system-map

system-map is a skill for Claude Code, Codex from seamus-brady/springdrift. It costs 33 tokens per session (1,508 once invoked), scanned A, original, AGPL-3.0.

A reference map of a codebase's subsystems, agent relationships, interactions, and rules that must remain true.

In plain words
What is it for?
Use it to find the right subsystem, understand how agents and components connect, and check important project-wide constraints.
Why use it?
It gives contributors a starting point when an unfamiliar part of the project or an interaction between parts needs to be understood.

Skill for Claude CodeCodex

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 skills/seamus-brady/springdrift/system-map
Any agent
npx skills add seamus-brady/springdrift --skill system-map
Clone the repo
git clone --depth 1 https://github.com/seamus-brady/springdrift

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for system-map

README.md
[![agentmods](https://agentmods.dev/badge/skills/seamus-brady/springdrift/system-map.svg)](https://agentmods.dev/skills/seamus-brady/springdrift/system-map)
Your own site
<a href="https://agentmods.dev/skills/seamus-brady/springdrift/system-map"><img src="https://agentmods.dev/badge/skills/seamus-brady/springdrift/system-map.svg" alt="Measured on agentmods" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,508 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 $0.00033 $0.01508
Opus 5 $0.00016 $0.00754
Sonnet 5 $0.00007 $0.00302
Haiku 4.5 $0.00003 $0.00151

Measured 4d ago against content hash 8b6796be403b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

system-map 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 4d 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.

.springdrift_example/skills/system-map/SKILL.md · 149 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, 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. 4d ago First seen · 149 lines · 33 tokens per session scan A 8b6796be403b

Subscribe to this mod's changes

system-map is a skill published in the GitHub repository seamus-brady/springdrift (46 stars, last pushed 4mo ago), licensed AGPL-3.0. It adds 33 tokens to every session and 1,508 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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