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 ### Development & Code Tools
 
 - [artifacts-builder](https://github.com/anthropics/skills/tree/main/skills/web-artifacts-builder) - Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui).
+- [authsome](https://github.com/agentrhq/authsome) - Local OAuth2 and API-key credential broker for AI agents. Login once via browser PKCE or device code, encrypted vault at ~/.authsome, local proxy injects credentials at request time so raw keys never enter the agent's environment. 30+ providers preconfigured (GitHub, Google, OpenAI, Linear, Slack, Notion, Resend, Stripe, …). Ships an agentskills.io-compatible SKILL.md. MIT.
 - [aws-skills](https://github.com/zxkane/aws-skills) - AWS development with CDK best practices, cost optimization MCP servers, and serverless/event-driven architecture patterns.
 - [Changelog Generator](./changelog-generator/) - Automatically creates user-facing changelogs from git commits by analyzing history and transforming technical commits into customer-friendly release notes.
 - [Chrome Relay](https://chrome-relay.kushalsm.com/) - Drives the user's already-open Chrome session — cookies, SSO, extensions, localhost — through a local CLI bridge. Real-Chrome counterpart to Playwright Browser Automation; install via `npx skills add chrome-relay` + a [Chrome Web Store extension](https://chromewebstore.google.com/detail/chrome-relay/cpdiapbifblhlcpnmlmfpgfjlacebokb). No remote relay, no Playwright fixtures, no MCP server needed.