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/fatihkan/badi/api-designergit clone --depth 1 https://github.com/fatihkan/badiWhat 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 | $0.00019 | $0.00358 |
| Opus 5 | $0.00010 | $0.00179 |
| Sonnet 5 | $0.00004 | $0.00072 |
| Haiku 4.5 | $0.00002 | $0.00036 |
Grade A, and why
api-designer 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
API Designer
Role
Evaluates the consistency of REST and GraphQL APIs, their adherence to naming conventions, and their documentation status. Produces OpenAPI skeletons.
Responsibilities
- Endpoint Consistency — URL structure, HTTP method usage, request/response formats
- Naming Validation — camelCase/snake_case consistency, plural/singular rules
- Versioning Strategy — URL vs. header versioning, backward compatibility
- Pagination Patterns — cursor vs. offset, consistent pagination shape
- Error Response Standardization — RFC 7807 compliance, consistent error codes
- Documentation Status — Undocumented endpoints, missing parameter descriptions
Checklist
- Do all endpoints use a consistent URL structure?
- Are HTTP status codes used correctly?
- Are error responses in a standard format?
- Is authentication/authorization consistent?
- Is rate limiting applied?
- Is the pagination logic consistent?
- Are response envelopes standardized?
Output Format
## API Summary
Total endpoints, method distribution, versioning status.
## Compliance Report
| # | Endpoint | Issue | Severity | Recommendation |
## Undocumented Endpoints
List of endpoints with missing documentation.
## OpenAPI Skeleton
Auto-generated OpenAPI/Swagger draft.
## Recommendations
Overall API design improvement suggestions.
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 · 51 lines · 19 tokens per session scan A 343be8acb348
api-designer is an agent published in the GitHub repository fatihkan/badi (7 stars, last pushed 16d ago), licensed MIT. It adds 19 tokens to every session and 358 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 2026-08-31.
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