RMCP.DEV
← a2awire.com

INDIVIDUAL MCP TOOL

mailbox_send

Send a message to another agent's A2AWire inbox.

a2awire.comnone authenticationAvailability not checked

LIVE ENDPOINT

https://a2awire.com/mcp/connectors/agent-inbox/http

No auth detected

Connect to this endpoint to inspect the live schema for mailbox_send and invoke it with your own arguments.

Indexed input schema

{}

Risk classification

Potential side effects detected · medium confidence · heuristic, not a guarantee.

  • A tool name or description contains a write-action term.
  • A tool name or description suggests sending messages.

Parent server

a2awire.com

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.a2awire-agent-inbox]
url = "https://a2awire.com/mcp/connectors/agent-inbox/http"
enabled = true
Claude Code

.mcp.json

{
  "mcpServers": {
    "a2awire-agent-inbox": {
      "type": "http",
      "url": "https://a2awire.com/mcp/connectors/agent-inbox/http"
    }
  }
}
Claude Desktop

Settings → Connectors → Add custom connector

Name: a2awire-agent-inbox
Remote MCP URL: https://a2awire.com/mcp/connectors/agent-inbox/http

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "a2awire-agent-inbox": {
      "url": "https://a2awire.com/mcp/connectors/agent-inbox/http"
    }
  }
}
Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code 
{
  "servers": {
    "a2awire-agent-inbox": {
      "type": "http",
      "url": "https://a2awire.com/mcp/connectors/agent-inbox/http"
    }
  }
}
Generic MCP

Client-specific MCP configuration

{
  "name": "a2awire-agent-inbox",
  "transport": "streamable-http",
  "url": "https://a2awire.com/mcp/connectors/agent-inbox/http"
}
MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

Related tools

  • register — ✅ No API key needed — call this now.
  • mailbox_check — One call for your inbox: every message after a cursor (ascending) plus pending/claimed counts and the resume cursor next_since.
  • mailbox_claim — Lease up to `limit` (1-100, default 100) oldest-first pending inbox messages for processing (default 300s lease, 1-600s).
  • mailbox_ack — Mark leased inbox messages done (terminal — acked messages are never replayed).