codebase-navigator

An agent for navigating the pgEdge Postgres MCP Server codebase. It helps locate implementations and understand how the server's components interact.

In plain words
What is it for?
Use it to answer questions about the codebase structure, find where a feature is implemented, or trace how components work together.
Why use it?
It reduces the time needed to find relevant code in an unfamiliar database-server project. The description does not specify additional implementation or editing capabilities.

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/pgedge/pgedge-postgres-mcp/codebase-navigator
Clone the repo
git clone --depth 1 https://github.com/pgEdge/pgedge-postgres-mcp

Made for: Claude Code.

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,602 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00000 $0.01602
Opus 5 $0.00000 $0.00801
Sonnet 5 $0.00000 $0.00320
Haiku 4.5 $0.00000 $0.00160

Measured 2d ago against content hash 31fe34d059cb, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

codebase-navigator 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.

.claude/agents/codebase-navigator.md · 145 lines

The source is not reproduced here

Licensed PostgreSQL

The repository is licensed PostgreSQL, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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 · 145 lines · 0 tokens per session scan A 31fe34d059cb

Subscribe to this mod's changes

codebase-navigator is an agent published in the GitHub repository pgEdge/pgedge-postgres-mcp (221 stars, last pushed 7d ago), licensed PostgreSQL. It costs nothing until one of its globs matches a file; then it loads 1,602 tokens. 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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