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feat(mcp): OAuth 2.1 for ChatGPT/Claude connectors + shared cloud node for hosting_push - #310
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… cloud node for hosting_push The remote MCP server at /api/mcp only took a pasted c0k_ key, so it could not be added as a ChatGPT app or a claude.ai connector, and hosting_push needed a node the person had linked themselves, which nobody using an assistant has. - OAuth 2.1 authorization server for the MCP resource: RFC 9728 protected resource metadata (+ the /api/mcp suffixed path), RFC 8414 server metadata, RFC 7591 dynamic registration (public clients), /oauth/authorize behind "Sign in with CoinPay" with a CSRF-bound consent page, PKCE S256, single-use 5-minute codes. The token is an ordinary c0k_ key labelled "<app> (OAuth)", so the MCP route needs no new auth path and keys stay revocable. - /api/mcp answers 401 with WWW-Authenticate resource_metadata, plus OPTIONS/CORS. - Cloud node (C0MPUTE_CLOUD_NODE_ID): one house node publishes for accounts with no node of their own, --disks free (never spends a wallet), inline text only, names first come first served across accounts, 5 sites per account. Your own node still wins; node "cloud" picks it on purpose. - Tool annotations (readOnlyHint/destructiveHint/openWorldHint) and server instructions for ChatGPT apps. - docs/mcp-connectors.md; tests for the OAuth store and the cloud node. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
![github-advanced-security[bot]](https://avatars.githubusercontent.com/in/57789?s=60&v=4){kind=small}
| const shared = store.isCloud(n.id); | ||
| const rows = await sql.all( | ||
| `SELECT * FROM chat_pushes WHERE user_id = ? AND node_id = ? | ||
| `SELECT * FROM chat_pushes WHERE ${shared ? "" : "user_id = ? AND "}node_id = ? |
ThreatCrush Security Scan14 finding(s) HIGH/CRITICAL: 1 | MEDIUM: 9 | LOW: 4
Snippets are redacted; ThreatCrush never prints matched credential material. |
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Anthony asked for a ChatGPT + Claude plugin for c0mpute hosting (cloud.killer.pit.world). This makes
https://c0mpute.com/api/mcpaddable as a ChatGPT app / claude.ai custom connector / Claude Code plugin, and lets someone with no node publish through a shared house node.c0k_key labelled<app> (OAuth)./api/mcp401 now carriesWWW-Authenticate: Bearer resource_metadata=....C0MPUTE_CLOUD_NODE_ID:--disks free, inline text only, names first-come across accounts, 5 sites/account. Unset = no change.docs/mcp-connectors.md.Tests (run on vienna, not dev2): push + oauth suites 26/26; full web suite 77 pass, 1 fail (
chat music > node progress, fails on master too).🤖 Generated with Claude Code