custom-connectors

custom-connectors is a skill for Claude Code from satriotsubasa/PowerPlatform-Core. It costs 182 tokens per session (998 once invoked), scanned A, original, Apache-2.0.

A design guide for connecting Microsoft Power Platform to an external API. It reviews an API description, authentication, available operations, and the choice between a direct connector and an Azure Function or API facade.

In plain words
What is it for?
Use it to plan Power Platform custom connectors, review OpenAPI or Swagger files, choose authentication, map operations, and prepare connection references and environment variables.
Why use it?
It helps resolve integration design decisions before building or publishing the connector, including settings needed across development environments.

Skill for Claude Code

Written for Claude Code: $CLAUDE_PLUGIN_ROOT variable. Also seen: mentions Claude Code; mentions Codex.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the powerplatform-core plugin — 12 skills shipped together

Good fit Use it to plan Power Platform custom connectors, review OpenAPI or Swagger files, choose authentication, map operations, and prepare connection references and environment variables.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add satriotsubasa/PowerPlatform-Core
Claude Code
/plugin install powerplatform-core

Made for: Claude Code.

Or install powerplatform-core, the plugin that ships this one along with the rest of its 12 skills.

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/satriotsubasa/powerplatform-core/custom-connectors/github.svg)](https://agentmods.dev/skills/satriotsubasa/powerplatform-core/custom-connectors)
Your own site
<a href="https://agentmods.dev/skills/satriotsubasa/powerplatform-core/custom-connectors"><img src="https://agentmods.dev/badge/skills/satriotsubasa/powerplatform-core/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/satriotsubasa/powerplatform-core/custom-connectors"><img src="https://agentmods.dev/badge/skills/satriotsubasa/powerplatform-core/custom-connectors.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 182 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 998 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 $0.00182 $0.00998
Opus 5 $0.00091 $0.00499
Sonnet 5 $0.00036 $0.00200
Haiku 4.5 $0.00018 $0.00100

Measured 9d ago against content hash 8dd18deffa59, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, 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 9d 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.

plugins/powerplatform-core/skills/custom-connectors/SKILL.md · 61 lines

How it starts

The opening of the file, as written. The whole thing — 61 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Custom Connectors and Integration Wrappers

This skill helps design how Power Platform talks to an external API: reviewing the API description, settling the authentication shape, inventorying operations, and — critically — recommending whether the integration should be a direct custom connector or sit behind an Azure Function / API facade. It is design-first. It produces a reviewed structure and recommendation; the actual connector publish or Azure delivery still needs its own implementation path. Keep the result solution-aware with explicit connection references and environment variables so it promotes cleanly across environments.

When to use this

  • Review an OpenAPI/Swagger document or a structured integration requirement for connector suitability.
  • Recommend an auth approach and inventory the operations to expose.
  • Decide direct custom connector vs Azure Function / API facade.
  • Plan the environment variables and connection references the integration needs for ALM.

For the flow that will call the connector, use power-automate-flows. For server-side logic inside Dataverse, use plugins-server-extensions.

Helpers

Helpers live in the plugin's scripts/ directory at the plugin root, not inside this skill folder. Resolve the plugin root and invoke them:

  • Claude Code: python "$CLAUDE_PLUGIN_ROOT/scripts/design_custom_connector.py" --help
  • Codex: python "$CODEX_PLUGIN_ROOT/scripts/design_custom_connector.py" --help (also exposed as $PLUGIN_ROOT)
  • Standalone / unsure: the scripts/ folder sits beside this skill bundle; invoke by its path within the install.
Helper Use it to
design_custom_connector.py Review an OpenAPI description or structured requirement and emit a connector name, auth approach, operation summaries, a recommended pattern (direct connector vs facade), suggested environment variables, and connection-reference guidance.

Workflow

  1. Inspect the source. Read the OpenAPI/Swagger description or the structured integration requirement before deciding anything.
  2. Judge direct-connector fit. A clean, REST-shaped, JSON API with standard auth is a good direct custom-connector candidate.
  3. Prefer a facade when the shape is hard. If the integration involves binary payloads, heavy transformation, fan-out/orchestration, or non-REST behavior, recommend an Azure Function (or similar) facade first and expose that as the connector.
  4. Settle auth. Recommend the auth approach (API key, OAuth2, basic, none) that matches the API and the platform's supported connector auth types.
  5. Keep it solution-aware. Plan explicit connection references and environment variables so credentials are not hardcoded and the connector promotes across Dev → Test → Prod.
  6. Hand off delivery. State clearly what still needs a separate implementation path: publishing the connector, or building and deploying the Azure facade.

Read the full file on GitHub · 61 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. 9d ago First seen · 61 lines · 182 tokens per session scan A 8dd18deffa59

Subscribe to this mod's changes

custom-connectors is a skill published in the GitHub repository satriotsubasa/PowerPlatform-Core (17 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 182 tokens to every session and 998 once invoked, about $0.0009 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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