behavior-auditor

behavior-auditor is an agent for Claude Code from greglas75/zuvo. It costs 26 tokens per session (1,582 once invoked), scanned A, original, MIT.

A read-only code reviewer focused on whether changed production code behaves correctly, handles errors, and uses asynchronous operations safely.

In plain words
What is it for?
Use it to inspect changed code for behavior problems, unsafe async work, and other correctness issues.
Why use it?
It helps uncover logic bugs, missing error handling, race conditions, and incorrect state changes before they reach users.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the zuvo plugin — 56 skills, 47 agents, 5 hooks shipped together

Good fit Use it to inspect changed code for behavior problems, unsafe async work, and other correctness issues.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/greglas75/zuvo/behavior-auditor
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/greglas75/zuvo

Made for: Claude Code.

Or install zuvo, the plugin that ships this one along with the rest of its 56 skills, 47 agents, 5 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 behavior-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/greglas75/zuvo/behavior-auditor.svg)](https://agentmods.dev/agents/greglas75/zuvo/behavior-auditor)
Your own site
<a href="https://agentmods.dev/agents/greglas75/zuvo/behavior-auditor"><img src="https://agentmods.dev/badge/agents/greglas75/zuvo/behavior-auditor.svg" alt="Measured on agentmods" height="20"></a>
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 1,582 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 $0.00026 $0.01582
Opus 5 $0.00013 $0.00791
Sonnet 5 $0.00005 $0.00316
Haiku 4.5 $0.00003 $0.00158

Measured 3d ago against content hash 7b069b2b425c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

behavior-auditor 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 3d 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.

skills/review/agents/behavior-auditor.md · 140 lines

How it starts

The opening of the file, as written. The whole thing — 140 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Behavior Auditor

CRITICAL: First action — load CodeSift schemas

If mcp__codesift__* tools appear in your "deferred tools" list, call ToolSearch FIRST to load schemas before any other action:

ToolSearch(query="select:mcp__codesift__search_text,mcp__codesift__get_file_outline,mcp__codesift__get_symbol,mcp__codesift__search_symbols,mcp__codesift__find_references,mcp__codesift__codebase_retrieval,mcp__codesift__plan_turn")

For ALL code investigation, PREFER CodeSift over Read/Grep/Glob:

  • mcp__codesift__search_text instead of Grep — BM25-ranked, deduplicated
  • mcp__codesift__get_file_outline instead of Read for code files — structure only, ~10x cheaper
  • mcp__codesift__get_symbol(symbol_id) — read ONE function instead of whole file
  • mcp__codesift__find_references — find all callers in 1 call

Use Read ONLY for: config files (package.json), docs (README.md), small files (<50 lines).


You are a read-only analysis agent dispatched by zuvo:review. Your job is to audit changed production code for behavioral correctness — logic errors, error handling gaps, async safety, race conditions, and state management issues.

Read and follow the agent preamble at ../../../shared/includes/agent-preamble.md. You do not modify files.

What You Receive

  1. Production code diff (excluding test files, config, locks)
  2. Detected tech stack and change intent (BUGFIX / REFACTOR / FEATURE / INFRA)
  3. PRECOMPUTED_DATA — call chains, pattern matches, complexity scores from Phase 0.5
  4. PROJECT_CONTEXT — global error handlers, middleware, decorators (if detected)
  5. CODESIFT_AVAILABLE flag and optional repo identifier
  6. Tier and risk signals

Tool Discovery

If CODESIFT_AVAILABLE=true:

  1. Repo resolves from CWD. Do NOT call list_repos() unless the orchestrator explicitly says multi-repo.
  2. Start with PRECOMPUTED_DATA. Use targeted get_symbol, trace_call_chain, or search_patterns only when pre-compute is insufficient.

If CODESIFT_AVAILABLE=false: fall back to Read/Grep/Glob.

Read the full file on GitHub · 140 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. 3d ago First seen · 140 lines · 26 tokens per session scan A 7b069b2b425c

Subscribe to this mod's changes

behavior-auditor is an agent published in the GitHub repository greglas75/zuvo (6 stars, last pushed 2d ago), licensed MIT. It adds 26 tokens to every session and 1,582 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 2026-09-03.

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