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/lis186/sourceatlas/impact-analyzernpx skills add lis186/SourceAtlas --skill impact-analyzergit clone --depth 1 https://github.com/lis186/SourceAtlasWrote 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.
[](https://agentmods.dev/skills/lis186/sourceatlas/impact-analyzer)<a href="https://agentmods.dev/skills/lis186/sourceatlas/impact-analyzer"><img src="https://agentmods.dev/badge/skills/lis186/sourceatlas/impact-analyzer.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00052 | $0.00323 |
| Opus 5 | $0.00026 | $0.00161 |
| Sonnet 5 | $0.00010 | $0.00065 |
| Haiku 4.5 | $0.00005 | $0.00032 |
Grade A, and why
impact-analyzer 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.
What it actually says
Impact Analyzer
When to Use
Trigger this skill when the user:
- Is about to modify code and wants to know the impact
- Asks what depends on a file or component
- Wants to understand breaking change risks
- Asks "what will break if I change X"
- Asks "is it safe to modify this"
Instructions
- Identify the file, component, or API the user wants to change
- Run
/sourceatlas:impact "<target>"with the target - Returns dependency analysis, risk assessment, and migration checklist
Target Formats
- File path:
/sourceatlas:impact "src/api/users.ts" - API endpoint:
/sourceatlas:impact "api /api/users/{id}" - Component:
/sourceatlas:impact "UserService" - Model:
/sourceatlas:impact "User model"
What User Gets
- Impact summary (backend, frontend, test files affected)
- Risk level assessment (red/yellow/green)
- Breaking change risks
- Migration checklist
- Test coverage gaps
Example Triggers
- "What happens if I change this file?"
- "What depends on UserService?"
- "Is it safe to modify the authentication module?"
- "Impact of changing the User model"
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.
- 4d ago First seen · 44 lines · 52 tokens per session scan A a0aa3bee2463
impact-analyzer is a skill published in the GitHub repository lis186/SourceAtlas (47 stars, last pushed 1mo ago), licensed MIT. It adds 52 tokens to every session and 323 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 2026-08-30.
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