# Insumer MCP server

> Enables AI agents to verify on-chain conditions across 37 blockchains using ECDSA-signed boolean attestations without exposing wallet balances.

- Repository: https://github.com/insumerapi/mcp-server-insumer
- Page: https://hostedmcp.org/servers/insumerapi/insumer
- Transport: stdio
- Stars: 2
- License: MIT
- Latest version: 1.14.0

## Install

### Claude Code

```sh
claude mcp add --env 'INSUMER_API_KEY=<YOUR_INSUMER_API_KEY>' --env 'INSUMER_PAYMENT_KEY=<YOUR_INSUMER_PAYMENT_KEY>' insumer -- npx -y mcp-server-insumer
```

### Cursor (`~/.cursor/mcp.json`)

```json
{
  "mcpServers": {
    "insumer": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-server-insumer"
      ],
      "env": {
        "INSUMER_API_KEY": "<YOUR_INSUMER_API_KEY>",
        "INSUMER_PAYMENT_KEY": "<YOUR_INSUMER_PAYMENT_KEY>"
      }
    }
  }
}
```

### VS Code (`.vscode/mcp.json`)

```json
{
  "servers": {
    "insumer": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "mcp-server-insumer"
      ],
      "env": {
        "INSUMER_API_KEY": "<YOUR_INSUMER_API_KEY>",
        "INSUMER_PAYMENT_KEY": "<YOUR_INSUMER_PAYMENT_KEY>"
      }
    }
  }
}
```

### VS Code CLI

```sh
code --add-mcp '{"name":"insumer","type":"stdio","command":"npx","args":["-y","mcp-server-insumer"],"env":{"INSUMER_API_KEY":"<YOUR_INSUMER_API_KEY>","INSUMER_PAYMENT_KEY":"<YOUR_INSUMER_PAYMENT_KEY>"}}'
```

### Claude Desktop (`claude_desktop_config.json`)

```json
{
  "mcpServers": {
    "insumer": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-server-insumer"
      ],
      "env": {
        "INSUMER_API_KEY": "<YOUR_INSUMER_API_KEY>",
        "INSUMER_PAYMENT_KEY": "<YOUR_INSUMER_PAYMENT_KEY>"
      }
    }
  }
}
```

### Codex

```sh
codex mcp add insumer --env 'INSUMER_API_KEY=<YOUR_INSUMER_API_KEY>' --env 'INSUMER_PAYMENT_KEY=<YOUR_INSUMER_PAYMENT_KEY>' -- npx -y mcp-server-insumer
```

### Codex config.toml (`~/.codex/config.toml`)

```toml
[mcp_servers.insumer]
command = "npx"
args = ["-y", "mcp-server-insumer"]

[mcp_servers.insumer.env]
INSUMER_API_KEY = "<YOUR_INSUMER_API_KEY>"
INSUMER_PAYMENT_KEY = "<YOUR_INSUMER_PAYMENT_KEY>"
```

### Gemini CLI

```sh
gemini mcp add -s user -e 'INSUMER_API_KEY=<YOUR_INSUMER_API_KEY>' -e 'INSUMER_PAYMENT_KEY=<YOUR_INSUMER_PAYMENT_KEY>' insumer npx -- -y mcp-server-insumer
```

### Gemini settings.json (`~/.gemini/settings.json`)

```json
{
  "mcpServers": {
    "insumer": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-server-insumer"
      ],
      "env": {
        "INSUMER_API_KEY": "<YOUR_INSUMER_API_KEY>",
        "INSUMER_PAYMENT_KEY": "<YOUR_INSUMER_PAYMENT_KEY>"
      }
    }
  }
}
```

## Environment variables

| Name | Required | Secret | Description |
|---|---|---|---|
| `INSUMER_API_KEY` | no | yes | InsumerAPI key (starts with insr_live_). Either this or INSUMER_PAYMENT_KEY. |
| `INSUMER_PAYMENT_KEY` | no | yes | Private key of a throwaway Base wallet holding a little USDC, for pay-per-call via x402 when no API key is set. Each quote is checked before signing. |
| `INSUMER_MAX_PAYMENT_USDC` | no | no | Most USDC the server will pay for one call in pay-per-call mode (default 3). |

## Tools (27)

- `insumer_setup`
- `insumer_jwks`
- `insumer_attest`
- `insumer_compliance_templates`
- `insumer_wallet_trust`
- `insumer_batch_wallet_trust`
- `insumer_verify`
- `insumer_list_merchants`
- `insumer_get_merchant`
- `insumer_list_tokens`
- `insumer_check_discount`
- `insumer_buy_key`
- `insumer_credits`
- `insumer_buy_credits`
- `insumer_confirm_payment`
- `insumer_create_merchant`
- `insumer_merchant_status`
- `insumer_configure_tokens`
- `insumer_configure_nfts`
- `insumer_configure_settings`
- `insumer_publish_directory`
- `insumer_buy_merchant_credits`
- `insumer_request_domain_verification`
- `insumer_verify_domain`
- `insumer_acp_discount`
- `insumer_ucp_discount`
- `insumer_validate_code`

## FAQ

### How do I get an API key?

You can generate a free key instantly by calling the `insumer_setup` tool with your email, using a curl command, or entering your email on their website.

### Can I use this without an API key?

Yes, you can use a Base wallet funded with USDC via the `INSUMER_PAYMENT_KEY` environment variable to pay per call using x402.

### Is the verification secure against quantum computing?

Yes, the server provides both classical ECDSA signatures and post-quantum ML-DSA-65 signatures.