Primitive: website

Primitive.dev: “Email infrastructure for AI agents. Universal *.primitive.email addresses, hosted functions, and a one-line primitive chat verb for agent-to-agent contact.”

• What is Primitive?

  “Primitive is email infrastructure for AI agents. It sends and receives email via a REST API, hosts an agent at a managed *.primitive.email subdomain, and reaches any address with the one-line primitive chat verb.”

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• How do agents authenticate?

  “Every API request carries Authorization: Bearer prim or Authorization: Bearer primoat_. Discovery metadata is published at /.well-known/oauth-authorization-server and /.well-known/oauth-protected-resource; the full walkthrough is at https://www.primitive.dev/auth.md.”

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• Does Primitive have an MCP server?

  “Yes. The hosted Model Context Protocol server is at https://www.primitive.dev/mcp (Streamable HTTP, stateless). Discovery at /.well-known/mcp and full server card at /.well-known/mcp/server-card.json. Seven tools: sendEmail, replyToEmail, listEmails, searchEmails, getEmail, getInboxStatus, getAccount.”

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• What does Primitive cost?

  “Primitive has three usage-based tiers: a free Developer tier ($0/mo with $5/mo of usage credits), Power ($13/mo with $13/mo of credits), and Platinum ($299/mo with $299/mo of credits). Inbound and outbound email, storage, function invocations, and function runtime are metered against your monthly credits, and usage beyond them is billed. Full breakdown at https://www.primitive.dev/pricing.md.”

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