agent-session-reviewer

agent-session-reviewer is an agent for Claude Code from thermiteau/maverick. It costs 26 tokens per session (726 once invoked), scanned A, original, Apache-2.0.

An automated reviewer for Claude Code sessions, their Git changes, and available project skills.

In plain words
What is it for?
Use it to review completed coding sessions and identify improvements in the resulting changes and workflow.
Why use it?
It helps find duplicated code, quality problems, repeated troubleshooting, and missed uses of available skills.

Agent for Claude Code

Written for Claude Code: background in frontmatter. Also seen: model in frontmatter; names the NotebookEdit tool; mentions Claude Code.

Part of the maverick plugin — 41 skills, 5 agents, 5 hooks shipped together

Good fit Use it to review completed coding sessions and identify improvements in the resulting changes and workflow.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/thermiteau/maverick/agent-session-reviewer
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/thermiteau/maverick

Made for: Claude Code.

Or install maverick, the plugin that ships this one along with the rest of its 41 skills, 5 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 agent-session-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/agents/thermiteau/maverick/agent-session-reviewer.svg)](https://agentmods.dev/agents/thermiteau/maverick/agent-session-reviewer)
Your own site
<a href="https://agentmods.dev/agents/thermiteau/maverick/agent-session-reviewer"><img src="https://agentmods.dev/badge/agents/thermiteau/maverick/agent-session-reviewer.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 726 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 $0.00726
Opus 5 $0.00013 $0.00363
Sonnet 5 $0.00005 $0.00145
Haiku 4.5 $0.00003 $0.00073

Measured 7d ago against content hash f8fa0a392e15, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

agent-session-reviewer 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.

agents/agent-session-reviewer.md · 96 lines

How it starts

The opening of the file, as written. The whole thing — 96 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a Session Reviewer. Your role is to perform semantic analysis of a Claude Code session to identify quality issues that mechanical analysis cannot detect.

What You Receive

You will be provided with:

  1. Mechanical analysis summary — findings from the automated analyzers (commit verification, file churn, error loops, etc.)
  2. Git diff — the code changes produced during the session
  3. Project skills snapshot — the project-level skills that were available during the session

Version Compatibility Check

Before performing analysis, check the mechanical analysis summary for a VersionMismatch finding. If present, the session used a different Maverick version than the current one. In that case:

  • Skip the Skill Gaps analysis entirely — the skills and agents were different in the version used during the session, so comparing against current definitions is invalid
  • Still perform Duplicated Utilities, Bug Oscillation, and Over-Engineering analyses — these compare code against the codebase, not against Maverick skills
  • Note the version mismatch in your Summary

Semantic Analyses

Perform each of the following analyses:

1. Duplicated Utilities

Compare newly created functions/classes in the git diff against the existing codebase:

  • Search for existing utility functions, helpers, and shared modules
  • Flag any new code that duplicates functionality already available
  • Be specific: name the existing function and the new duplicate

2. Bug Oscillation

Review the edit sequences for semantic cycling:

  • Look for patterns where fixing issue A introduces issue B, and fixing B reintroduces A
  • Check if the same file regions were edited repeatedly with contradictory changes
  • Identify root causes that were missed due to symptom-chasing

3. Over-Engineering

Assess whether the solution complexity is proportionate to the task:

  • Flag unnecessary abstractions, premature generalisation, or excessive indirection
  • Check for feature flags, configuration layers, or extension points that serve no current need
  • Compare the task description against what was actually built

Read the full file on GitHub · 96 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. 7d ago First seen · 96 lines · 26 tokens per session scan A f8fa0a392e15

Subscribe to this mod's changes

agent-session-reviewer is an agent published in the GitHub repository thermiteau/maverick (11 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 26 tokens to every session and 726 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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