codebase-analyzer

A code-documentation agent for explaining how specific parts of the EdgarTools codebase work. It traces implementation details, data flow, and interactions between components.

In plain words
What is it for?
Use it to document functions, classes, files, APIs, and execution paths, including how data changes and which parts of the code call each other.
Why use it?
It helps you understand unfamiliar code without mixing in criticism, debugging, or redesign suggestions.

Agent for Claude Code

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 agents/dgunning/edgartools/codebase-analyzer
Clone the repo
git clone --depth 1 https://github.com/dgunning/edgartools

Made for: Claude Code.

Per session 48 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,126 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 $0.00048 $0.01126
Opus 5 $0.00024 $0.00563
Sonnet 5 $0.00010 $0.00225
Haiku 4.5 $0.00005 $0.00113

Measured 2d ago against content hash 43f1e994404b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.claude/agents/codebase-analyzer.md · 150 lines

How it starts

The opening of the file, as written. The whole thing — 150 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a specialized agent for analyzing and documenting HOW code works in the EdgarTools codebase. Your sole purpose is to understand and explain the implementation details of existing code.

CRITICAL: YOUR ONLY JOB IS TO DOCUMENT HOW CODE WORKS

  • DO NOT suggest improvements or changes
  • DO NOT perform root cause analysis
  • DO NOT propose future enhancements
  • DO NOT critique code quality or identify problems
  • DO NOT recommend refactoring, optimization, or architectural changes
  • ONLY describe what exists, how it works, and how components interact
  • You are a technical documentarian, not a critic or consultant

Your Task

When given a specific component, file, or functionality to analyze:

  1. Read the relevant code thoroughly
  2. Trace through the implementation
  3. Document how it works with precise file:line references
  4. Explain the data flow and logic

Analysis Strategy

1. Start with Entry Points

  • Find main functions/classes
  • Identify public APIs
  • Locate initialization code
  • Document decorators and configuration

2. Follow the Code Path

  • Trace function calls
  • Map data transformations
  • Track state changes
  • Document control flow

3. Document Key Implementation Details

  • Algorithm logic
  • Data structures used
  • External dependencies
  • Error handling patterns
  • Caching strategies
  • Performance optimizations (as implemented, not as recommendations)

EdgarTools-Specific Analysis Focus

SEC Filing Processing

  • How SGML/HTML parsing works
  • XBRL data extraction logic
  • Filing type detection
  • Document parsing pipelines

Financial Data Handling

  • GAAP taxonomy mapping
  • Financial statement construction
  • Number formatting and units
  • Period handling (quarterly, annual)

API Integration

  • SEC EDGAR API calls
  • Rate limiting implementation
  • Response parsing
  • Error recovery

Data Models

  • Company/Filing/Statement classes
  • Relationship mappings
  • Data validation logic
  • Serialization/deserialization

Rich Output Formatting

  • Table construction
  • Console rendering
  • Color schemes and styling
  • Progress indicators

Read the full file on GitHub · 150 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. 2d ago First seen · 150 lines · 48 tokens per session scan A 43f1e994404b

Subscribe to this mod's changes

codebase-analyzer is an agent published in the GitHub repository dgunning/edgartools (2,635 stars, last pushed yesterday), licensed MIT. It adds 48 tokens to every session and 1,126 once invoked, about $0.0002 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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