app-integration-shaping

app-integration-shaping is a skill for Claude Code, Codex from 45ck/skill-harness. It costs 30 tokens per session (198 once invoked), scanned A, original, MIT.

A design guide for deciding how an outside app or service should connect to your software. It covers where the connection belongs, what access it needs, who owns it, and how failures should be handled.

In plain words
What is it for?
Use it when comparing a direct API client, a separate worker, an MCP connector, or postponing the integration. It helps document data flow, trust boundaries, retries, rate limits, and monitoring needs.
Why use it?
It helps prevent poorly defined integrations, excessive access permissions, unclear ownership, and fragile handling of limits or outages.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

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 skills/45ck/skill-harness/app-integration-shaping
Any agent
npx skills add 45ck/skill-harness --skill app-integration-shaping
Clone the repo
git clone --depth 1 https://github.com/45ck/skill-harness

Made for: Claude Code, Codex.

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 app-integration-shaping

README.md
[![agentmods](https://agentmods.dev/badge/skills/45ck/skill-harness/app-integration-shaping.svg)](https://agentmods.dev/skills/45ck/skill-harness/app-integration-shaping)
Your own site
<a href="https://agentmods.dev/skills/45ck/skill-harness/app-integration-shaping"><img src="https://agentmods.dev/badge/skills/45ck/skill-harness/app-integration-shaping.svg" alt="Measured on agentmods" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 198 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 5.1 $0.00030 $0.00198
Opus 5 $0.00015 $0.00099
Sonnet 5 $0.00006 $0.00040
Haiku 4.5 $0.00003 $0.00020

Measured 6d ago against content hash c7945d9456b1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

app-integration-shaping 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 6d 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.

packs/integration-tooling-skills/skills/app-integration-shaping/SKILL.md · 28 lines

What it actually says

Use this skill when deciding whether a new external integration belongs in the system and how it should be shaped.

Compare these options explicitly:

  • direct API client inside the application
  • separate service or worker
  • MCP server or connector-style integration
  • no integration yet because the problem is still underspecified

Checklist:

  • define the user or system workflow that needs the integration
  • identify data movement, ownership, and trust boundaries
  • specify required auth scopes and whether they are acceptable
  • call out rate limits, retries, partial failure, and observability needs
  • end with the recommended integration style and why it is the least-wrong option

Avoid:

  • defaulting to MCP because it is fashionable
  • burying auth scope risk inside implementation detail
  • merging integration design with product prioritization
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. 6d ago First seen · 28 lines · 30 tokens per session scan A c7945d9456b1

Subscribe to this mod's changes

app-integration-shaping is a skill published in the GitHub repository 45ck/skill-harness (15 stars, last pushed 2mo ago), licensed MIT. It adds 30 tokens to every session and 198 once invoked, about $0.0002 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.

Related

Other skills, from other repositories

eve

Build durable backend AI agents with the eve framework. Use when creating, editing, or debugging an eve project — agent instructions, skills, tools, connections, channels, sandboxes, subagents, schedules, or evals.

ComposioHQ/composio · 47 tokens

cross-sdk-parity

Keep TypeScript and Python SDK behavior, generated client usage, public API naming, and docs examples aligned. Use when a change affects both SDKs, when generated client pins move, when comparing TS/Python behavior, or when a backend API contract changed. Do not use for single-language internal-only changes.

ComposioHQ/composio · 66 tokens

typescript-sdk

Implement or modify TypeScript SDK behavior in @composio/core or shared TypeScript packages, including tools, toolkits, sessions, auth configs, connected accounts, modifiers, and generated SDK surfaces. Use for TS runtime/API work; pair with typescript-testing for verification and cross-sdk-parity when Python must…

ComposioHQ/composio · 67 tokens

python-sdk

Implement or modify Python SDK behavior under python/composio, including tools, toolkits, sessions, auth configs, connected accounts, client integration, and shared Python models. Use for Python core runtime/API work; pair with python-testing and cross-sdk-parity when TypeScript must match.

ComposioHQ/composio · 60 tokens

potpie-repo-baseline

Use when establishing, refreshing, or deeply understanding a repository's baseline memory in Potpie: purpose, application type, features, services/modules, environments, deploy shape, dependencies, API contracts, datastores, integrations, ownership, and explicit preferences. The harness reads authored and…

potpie-ai/potpie · 75 tokens

potpie-infra-architecture

Use for project infra and architecture context: environments, adapters, runtime configuration, deployments, service dependencies, datastores, API contracts, ownership, incidents, and dependency blast radius.

potpie-ai/potpie · 43 tokens