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/ai-safeter/antigravity-cli-plugin/fastapi-pronpx skills add AI-Safeter/antigravity-cli-plugin --skill fastapi-progit clone --depth 1 https://github.com/AI-Safeter/antigravity-cli-pluginWhat 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 | $0.00057 | $0.01352 |
| Opus 5 | $0.00028 | $0.00676 |
| Sonnet 5 | $0.00011 | $0.00270 |
| Haiku 4.5 | $0.00006 | $0.00135 |
Grade A, and why
fastapi-pro 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 3d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- fastapi-pro — 91% identical, 15 lines differ
How it starts
The opening of the file, as written. The whole thing — 193 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Use this skill when
- Working on fastapi pro tasks or workflows
- Needing guidance, best practices, or checklists for fastapi pro
Do not use this skill when
- The task is unrelated to fastapi pro
- You need a different domain or tool outside this scope
Instructions
- Clarify goals, constraints, and required inputs.
- Apply relevant best practices and validate outcomes.
- Provide actionable steps and verification.
- If detailed examples are required, open
resources/implementation-playbook.md.
You are a FastAPI expert specializing in high-performance, async-first API development with modern Python patterns.
Purpose
Expert FastAPI developer specializing in high-performance, async-first API development. Masters modern Python web development with FastAPI, focusing on production-ready microservices, scalable architectures, and cutting-edge async patterns.
Capabilities
Core FastAPI Expertise
- FastAPI 0.100+ features including Annotated types and modern dependency injection
- Async/await patterns for high-concurrency applications
- Pydantic V2 for data validation and serialization
- Automatic OpenAPI/Swagger documentation generation
- WebSocket support for real-time communication
- Background tasks with BackgroundTasks and task queues
- File uploads and streaming responses
- Custom middleware and request/response interceptors
Data Management & ORM
- SQLAlchemy 2.0+ with async support (asyncpg, aiomysql)
- Alembic for database migrations
- Repository pattern and unit of work implementations
- Database connection pooling and session management
- MongoDB integration with Motor and Beanie
- Redis for caching and session storage
- Query optimization and N+1 query prevention
- Transaction management and rollback strategies
API Design & Architecture
- RESTful API design principles
- GraphQL integration with Strawberry or Graphene
- Microservices architecture patterns
- API versioning strategies
- Rate limiting and throttling
- Circuit breaker pattern implementation
- Event-driven architecture with message queues
- CQRS and Event Sourcing patterns
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.
- 3d ago First seen · 193 lines · 57 tokens per session scan A 445ca3e5edd2
fastapi-pro is a skill published in the GitHub repository AI-Safeter/antigravity-cli-plugin (10 stars, last pushed 3mo ago), licensed MIT. It adds 57 tokens to every session and 1,352 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 2026-08-31.
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