ChatGPT
- Protocol
- GPT Actions
- Endpoint
- https://app.replynodes.com/api/public/v1
- Authentication
- Raw API key in Authorization (no Bearer), or pos_ OAuth app token
- Setup
- ChatGPT setup →
Documentation
Everything you need to integrate ReplyNodes with your agents and workflows.
Technical details: integration evidence
ChatGPT uses GPT Actions calling the REST API. It is not an MCP client. MCP clients use the remote MCP server. API keys are created in the app at Developers → API Keys & Agents (/developers).
Claude, Claude Code, Cursor, Codex, OpenClaw, Hermes
- Protocol
- Remote MCP
- Endpoint
- https://app.replynodes.com/api/mcp
- Authentication
- Authorization: Bearer *** key, or MCP OAuth
- Setup
- MCP setup →
Applications and workflow tools
- Protocol
- REST API
- Endpoint
- https://app.replynodes.com/api/public/v1
- Authentication
- Raw API key in Authorization (no Bearer), or pos_ OAuth app token
- Setup
- REST API setup →
MCP Server Setup
Connect any MCP-capable agent to ReplyNodes in minutes.
REST API Reference
Full API documentation for building on ReplyNodes. See the API reference for verified base URL and authentication facts.
OpenAPI publication status
No speculative OpenAPI document is published. See the blocker, owning backend system, and machine-readable status.
MCP Authentication
Connect verified MCP clients with the remote server and Bearer API-key authentication.
Workflow guidance
Review the documentation for current supported agent and API workflows.
n8n Integration
Wire social media automation into your n8n workflows.
Zapier Integration
Connect ReplyNodes to thousands of apps via Zapier.
Building your own client? Read the engineering write-up on our MCP server for the design decisions behind it.