Borrowing it
Nothing to install: this file belongs to Genocs/genocs-library. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Genocs/genocs-library/main/.claude/skills/webapi-builder/SKILL.mdgit clone --depth 1 https://github.com/Genocs/genocs-libraryWrote 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/genocs/genocs-library/webapi-builder)<a href="https://agentmods.dev/skills/genocs/genocs-library/webapi-builder"><img src="https://agentmods.dev/badge/skills/genocs/genocs-library/webapi-builder/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/genocs/genocs-library/webapi-builder"><img src="https://agentmods.dev/badge/skills/genocs/genocs-library/webapi-builder.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00021 | $0.00194 |
| Opus 5.5 | $0.00008 | $0.00078 |
| Sonnet 5.5 | $0.00004 | $0.00039 |
| Haiku 4.5 | $0.00002 | $0.00019 |
Grade A, and why
webapi-builder 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 1mo 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
Introduction
Use this skill to implement Web API services to implement microservices-based backend systems. The APIs should follow the best practices and conventions for RESTful API design, including:
- Use of HTTP methods (GET, POST, PUT, DELETE) appropriately.
- Use CQRS pattern to separate read and write operations for better scalability and maintainability.
- Publish messages to a message broker (e.g., RabbitMQ, Azure Service Bus) for asynchronous processing and decoupling of services.
- Use OpenAPI/Swagger for API documentation and testing.
- Use Genocs Library official documentation to scaffold web APIs or Worker services, which provides a set of tools and templates to help you get started quickly. Full documentation for the Genocs Library can be found at Genocs Documentation.
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.
- 1mo ago First seen · 22 lines · 21 tokens per session scan A 7d3a5cce8136
webapi-builder is a skill published in the GitHub repository Genocs/genocs-library (4 stars, last pushed 5d ago), licensed MIT. It adds 21 tokens to every session and 194 once invoked, about $0.0001 per session on Opus 5.5. 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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