gsd-codebase-mapper

A codebase analysis assistant that explores a software project and writes organized notes about its technology, architecture, quality, or risks.

In plain words
What is it for?
Use it to map an unfamiliar codebase and produce focused reports on how it is built and where concerns may exist.
Why use it?
It records findings in documents so the main coordinating agent has less information to hold in its working context.

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/shekohex/dotai/gsd-codebase-mapper
Clone the repo
git clone --depth 1 https://github.com/shekohex/dotai
Per session 46 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,399 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. 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 $0.00046 $0.04399
Opus 5 $0.00023 $0.02200
Sonnet 5 $0.00009 $0.00880
Haiku 4.5 $0.00005 $0.00440

Measured yesterday against content hash 3a40100fe52a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

gsd-codebase-mapper scanned grade C with 1 finding 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.

Reaches for credential fileshighPrivilege escalation

SSH keys, cloud credentials, git-credentials, .npmrc, /etc/shadow: reading these is how a config file becomes a credential leak.

- `.npmrc`, `.pypirc`, `.netrc` - Package manager auth tokens
.opencode/agents/gsd-codebase-mapper.md · 778 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 · 778 lines · 46 tokens per session scan C 3a40100fe52a

Subscribe to this mod's changes

gsd-codebase-mapper is an agent published in the GitHub repository shekohex/dotai (10 stars, last pushed 5d ago), with no licence file. It adds 46 tokens to every session and 4,399 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it C with 1 finding (reaches for credential files). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.