rebilly.com
Rebilly provides payment orchestration, subscription billing, KYC, and related transaction workflows for merchants. Its platform lets businesses manage payments, customer billing, risk, and integrations through hosted and API-based tools.
Rebilly exposes a REST API for payments/billing operations and an MCP server; the REST API supports secret API keys, JWTs, and limited publishable-key use, while the MCP server uses OAuth 2.0 with dynamic client registration.
- Rebilly MCP serverdiscovered
- Rebilly REST APIdiscovered
In the Rebilly app, go to API keys. Under Automations → Development → API keys, click Create API key, choose Secret, save it, then copy the key from the Key column. The API docs say server-side requests use the secret key in the REB-APIKEY header, and requests should include the organization in the URL path such as /organizations/{organizationId}/....
Rebilly's OpenAPI description lists JWT as a supported authentication method for the REST API, describing it as a short-lifetime token with a specific expiration time. The public docs scraped here do not show a self-service minting flow for developers, so use the Rebilly developer docs and account/app features to obtain or issue a JWT for your integration as supported by your account.
For the Rebilly MCP server, register an OAuth client at dynamic client registration, then run the OAuth flow against the MCP OAuth endpoints. The detected endpoints are authorization at https://www.rebilly.com/_mcp/oauth2/auth and token at https://www.rebilly.com/_mcp/oauth2/token-portal, with scopes including openid, profile, email, and offline_access.
conventions · 2/8 published
- integrations.json✗
/.well-known/integrations.json - llms.txt✓https://rebilly.com/llms.txt
- API catalog✗
/.well-known/api-catalog - OpenAPI document✗
/api/schema/, /openapi.json, /swagger.json, /api/openapi.json, or /v1/openapi.json - MCP server card✗
/.well-known/mcp/server-card.json - OAuth protected resource✓https://rebilly.com/.well-known/oauth-protected-resource
- Agent card✗
/.well-known/agent-card.json - Agent skills✗
/.well-known/agent-skills/index.json
Publish these signals → /publishing