integration-builder

integration-builder is a skill for Claude Code from CraftOS-dev/CraftBot. It costs 86 tokens per session (2,991 once invoked), scanned A, original, MIT.

A workflow for building an integration between a coding agent and a third-party service. It researches the service's API—the interface other software uses to call it—then creates the connection, operations, documentation, and tests.

In plain words
What is it for?
Use it to add support for services such as project trackers or other vendors, including their API operations, authentication, docs, and tests.
Why use it?
It reduces the risk of exposing unsupported API actions or choosing unsuitable authentication and data identifiers.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python scripts/verify_integration.py <name>.

Good fit Use it to add support for services such as project trackers or other vendors, including their API operations, authentication, docs, and tests.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/CraftOS-dev/CraftBot
agentmods
npx agentmods add skills/craftos-dev/craftbot/integration-builder

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 integration-builder

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

agentmods 80×15 button for integration-builder

Your own site · 80×15
<a href="https://agentmods.dev/skills/craftos-dev/craftbot/integration-builder"><img src="https://agentmods.dev/badge/skills/craftos-dev/craftbot/integration-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 86 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,991 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 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 5.1 $0.00086 $0.02991
Opus 5.5 $0.00034 $0.01196
Sonnet 5.5 $0.00017 $0.00598
Haiku 4.5 $0.00009 $0.00299

Measured 23d ago against content hash a734df2f546c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

integration-builder 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 23d 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.

curl -sSL -o "$SCRATCH/<name>_schema.json" "https://<vendor>/api/schema/?format=json"
skills/integration-builder/SKILL.md · 306 lines

How it starts

The opening of the file, as written. The whole thing — 306 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Integration builder

Produce a production-level craftos_integrations provider for one vendor.

The mechanical part of an integration — file layout, envelope, decorator shape, tag conventions — is maybe 30% of the work and is already specified in craftos_integrations/README.md. The other 70% is judgment: which endpoint groups an agent would realistically use, whether the vendor's auth pools identity or quota, what the canonical identifier shape is, which "delete" is really a PATCH.

So: the machine owns the inventory, the checklist and the verification. You own the scope and auth decisions. Nothing here decides what to expose. It decides whether you wrote down a defensible answer and whether the output passes the gates.

Do not skip to stage 5. Stages 1–4 are what stop you generating 60 plausible methods against endpoints that don't exist.


Stage 1 — Acquire the API surface

Get a machine-readable endpoint list before writing anything.

In preference order:

  1. An OpenAPI/Swagger schema. Most vendors publish one. Download it and parse it locally — do not read it through a doc-fetching tool.

    curl -sSL -o "$SCRATCH/<name>_schema.json" "https://<vendor>/api/schema/?format=json"
    

    Then group the paths by resource with a short Python script: for each path, the methods available. This is the inventory everything else hangs off.

  2. An in-repo API reference. Check skills/<name>-api/SKILL.md and skills/api-gateway/references/<name>.md first — several vendors already have one, written against the live API, and they record quirks the spec does not (PostHog's soft-delete rule came from there).

  3. The official REST reference docs, last. Cross-check the version and base URL.

Hard-won: vendor doc pages truncate when fetched and will silently give you a partial endpoint list. The schema does not. If you find yourself fetching a fourth doc page, stop and go get the schema.

Read the full file on GitHub · 306 lines

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. 23d ago First seen · 306 lines · 86 tokens per session scan A a734df2f546c

Subscribe to this mod's changes

integration-builder is a skill published in the GitHub repository CraftOS-dev/CraftBot (395 stars, last pushed today), licensed MIT. It adds 86 tokens to every session and 2,991 once invoked, about $0.0003 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 2026-09-24.

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