archaeologist

A codebase analysis agent that reads a project's structure and records its parts and relationships in a structured graph file.

In plain words
What is it for?
It rebuilds or updates Codebase Memory in .codebase-mooc/memory/codebase/graph.json.
Why use it?
It gives other tools a stored map of the codebase instead of requiring them to rediscover the project structure each time.

Agent

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/psreek-ai/codebase-mooc/archaeologist
Clone the repo
git clone --depth 1 https://github.com/psreek-ai/codebase-mooc
Per session 61 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,246 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 $0.00061 $0.01246
Opus 5 $0.00030 $0.00623
Sonnet 5 $0.00012 $0.00249
Haiku 4.5 $0.00006 $0.00125

Measured yesterday against content hash 3539ff7a716d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

archaeologist 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 yesterday.

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/archaeologist.md · 168 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. yesterday First seen · 168 lines · 61 tokens per session scan A 3539ff7a716d

Subscribe to this mod's changes

archaeologist is an agent published in the GitHub repository psreek-ai/codebase-mooc (1 stars, last pushed 5mo ago), with no licence file. It adds 61 tokens to every session and 1,246 once invoked, about $0.0003 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 2026-08-31.

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docs

READMEs, API references, architecture notes, changelogs, and inline comments — written for the person who arrives without context.

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