guides.postgrid.com
PostGrid provides APIs and tools for print-and-mail automation and address verification. Its products let businesses verify, standardize, and autocomplete addresses and programmatically send physical mail such as letters, postcards, and cheques.
PostGrid exposes one documented REST API at `https://api.postgrid.com`, described by an OpenAPI document on `guides.postgrid.com`, and authenticated with an `x-api-key` header; no GraphQL, MCP server, or standalone CLI was documented on this domain.
- PostGrid APIdiscovered
Sign up in the PostGrid dashboard, then create or copy a key from the dashboard. For Address Verification, go to Developers and click “Create new access key”; choose the key type you need (public for the prebuilt website integration, secret for server-side and batch verification). For Print & Mail, sign in to the Print & Mail dashboard and open the Settings page to copy your test and live API keys. Send the key in the x-api-key header.
conventions · 1/8 published
- integrations.json✗
/.well-known/integrations.json - llms.txt✓https://guides.postgrid.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✗
/.well-known/oauth-protected-resource - Agent card✗
/.well-known/agent-card.json - Agent skills✗
/.well-known/agent-skills/index.json
Publish these signals → /publishing