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/jpeetz/agent-skills/graphql-api-developmentnpx skills add JPeetz/agent-skills --skill graphql-api-developmentgit clone --depth 1 https://github.com/JPeetz/agent-skillsWrote 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/jpeetz/agent-skills/graphql-api-development)<a href="https://agentmods.dev/skills/jpeetz/agent-skills/graphql-api-development"><img src="https://agentmods.dev/badge/skills/jpeetz/agent-skills/graphql-api-development.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 | $0.00183 | $0.08331 |
| Opus 5 | $0.00092 | $0.04165 |
| Sonnet 5 | $0.00037 | $0.01666 |
| Haiku 4.5 | $0.00018 | $0.00833 |
Grade A, and why
graphql-api-development 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 1,202 lines · 183 tokens per session scan A f1383695e18c
graphql-api-development is a skill published in the GitHub repository JPeetz/agent-skills (5 stars, last pushed 10d ago), with no licence file. It adds 183 tokens to every session and 8,331 once invoked, about $0.0009 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.
Other skills, from other repositories
graphql-docs
Use this skill whenever the user asks about GraphQL, query languages for APIs, schema design, types, resolvers, mutations, subscriptions, introspection, pagination, federation, or API best practices. Covers the full GraphQL specification including schemas and types, queries, mutations, subscriptions, validation…
graphql-expert
Expert-level GraphQL API development with schema design, resolvers, and subscriptions.
graphql-review
GraphQL Design & Security Review: Reviews GraphQL schemas, resolvers, and configurations for design quality, security, performance, and best practices. Covers schema design, N+1 prevention (DataLoader), query complexity limits, authentication, authorization, federation, and subscriptions. Use when the user mentions…
graphql-api-development
Comprehensive guide for building GraphQL APIs including schema design, queries, mutations, subscriptions, resolvers, type system, error handling, authentication, authorization, caching strategies, and production best practices.
GraphQL Contract Testing
Contract testing for GraphQL APIs including schema breaking change detection, query compatibility testing, and federated schema validation.
api-design
Use when settling the contract of an API you expose, before implementation: resources/URLs, REST vs GraphQL, versioning, one RFC 9457 error envelope, pagination, idempotency — emitted as OpenAPI 3.1. NOT implementing the endpoints (that is fastapi/nestjs/go/nodejs), NOT auth hardening (that is secure-coding), NOT…