MCP server that exposes AgentSIM OTP session tools to AI coding assistants: Claude Code, Cursor, Windsurf, and any other MCP-compatible host.
Most developer tooling work still happens through a UI a human drives. Agentsim MCP MCP server moves it into the conversation instead. MCP server that exposes AgentSIM OTP session tools to AI coding assistants: Claude Code, Cursor, Windsurf, and any other MCP-compatible host.
The server publishes 5 tools. What each one is for:
provision_number — Provision a temporary programmable US number for an OTP session — returns number, session ID, expirywait_for_otp — Long-poll until an OTP arrives on the session (returns parsed code)get_messages — List raw SMS messages received on a sessionrelease_number — Release a session early (number returned to pool)list_numbers — List all active sessions for this accountBecause this one is hosted, setup is mostly authentication — you point your client at the endpoint and approve access. Nothing runs on your machine, so there is no runtime to keep patched.
Configuration is passed through the environment: AGENTSIM_API_KEY. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
Among the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Agentsim MCP's toolset — provision_number, wait_for_otp, get_messages and 2 more — is a fair guide to whether it matches your workflow. It is maintained by agentsimdev; worth a glance at recent repository activity before you build anything load-bearing on it.
This entry was verified against Agentsim MCP's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.
| Tool | What it does |
|---|---|
| provision_number | Provision a temporary programmable US number for an OTP session — returns number, session ID, expiry |
| wait_for_otp | Long-poll until an OTP arrives on the session (returns parsed code) |
| get_messages | List raw SMS messages received on a session |
| release_number | Release a session early (number returned to pool) |
| list_numbers | List all active sessions for this account |
{
"mcpServers": {
"agentsim": {
"command": "uvx",
"args": ["agentsim-mcp"],
"env": {
"AGENTSIM_API_KEY": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| AGENTSIM_API_KEY | Credential the server authenticates with. | Yes |
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