primer.io
Primer is a payment orchestration platform that lets merchants connect processors, payment methods, and related services through a unified payments infrastructure. It provides checkout, payment routing, vaulting, observability, and webhook-driven payment lifecycle features.
Primer exposes a documented HTTP API for client sessions, payments, and saved payment methods, authenticated with a Primer-issued API key; no public GraphQL API, MCP server, or CLI was found.
- Primer APIdiscovered
In the Primer Dashboard Developers API Keys page, generate an API key and assign the scopes needed for your integration, such as client_tokens:write, transactions:authorize, transactions:read, transactions:capture, transactions:cancel, transactions:refund, payment_instrument:read, or payment_instrument:write. The broader Authentication docs explain key management and scopes. Keep the key server-side and send it in the X-Api-Key header.
conventions · 1/8 published
- integrations.json✗
/.well-known/integrations.json - llms.txt✓https://primer.io/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