killbill.io
Kill Bill is an open-source subscription billing and payment platform. It supports recurring billing, payments, catalogs, tenants, and related back-office operations, typically deployed in a customer's own infrastructure.
Kill Bill exposes a self-hosted REST API for billing and payments, plus a Go-based kbcli CLI; no public GraphQL API or MCP server was found.
- Kill Bill REST APIdiscovered
- kbclidiscovered
Kill Bill is typically self-hosted. An administrator configures the initial API user in the server shiro.ini file, then can create additional users via the Kill Bill security APIs as described in Users, Roles & Permissions. Use the username and password for HTTP Basic auth.
Create or obtain a tenant's apiKey and apiSecret. The docs show creating a tenant with POST /1.0/kb/tenants and a body containing {"apiKey": "...", "apiSecret": "..."} in Users, Roles & Permissions. These values are then sent on each API request as the X-Killbill-ApiKey and X-Killbill-ApiSecret headers.
conventions · 0/7 published
- integrations.json——
- llms.txt✗
/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✗
/.well-known/oauth-protected-resource - Agent card✗
/.well-known/agent-card.json - Agent skills✗
/.well-known/agent-skills/index.json
Publish these signals → /publishing