contract-audit

contract-audit is a skill for Claude Code, Codex from RunButter/runbutter. It costs 55 tokens per session (442 once invoked), scanned A, original, MIT.

A skill that searches uploaded contracts and documents for important terms such as renewal rules, notice periods, liability limits, and payment conditions. It can also compare those findings with client financial records.

In plain words
What is it for?
Use it to find contract clauses across clients or answer questions such as which agreements renew automatically while money is still owed. It returns matching passages and can inspect the surrounding document text.
Why use it?
It avoids relying on incomplete manual PDF reading and warns when documents cannot be searched, such as scanned files without text.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to find contract clauses across clients or answer questions such as which agreements renew automatically while money is still owed. It returns matching passages and can inspect the surrounding document text.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/runbutter/runbutter/contract-audit
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.

Any agent
npx skills add RunButter/runbutter --skill contract-audit
Clone the repo
git clone --depth 1 https://github.com/RunButter/runbutter

Made for: Claude Code, Codex.

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 contract-audit

README.md
[![agentmods](https://agentmods.dev/badge/skills/runbutter/runbutter/contract-audit.svg)](https://agentmods.dev/skills/runbutter/runbutter/contract-audit)
Your own site
<a href="https://agentmods.dev/skills/runbutter/runbutter/contract-audit"><img src="https://agentmods.dev/badge/skills/runbutter/runbutter/contract-audit.svg" alt="Measured on agentmods" height="20"></a>
Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 442 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 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 5.1 $0.00055 $0.00442
Opus 5 $0.00028 $0.00221
Sonnet 5 $0.00011 $0.00088
Haiku 4.5 $0.00006 $0.00044

Measured 7d ago against content hash 54bbda4b8e8b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

contract-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 7d 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.

plugin/skills/contract-audit/SKILL.md · 46 lines

What it actually says

Contract audit

The point of this

Files and the ledger are in the same database, so "which contracts auto-renew, for clients who owe us money" is one question rather than an afternoon. That join is the reason to use these tools rather than reading PDFs by hand.

search_files runs full-text search and returns snippets with the matched terms delimited by «». get_file_text returns a whole document when you need surrounding context; list_files shows what exists.

Check the warning search_files returns. If nothing is indexed, an empty result means nothing was searched — not that the clause is absent. Reporting "no auto-renewal clauses found" from an empty index is a false negative on exactly the question that was asked. Say the index is empty instead.

Extraction can also be marked skipped, with a reason: a scanned PDF with no text layer has no words to find. Those files are invisible to search and must be named as unread, not silently omitted.

Search terms

Search for the language, not the concept. "Auto-renewal" appears as renew, renewal term, evergreen, unless terminated, automatically extend. Run several searches and merge.

Cross-reference

Once you have the contracts, list_records on invoices and get_record on each client turns a list of clauses into a decision: a renewal in six weeks for a client with an overdue balance is the one that needs attention this week.

Quote, do not summarise

Give the clause text and the file it came from. A summary of a liability cap is not something anyone can act on, and this is the kind of question where being approximately right is being wrong.

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. 7d ago First seen · 46 lines · 55 tokens per session scan A 54bbda4b8e8b

Subscribe to this mod's changes

contract-audit is a skill published in the GitHub repository RunButter/runbutter (2 stars, last pushed 19d ago), licensed MIT. It adds 55 tokens to every session and 442 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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