# Agentsim Mcp

> MCP server for AgentSIM — give Claude, Cursor, and Windsurf real phone numbers for OTP verification.

- **Type:** MCP server
- **Install:** `agentstack add mcp-agentsimdev-agentsim-mcp`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [agentsimdev](https://agentstack.voostack.com/s/agentsimdev)
- **Installs:** 0
- **Category:** [Communication](https://agentstack.voostack.com/c/communication)
- **Latest version:** 0.10.2
- **License:** MIT
- **Upstream author:** [agentsimdev](https://github.com/agentsimdev)
- **Source:** https://github.com/agentsimdev/agentsim-mcp
- **Website:** https://agentsim.dev

## Install

```sh
agentstack add mcp-agentsimdev-agentsim-mcp
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# agentsim-mcp

MCP server that exposes AgentSIM OTP session tools to AI coding assistants: Claude Code, Cursor, Windsurf, and any other MCP-compatible host.

## Setup

### Claude Code

```bash
claude mcp add agentsim -e AGENTSIM_API_KEY=asm_live_xxx -- uvx agentsim-mcp
```

### Claude Desktop

Add to `~/Library/Application Support/Claude/claude_desktop_config.json`:

```json
{
  "mcpServers": {
    "agentsim": {
      "command": "uvx",
      "args": ["agentsim-mcp"],
      "env": {
        "AGENTSIM_API_KEY": "asm_live_xxx"
      }
    }
  }
}
```

### Cursor / Windsurf

Add `agentsim-mcp` as a stdio MCP server with `AGENTSIM_API_KEY` in the environment config.

### Remote (no install)

Connect directly to the hosted MCP server without installing anything locally:

```json
{
  "mcpServers": {
    "agentsim": {
      "type": "streamable-http",
      "url": "https://mcp.agentsim.dev/mcp",
      "headers": {
        "x-api-key": "asm_live_..."
      }
    }
  }
}
```

## Tools

| Tool | Description |
|------|-------------|
| `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 |

## Auth

Set `AGENTSIM_API_KEY` in your environment. Get your key at [console.agentsim.dev](https://console.agentsim.dev).

## Supported Countries

US (more coming soon)

## Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [agentsimdev](https://github.com/agentsimdev)
- **Source:** [agentsimdev/agentsim-mcp](https://github.com/agentsimdev/agentsim-mcp)
- **License:** MIT
- **Homepage:** https://agentsim.dev

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.10.2 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.10.2** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/mcp-agentsimdev-agentsim-mcp
- Seller: https://agentstack.voostack.com/s/agentsimdev
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.