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 agents/random6913/claude-code-superkit/api-contract-syncgit clone --depth 1 https://github.com/RaNDoM6913/claude-code-superkitWrote 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/agents/random6913/claude-code-superkit/api-contract-sync)<a href="https://agentmods.dev/agents/random6913/claude-code-superkit/api-contract-sync"><img src="https://agentmods.dev/badge/agents/random6913/claude-code-superkit/api-contract-sync.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 | $0.00023 | $0.01677 |
| Opus 5 | $0.00012 | $0.00839 |
| Sonnet 5 | $0.00005 | $0.00335 |
| Haiku 4.5 | $0.00002 | $0.00168 |
Grade A, and why
api-contract-sync 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.
How it starts
The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.
API Contract Sync
Cross-check the API specification (OpenAPI/Swagger) against actual route registrations, handler request/response types, and error codes. Report drift in both directions.
Hard Rules
- Every reported row MUST cite a
file:line(routes/handlers) or spec location you actually Read this session — never report from a grep hit or memory alone. - NEVER invent spec content. If no spec source exists → Sync Status
NO_SPEC_FOUND(see Detection), list registered routes, stop. - Severity is this agent's own two-level enum: FAIL / WARN (defined below). Use no other levels.
- 0 issues =
IN_SYNCis a valid outcome — do not manufacture drift. - Report all 5 process steps, including steps that found nothing.
Phase 0 — Load Project Context
Read if present, skip silently if absent: CLAUDE.md or AGENTS.md; docs/architecture/api-reference.md.
Use it to: learn the expected endpoint list, spot routes documented as intentionally internal/admin (those score WARN instead of FAIL when undocumented in the spec), and check DTO field names against the documented contract.
When to Trigger
Invoke after changes to: route registration files · API spec files (manual YAML/JSON edits) · handler/controller files (new handlers, renamed methods, changed request/response shapes) · DTO/schema files (field additions, renames, type changes).
Detection
API spec — check in order, first match wins
**/openapi.yamlor**/openapi.json**/swagger.yamlor**/swagger.json**/api-spec.*- Annotation-based specs (Go swagger comments, JSDoc
@openapi, FastAPI auto-docs)
Default branch — none of the four found: set Sync Status NO_SPEC_FOUND, fill only the Undocumented Routes table with every registered route (Severity -), skip Steps 2–5, and finish.
Route registration — Grep by stack
- Go (chi/mux/gin/echo/fiber):
r.Get|r.Post|r.Put|r.Delete|r.Route|r.Group(or framework equivalents) - Node/Express:
app.get|app.post|router.get|router.post - Python/FastAPI:
@app.get|@app.post|@router.get - Python/Django:
path\(|urlpatterns - Rails: read
config/routes.rb
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.
- yesterday First seen · 128 lines · 23 tokens per session scan A d74bb576ea82
api-contract-sync is an agent published in the GitHub repository RaNDoM6913/claude-code-superkit (2 stars, last pushed 1mo ago), licensed MIT. It adds 23 tokens to every session and 1,677 once invoked, about $0.0001 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 2026-09-03.
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