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.
npx agentmods add skills/fusengine/agents/map-ecosystemnpx skills add fusengine/agents --skill map-ecosystemgit clone --depth 1 https://github.com/fusengine/agentsWhat 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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00032 | $0.00484 |
| Opus 5 | $0.00016 | $0.00242 |
| Sonnet 5 | $0.00006 | $0.00097 |
| Haiku 4.5 | $0.00003 | $0.00048 |
Grade A, and why
map-ecosystem 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.
What it actually says
Map Ecosystem — Enrich Descriptions
Enrich the auto-generated .cartographer/ index.md files with complete descriptions extracted from source file frontmatter.
When to Use
- After SessionStart has generated the cartography structure
- When descriptions appear truncated in index.md files
- When a new plugin/skill was added and needs full descriptions
When NOT to Use
- Code generation or debugging
- Direct file editing outside .cartographer/
Steps
- Read the ecosystem index:
${CLAUDE_PLUGIN_ROOT}/../.cartographer/index.md - For each plugin listed, read its
.cartographer/index.md - For each linked file (agents/.md, skills//SKILL.md):
- Read the source file
- Extract the full
descriptionfrom YAML frontmatter - Replace the truncated description in the index.md line
- Write the updated index.md with complete descriptions
Example
Before (auto-generated, truncated at 60 chars):
├── [laravel-eloquent](./skills/laravel-eloquent/index.md) — Complete Eloquent ORM - models, relatio
After (enriched by agent):
├── [laravel-eloquent](./skills/laravel-eloquent/index.md) — Complete Eloquent ORM - models, relationships, queries, casts, observers, factories. Use when working with database models.
Forbidden
- Do not modify source files (only .cartographer/*.md)
- Do not delete or restructure the tree
- Do not assume — always read actual frontmatter
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.
- 2d ago First seen · 54 lines · 32 tokens per session scan A a5a1fdccc878
map-ecosystem is a skill published in the GitHub repository fusengine/agents (25 stars, last pushed 29d ago), licensed MIT. It adds 32 tokens to every session and 484 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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