mathilda: Skill for Claude Code

.claude/skills/api-integration/SKILL.md

api-integration is a skill for Claude Code from stblake/mathilda. It costs 42 tokens per session (1,473 once invoked), scanned A, original, GPL-3.0.

A guide for connecting an application to a third-party REST or GraphQL API. These are web interfaces used to request or send data, with support for authentication, rate limits, retries, and connecting responses to the application.

In plain words
What is it for?
Use it when fetching data from or sending data to a REST or GraphQL service, including authentication, retry handling, rate-limit handling, and response integration.
Why use it?
It addresses the common difficulties of external services, such as access credentials, too many requests, and temporary failures. It also covers getting returned data into the application.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

This is stblake/mathilda's own configuration. It tells Claude Code how to work on mathilda itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mathilda configures →

Reuse

Borrowing it

Nothing to install: this file belongs to stblake/mathilda. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/stblake/mathilda/main/.claude/skills/api-integration/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/stblake/mathilda

Made for: Claude Code.

Wrote 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.

agentmods badge for api-integration

README.md
[![agentmods](https://agentmods.dev/badge/skills/stblake/mathilda/api-integration/github.svg)](https://agentmods.dev/skills/stblake/mathilda/api-integration)
Your own site
<a href="https://agentmods.dev/skills/stblake/mathilda/api-integration"><img src="https://agentmods.dev/badge/skills/stblake/mathilda/api-integration/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.

agentmods 80×15 button for api-integration

Your own site · 80×15
<a href="https://agentmods.dev/skills/stblake/mathilda/api-integration"><img src="https://agentmods.dev/badge/skills/stblake/mathilda/api-integration.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,473 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 5.1 $0.00042 $0.01473
Opus 5.5 $0.00017 $0.00589
Sonnet 5.5 $0.00008 $0.00295
Haiku 4.5 $0.00004 $0.00147

Measured 2mo ago against content hash 076040e070f2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

api-integration scanned grade A with 1 finding 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 2mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- `requests.get(url)` without error handling — always check status.
.claude/skills/api-integration/SKILL.md · 166 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 2mo ago First seen · 166 lines · 42 tokens per session scan A 076040e070f2

Subscribe to this mod's changes

api-integration is a skill published in the GitHub repository stblake/mathilda (20 stars, last pushed yesterday), licensed GPL-3.0. It adds 42 tokens to every session and 1,473 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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