codebase-analyzer

codebase-analyzer is an agent for Claude Code from shinpr/claude-code-discover. It costs 42 tokens per session (801 once invoked), scanned A, original, MIT.

An analysis agent that gathers factual, decision-relevant information from an existing code repository. It separates what the code clearly shows from assumptions about users or product value.

In plain words
What is it for?
Use it to inspect a repository for feature discovery, user-behavior clues, structural design, or implementation feasibility.
Why use it?
It helps discovery and planning use verifiable facts about the current system without treating implementation details as proof that a product idea is wanted.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the discover plugin — 15 skills, 5 agents shipped together

Good fit Use it to inspect a repository for feature discovery, user-behavior clues, structural design, or implementation feasibility.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/shinpr/claude-code-discover/codebase-analyzer
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/shinpr/claude-code-discover

Made for: Claude Code.

Or install discover, the plugin that ships this one along with the rest of its 15 skills, 5 agents.

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 codebase-analyzer

README.md
[![agentmods](https://agentmods.dev/badge/agents/shinpr/claude-code-discover/codebase-analyzer/github.svg)](https://agentmods.dev/agents/shinpr/claude-code-discover/codebase-analyzer)
Your own site
<a href="https://agentmods.dev/agents/shinpr/claude-code-discover/codebase-analyzer"><img src="https://agentmods.dev/badge/agents/shinpr/claude-code-discover/codebase-analyzer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for codebase-analyzer

Your own site · 80×15
<a href="https://agentmods.dev/agents/shinpr/claude-code-discover/codebase-analyzer"><img src="https://agentmods.dev/badge/agents/shinpr/claude-code-discover/codebase-analyzer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 42 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 801 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 $0.00042 $0.00801
Opus 5.5 $0.00017 $0.00320
Sonnet 5.5 $0.00008 $0.00160
Haiku 4.5 $0.00004 $0.00080

Measured 1mo ago against content hash 6b42767ed990, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

codebase-analyzer 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 1mo 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/codebase-analyzer.md · 74 lines

How it starts

The opening of the file, as written. The whole thing — 74 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an AI assistant specialized in codebase analysis. You operate in a separate context from the hypothesis/discovery workflow to provide unbiased, factual observations about the existing codebase.

Core Principle

Distinguish repository-observed facts from inferences and unknowns. Return inspectable evidence for each finding; user intent, demand, usage, and product value require direct evidence from an authoritative source. Product interpretation and solution choice remain with the owning workflow.

Input Contract

  • analysis_mode: feature_discovery | user_behavior | structural_design | feasibility
  • governing_context: the unchanged user request, hypothesis path, Opportunity path, or blueprint update request that defines which repository facts can affect the current decision

Use exactly these fields. Treat additional narrative as non-authoritative unless it is part of the supplied governing source.

Analysis Boundary

Inspect only facts that can change the current discovery, persona, feasibility, or verification decision named by analysis_mode and governing_context. Stop when further repository inspection cannot change one of those decisions. Inspect every consumer only when a public, shared, serialized, persistent, security, or error contract requires complete compatibility coverage; otherwise use representative paths.

Analysis Modes

Feature Discovery

When invoked for Opportunity discovery:

  • Map user-facing features relevant to the governing context (routes, pages, API endpoints)
  • Identify feature usage patterns (if analytics exist)
  • Document the current user journey through the application
  • Note complexity or technical debt only when it changes an in-scope Opportunity, feasibility judgment, or validation boundary

User Behavior Analysis

When invoked for persona creation/update:

  • Identify user roles defined in the system
  • Map permissions and access patterns
  • Analyze user-facing data models
  • Identify personalization or segmentation logic
  • Report notification/communication patterns

Read the full file on GitHub · 74 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. 1mo ago First seen · 74 lines · 42 tokens per session scan A 6b42767ed990

Subscribe to this mod's changes

codebase-analyzer is an agent published in the GitHub repository shinpr/claude-code-discover (12 stars, last pushed 1mo ago), licensed MIT. It adds 42 tokens to every session and 801 once invoked, about $0.0002 per session on Opus 5.5. 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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