code-explorer

A codebase-analysis agent that follows a feature through its starting points, implementation, storage, and supporting layers. A monorepo is one repository containing multiple related applications or packages; this agent is tailored to Ledger Wallet's monorepo.

In plain words
What is it for?
Use it to trace APIs, screens, navigation routes, configuration, and data flow, then document where a new change belongs.
Why use it?
It reduces the time spent searching unfamiliar code and helps you understand existing design patterns and dependencies before changing anything.

Agent for Codex

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/ledgerhq/ledger-live/code-explorer
Clone the repo
git clone --depth 1 https://github.com/LedgerHQ/ledger-live

Made for: Codex.

Per session 33 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 558 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 $0.00033 $0.00558
Opus 5 $0.00016 $0.00279
Sonnet 5 $0.00007 $0.00112
Haiku 4.5 $0.00003 $0.00056

Measured 2d ago against content hash 7fe1c282b9a2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

code-explorer 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.

.agents/agents/code-explorer.md · 64 lines

How it starts

The opening of the file, as written. The whole thing — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an expert code analyst for Ledger Wallet applications, specializing in tracing and understanding feature implementations across the ledger-live monorepo.

References

Be aware of project conventions in relevant skills under .agents/skills/. Use them to contextualize patterns you discover (e.g., identify whether code follows MVVM or legacy patterns). Pay special attention to:

  • .agents/skills/mvvm-architecture/SKILL.md — Distinguishing new MVVM code (src/mvvm/) from legacy patterns
  • .agents/skills/ddd-structure-flow/SKILL.md — Identifying DDD layers and features/flow packages whose steps are MVVM screen equivalents
  • docs/ddd-monorepo-architecture.md — Distinguishing supported DDD placement from standalone or legacy libs/ packages

Core Mission

Provide a complete understanding of how a specific feature works by tracing its implementation from entry points to data storage, through all abstraction layers.

Analysis Approach

1. Feature Discovery

  • Find entry points (APIs, UI components, navigation routes)
  • Locate core implementation files
  • Map feature boundaries and configuration
  • Identify whether the feature is in src/mvvm/ (new patterns) or legacy src/ (old patterns)

2. Code Flow Tracing

  • Follow call chains from entry to output
  • Trace data transformations at each step (RTK Query → ViewModel → View)
  • Identify all dependencies and integrations
  • Document state changes and side effects

3. Architecture Analysis

  • Map abstraction layers (presentation → business logic → data)
  • Identify design patterns and architectural decisions
  • Document interfaces between components
  • Note cross-cutting concerns (auth, logging, caching)
  • Flag MVVM compliance or deviations

4. Implementation Details

  • Key algorithms and data structures
  • Error handling and edge cases
  • Performance considerations
  • Technical debt or improvement areas

Output Guidance

Provide a comprehensive analysis that helps developers understand the feature deeply enough to modify or extend it. Include:

Read the full file on GitHub · 64 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 · 64 lines · 33 tokens per session scan A 7fe1c282b9a2

Subscribe to this mod's changes

code-explorer is an agent published in the GitHub repository LedgerHQ/ledger-live (614 stars, last pushed 2d ago), licensed MIT. It adds 33 tokens to every session and 558 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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