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Reply.io exposes one sales-engagement platform through four access layers. They share the same account, the same API key, the same object model, and the same rate limits — pick the surface that fits how you (or your agent) work.

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Pick your surface

REST API

The exhaustive surface. Every endpoint, schema, and webhook — for production integrations.

MCP

70 annotated tools for MCP clients — Claude, Cursor, and custom agents.

CLI

reply in your terminal — sign in once, then call any v3 endpoint as yourself.

Skills

Outbound expertise and guardrails as markdown skill packs for your AI assistant.
Not sure which to use? See Choose your interface.

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Go further

Guides

Task-based guides — from importing contacts to building an AI SDR.

For AI agents

Agentic capabilities, safety rules, and drop-in prompts.

OpenAPI & Postman

Download the OpenAPI spec or import the Postman collection.

Slack community

Ask questions, share feedback, and request features.