spec-audit

A pre-coding review that challenges a written software specification for misunderstandings, missing cases, and unclear completion checks.

In plain words
What is it for?
Use it to inspect a specification for overlooked inputs, affected callers, inconsistent related code, failure cases, and runnable success checks.
Why use it?
It helps catch design problems before they become code, when they are cheaper to fix. It also checks that the plan solves the requested problem instead of a more elaborate one.

Command

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 commands/ashkaan/contextium/spec-audit
Clone the repo
git clone --depth 1 https://github.com/Ashkaan/contextium
Per session 15 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 261 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 $0.00015 $0.00261
Opus 5 $0.00008 $0.00130
Sonnet 5 $0.00003 $0.00052
Haiku 4.5 $0.00002 $0.00026

Measured 2d ago against content hash 2401dbb2d03f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

spec-audit 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 2d 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.

templates/commands/spec-audit.md · 12 lines

What it actually says

Review the SPEC you just wrote, adversarially, before it becomes code. A design flaw caught here costs a paragraph; the same flaw caught after the code exists costs the implementation.

  1. Read the SPEC against what was actually asked. Does it describe that thing, or a fancier interpretation of it? A SPEC can be internally excellent and solve the wrong problem.
  2. Attack the design: missing edge cases (0 / 1 / empty / max / error), downstream callers it doesn't mention, sibling code it leaves inconsistent, failure modes it never names, a shape heavier than the ask, and a "done" section that isn't an actual runnable command with an actual expected output.
  3. For each finding, either fix the SPEC now or write down why the finding is wrong. Those are the only two options — "track it for later" is how a known flaw ships.

In Claude Code this runs on a different model from the one that wrote the SPEC, when one is installed. In other tools, open a clean chat — ideally in a different assistant — load only the ask and the SPEC, and run this review there. The author is the worst reviewer of their own design.

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. 2d ago First seen · 12 lines · 15 tokens per session scan A 2401dbb2d03f

Subscribe to this mod's changes

spec-audit is a command published in the GitHub repository Ashkaan/contextium (32 stars, last pushed 5d ago), licensed MIT. It adds 15 tokens to every session and 261 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.