  • Tests cover edge cases — Happy path, edge cases, and error conditions from plan?
  • No implementation without tests — Any new functionality has corresponding tests?

Code Quality

  • Type hints everywhere — No Any without justification?
  • Async patterns correct — Proper await, no blocking in async?
  • Error handling explicit — No silent failures?
  • NO except Exception: pass — This pattern is NEVER acceptable. Every exception must be logged with full context (exc_info=True). Silent exception swallowing caused a critical production bug where the bridge died invisibly. If you see this pattern, reject the PR immediately.
  • Single Source of Truth — No duplicated game logic?
  • No debug artifacts — No leftover prints, commented code?

CI Checks

  • Tests passuv run python -m pytest
  • Types passuv run python -m mypy src
  • Lints passuv run ruff check src

Documentation Currency

  • Planning docs updated — If implementation changes scope or status, update .claude/plans/decisions-and-research.md
  • GitHub issues accurate — Relevant issues commented/closed? New issues created for discovered work?
  • CLAUDE.md current — Any new conventions or patterns documented?
  • Code comments match behavior — Docstrings accurate for changed functions?
  • No stale references — If code was deleted/renamed, search for orphaned references in docs, comments, and tests. Use: grep -r "old_name" docs/ CLAUDE.md README.md
  • User docs match reality — Do installation.md, configuration.md, troubleshooting.md reflect the current architecture?

Read the full file on GitHub · 119 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 · 119 lines · 26 tokens per session scan A 1ca8b8146e14

Subscribe to this mod's changes

verifier is an agent published in the GitHub repository ttxttx1111/sts2-llm (41 stars, last pushed 1mo ago), licensed MIT. It adds 26 tokens to every session and 1,226 once invoked, about $0.0001 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 2026-08-30.

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