design-deviation-verifier

design-deviation-verifier is an agent for Claude Code from masanami/claude-harness. It costs 62 tokens per session (1,860 once invoked), scanned A, original, no licence file.

A review agent that checks whether an implementation follows the important design decisions recorded in its feature requirements.

In plain words
What is it for?
Use it during feature development to review design consistency between a requirements document and an implementation diff.
Why use it?
It reduces reliance on an implementer’s own claim that the code matches the requirements by comparing the requirements with the actual code changes.

Agent for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: model in frontmatter.

Part of the claude-harness plugin — 22 skills, 22 agents, 1 hook shipped together

Good fit Use it during feature development to review design consistency between a requirements…

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/masanami/claude-harness/design-deviation-verifier
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.

Clone the repo
git clone --depth 1 https://github.com/masanami/claude-harness

Made for: Claude Code.

Or install claude-harness, the plugin that ships this one along with the rest of its 22 skills, 22 agents, 1 hook.

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 design-deviation-verifier

README.md
[![agentmods](https://agentmods.dev/badge/agents/masanami/claude-harness/design-deviation-verifier.svg)](https://agentmods.dev/agents/masanami/claude-harness/design-deviation-verifier)
Your own site
<a href="https://agentmods.dev/agents/masanami/claude-harness/design-deviation-verifier"><img src="https://agentmods.dev/badge/agents/masanami/claude-harness/design-deviation-verifier.svg" alt="Measured on agentmods" height="20"></a>
Per session 62 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,860 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 5.1 $0.00062 $0.01860
Opus 5 $0.00031 $0.00930
Sonnet 5 $0.00012 $0.00372
Haiku 4.5 $0.00006 $0.00186

Measured today against content hash 44943fecad5a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

design-deviation-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 today.

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/design-deviation-verifier.md · 65 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. today Changed 44943fecad5a
  2. 6d ago First seen · 65 lines · 62 tokens per session scan A df0473dc8db9

Subscribe to this mod's changes

design-deviation-verifier is an agent published in the GitHub repository masanami/claude-harness (5 stars, last pushed today), with no licence file. It adds 62 tokens to every session and 1,860 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 2026-08-31.

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