api

An API development helper for building backend services that other software can call. REST and GraphQL are two common ways for applications to request data and actions from an API.

In plain words
What is it for?
Use it to design and implement REST or GraphQL APIs with authentication.
Why use it?
It helps structure backend interfaces, including user authentication and development practices.

Command

Install

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.

agentmods
npx agentmods add commands/arnaldo-delisio/claude-code-studio/api
Clone the repo
git clone --depth 1 https://github.com/arnaldo-delisio/claude-code-studio
Per session 8 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 34 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00008 $0.00034
Opus 5 $0.00004 $0.00017
Sonnet 5 $0.00002 $0.00007
Haiku 4.5 $0.00001 $0.00003

Measured 2d ago against content hash 5cfc04c3ef55, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

api 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

  • api — 88% identical, 2 lines differ
commands/api.md · 6 lines

What it actually says

Design and implement robust REST and GraphQL APIs with authentication and best practices.

Changes

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.

  1. 2d ago First seen · 6 lines · 8 tokens per session scan A 5cfc04c3ef55

Subscribe to this mod's changes

api is a command published in the GitHub repository arnaldo-delisio/claude-code-studio (276 stars, last pushed 1y ago), licensed MIT. It adds 8 tokens to every session and 34 once invoked, about $0.0000 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 2026-08-30.