sendgrid.com
SendGrid is an email delivery platform for transactional and marketing email, with tools for sending, analytics, deliverability, and account management. It is part of Twilio and provides APIs and related tooling for managing email operations.
SendGrid exposes HTTP APIs for email delivery/management, including a documented v3 API and a separate Email Activity (beta) API surface, plus a legacy npm-based CLI; all discovered developer surfaces require authentication.
- SendGrid v3 APIdiscovered
- Email Activity (beta) APIdiscovered
- SendGrid CLIdiscovered
In the SendGrid app, go to API keys and create an API key with the permissions your integration needs. SendGrid's API docs and quickstarts use this key in the Authorization: Bearer <API_KEY> header.
For the legacy sendgrid-cli, log in at app.sendgrid.com, open your browser developer tools, inspect cookies for https://app.sendgrid.com, and copy the mako_auth_token value as described in RETRIEVE_TOKEN.md. This token is only valid for the current browser session.
conventions · 0/8 published
- integrations.json✗
/.well-known/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