C 
carbonarc.co
Carbon Arc provides a data platform focused on carbon and market data products. Its public site was in maintenance during review, but the domain publishes an admin API specification and an MCP endpoint.
Carbon Arc exposes a REST Client Admin API described by a published OpenAPI document at `/api/openapi.json`, plus an OAuth-protected MCP server at `https://mcp.carbonarc.co`.
discovered 1d ago
MCP servers1
- Carbon Arc MCP Serverdetected
REST · OpenAPI1
- Carbon Arc Client Admin APIdiscovered
Credentials
OAuth 2.0oauth2
OAuth 2.0 — self-onboarding
Point your MCP client at the server URL and approve access in the browser. The server supports OAuth Dynamic Client Registration (RFC 7591), so the client registers itself automatically — no developer-portal app, client_id, or client_secret to create.
conventions · 1/8 published
- integrations.json✗
/.well-known/integrations.json - llms.txt✗
/llms.txt - API catalog✗
/.well-known/api-catalog - OpenAPI document✓https://carbonarc.co/api/openapi.json
- MCP server card✗
/.well-known/mcp/server-card.json - OAuth protected resource✗
/.well-known/oauth-protected-resource - Agent card✗
/.well-known/agent-card.json - Agent skills✗
/.well-known/agent-skills/index.json
Publish these signals → /publishing