custom-connectors

custom-connectors is a skill for Claude Code from korchard333/claude-power-platform-community. It costs 48 tokens per session (923 once invoked), scanned A, original, MIT.

A guide to building custom connectors, which let Power Platform apps and workflows use a REST API through a reusable interface.

In plain words
What is it for?
Use it to define OpenAPI files, configure OAuth or API-key authentication, add polling or webhook triggers, apply connector policies, and connect APIs through Azure APIM.
Why use it?
It helps avoid repeating API and authentication setup across Power Automate, Power Apps, and Copilot Studio. It also explains when to use a connector instead of a direct HTTP action.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to define OpenAPI files, configure OAuth or API-key authentication, add polling or webhook triggers, apply connector policies, and connect APIs through Azure APIM.

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Install with agentmods
npx agentmods add skills/korchard333/claude-power-platform-community/custom-connectors
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.

Any agent
npx skills add korchard333/claude-power-platform-community --skill custom-connectors
Clone the repo
git clone --depth 1 https://github.com/korchard333/claude-power-platform-community

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 custom-connectors

README.md
[![agentmods](https://agentmods.dev/badge/skills/korchard333/claude-power-platform-community/custom-connectors/github.svg)](https://agentmods.dev/skills/korchard333/claude-power-platform-community/custom-connectors)
Your own site
<a href="https://agentmods.dev/skills/korchard333/claude-power-platform-community/custom-connectors"><img src="https://agentmods.dev/badge/skills/korchard333/claude-power-platform-community/custom-connectors/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 custom-connectors

Your own site · 80×15
<a href="https://agentmods.dev/skills/korchard333/claude-power-platform-community/custom-connectors"><img src="https://agentmods.dev/badge/skills/korchard333/claude-power-platform-community/custom-connectors.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 923 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00048 $0.00923
Opus 5 $0.00024 $0.00462
Sonnet 5 $0.00010 $0.00185
Haiku 4.5 $0.00005 $0.00092

Measured 11d ago against content hash ab5c910e394e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

custom-connectors 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 11d 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.

.claude/skills/custom-connectors/SKILL.md · 84 lines

How it starts

The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill: Custom Connectors

When to Use

Trigger when building, configuring, or debugging custom connectors — reusable API wrappers that expose REST APIs as Power Platform connectors for use in Power Automate, Power Apps, and Copilot Studio.


When to Use Custom Connectors vs Alternatives

Scenario Use Why
Standard connector exists Standard connector Zero maintenance, Microsoft-supported
REST API used in one flow only HTTP action in Power Automate Simpler, no connector overhead
REST API used across multiple flows/apps Custom connector Reusable, typed, discoverable
REST API with complex auth (OAuth 2.0) Custom connector Auth handled once, shared across all uses
High-volume API calls needing throttling Custom connector + Azure APIM APIM handles rate limiting, caching, monitoring
On-premises API (no public endpoint) Custom connector + On-premises Data Gateway Gateway bridges private network

Project Structure

custom-connectors/
  contoso-erp/
    apiDefinition.swagger.json    # OpenAPI 2.0 definition
    apiProperties.json            # Connector metadata + policies
    icon.png                      # 160x160 connector icon
    settings.json                 # Test settings
  README.md

⚠️ REQUIRED: Load Sub-Files Before Implementation

SKILL.md is a summary only — it is NOT sufficient for implementation.

The detailed content (complete payloads, XML templates, working examples, edge-case handling) lives in sub-files in the same directory as this SKILL.md. Before writing any code, you MUST use read_file on the sub-files relevant to your task:

  • OpenAPI Definition — Swagger structure, action definitions, schema definitions, x-ms extensions, dynamic values/schema
  • Authentication — API Key, OAuth 2.0 (Authorization Code), Azure AD / Entra ID, apiProperties.json configuration
  • Triggers — Polling triggers (batch), webhook triggers, deregistration endpoint, trigger hints
  • Policies & APIM — Connector policies (set header, route request), Azure APIM integration, DLP classification, CLI workflow, solution-aware connectors

Read the full file on GitHub · 84 lines

Files

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.

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. 11d ago First seen · 84 lines · 48 tokens per session scan A ab5c910e394e

Subscribe to this mod's changes

custom-connectors is a skill published in the GitHub repository korchard333/claude-power-platform-community (47 stars, last pushed 5mo ago), licensed MIT. It adds 48 tokens to every session and 923 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.

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