Scoped API keys
Give each app or agent only the scopes it needs. Rotate a key without changing the integration design.
Developer plans
A messaging API and MCP server for AI-era builders.
One REST API and an MCP server your agent can call. Start at 120 requests a minute for $19. Your Claude or Cursor agent can read conversations, send replies, and get webhooks when customers answer.
Send a reply with curl
curl -X POST https://api.instantreply.co/v1/conversations/$ID/messages \
-H "Authorization: Bearer $IR_API_KEY" \
-H "Content-Type: application/json" \
-d '{ "content": "Your order is on its way." }'Use a scoped API key. Test keys never deliver messages.
Plain answer
What this is, who it is for, and what it costs.
- What is it?
- A REST API and MCP server for reading conversations, sending replies, and receiving signed webhooks.
- Who is it for?
- Builders who want to connect an app, workflow, or AI agent to Instagram conversations. Pro and Scale also add Messenger.
- What does it cost?
- Developer plans cost $19, $49, or $149 per month. Every plan includes the API, MCP server, webhooks, and AI replies.
Two ways to connect
Call the API or give the tools to your agent.
The API and MCP server use the same scoped key. Use a read-only key when an agent should only inspect conversations.
REST API
curl -X POST https://api.instantreply.co/v1/conversations/$ID/messages \
-H "Authorization: Bearer $IR_API_KEY" \
-H "Content-Type: application/json" \
-d '{ "content": "Your order is on its way." }'MCP config for Claude or Cursor
{
"mcpServers": {
"instantreply": {
"command": "npx",
"args": ["-y", "@instantreply/mcp"],
"env": {
"INSTANTREPLY_API_KEY": "ir_live_YOUR_KEY_HERE"
}
}
}
}Limits that match the work
Developer plans start at $19 per month.
Choose Hobby for a small Instagram integration. Choose Pro or Scale when you need more volume, more keys, more webhooks, and Messenger.
| Plan | AI replies / month | Requests / min | Keys | Webhooks | Channels | MCP |
|---|---|---|---|---|---|---|
| Developer Hobby$19 / month | 4,000 | 120 | 2 | 3 | Full | |
| Developer Pro$49 / month | 13,000 | 600 | 5 | 10 | Instagram + Messenger | Full |
| Developer Scale$149 / month | 40,000 | 2,400 | 25 | 25 | Instagram + Messenger | Full + priority |
Built for production work
Use the same building blocks in code and in MCP.
Signed webhooks
Receive customer events at your endpoint. Verify the signature before your app processes the event.
MCP server
Connect Claude, Cursor, or another MCP client with one config block and your scoped API key.
Write controls
Use read-only keys for agents that inspect conversations. Use write scopes only when an agent should send a reply.
Questions
Developer plan answers.
- What is InstantReply for developers?
- InstantReply is a REST API and MCP server for reading conversations, sending replies, and receiving customer events through webhooks.
- Which channels are included with developer plans?
- Developer Hobby includes Instagram. Developer Pro and Developer Scale include Instagram and Messenger. WhatsApp and CRM tools are available on Business plans.
- What do developer plans cost?
- Developer Hobby costs $19 per month, Developer Pro costs $49 per month, and Developer Scale costs $149 per month. Each plan includes an MCP server, API keys, webhooks, and AI replies.
Developer lane
Choose the limits your integration needs.
Start with Developer Hobby for $19 per month. Move to Pro or Scale when your app needs more replies, API requests, keys, or webhooks.