Install Agent Callback Mailbox in Claude Code
claude mcp add --transport http agent-callback-mailbox https://callbacks.inversolabs.us/mcp{
"mcpServers": {
"agent-callback-mailbox": {
"url": "https://callbacks.inversolabs.us/mcp"
}
}
}Frequently asked questions
What does the Agent Callback Mailbox MCP server do?
Paid replay-safe callback inboxes for asynchronous agent tasks with structured MCP results.
Is the Agent Callback Mailbox MCP server free?
The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.
Does Agent Callback Mailbox run locally or remotely?
Remote. Hosted by the provider. You connect with a URL, nothing to install.
How do I add Agent Callback Mailbox to Claude Code?
Run: claude mcp add --transport http agent-callback-mailbox https://callbacks.inversolabs.us/mcp
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