# x402 Agent Tollbooth (remote · x402-agent-tollbooth.onrender.com)

On-chain DeFi smart contract auditor, arbitrage scanner, and agent tollbooth via x402 on Base.

- Trust score: 67/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-18

## Components

- remote · `x402-agent-tollbooth.onrender.com`: 67/100 (this document), [markdown](https://verifymcp.io/servers/ak10082247-max-x402-agent-tollbooth/x402-agent-tollbooth.md), [page](https://verifymcp.io/servers/ak10082247-max-x402-agent-tollbooth/x402-agent-tollbooth)

## Channel facts

- Endpoint: `https://x402-agent-tollbooth.onrender.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `2.1.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-18.

- **Endpoint Security**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 70/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 307 tokens (~76/item across 4 items; 4 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 3/100
  - Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 20/100
  - Spec-recency check failed: implements MCP spec 2024-11-05; the latest is 2026-07-28.

## Install

### How do I install the x402 Agent Tollbooth MCP server?

x402 Agent Tollbooth is a hosted endpoint at https://x402-agent-tollbooth.onrender.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http ak10082247-max-x402-agent-tollbooth 'https://x402-agent-tollbooth.onrender.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "ak10082247-max-x402-agent-tollbooth": {
      "url": "https://x402-agent-tollbooth.onrender.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "ak10082247-max-x402-agent-tollbooth": {
      "type": "http",
      "url": "https://x402-agent-tollbooth.onrender.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.ak10082247-max-x402-agent-tollbooth]
url = "https://x402-agent-tollbooth.onrender.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "ak10082247-max-x402-agent-tollbooth": {
      "type": "remote",
      "url": "https://x402-agent-tollbooth.onrender.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add ak10082247-max-x402-agent-tollbooth --url 'https://x402-agent-tollbooth.onrender.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  ak10082247-max-x402-agent-tollbooth:
    url: "https://x402-agent-tollbooth.onrender.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "ak10082247-max-x402-agent-tollbooth": {
      "Transport": "http",
      "Url": "https://x402-agent-tollbooth.onrender.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add ak10082247-max-x402-agent-tollbooth -t streamable-http -u 'https://x402-agent-tollbooth.onrender.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "ak10082247-max-x402-agent-tollbooth": {
      "type": "http",
      "url": "https://x402-agent-tollbooth.onrender.com/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-18 (score 67, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-17 (score 67, +44)

- [security improvement] Authorization: unverified → partial
- [security improvement] Injection markers: unverified → pass
- [security improvement] Transport: fail → pass
- [security] First check of Judged manipulation: pass
- [functional regression] MCP protocol: unverified → fail
- [functional improvement] Tool coverage: unverified → 100
- [functional] First check of Schema quality: fail
- [functional] First check of Destructive annotations: pass
- [functional] First check of Schema quality: pass
- [functional] First check of Schema quality: good
- [functional] First check of Tool coverage: 100

### 2026-10-15 (score 23)

First indexed and scored.

## MCP tools (4)

### `ai_intel` (~70 tokens)

Deep AI Vulnerability & Intelligence Engine. Scans contracts and code for logic vulnerabilities and exploits on Base. Cost: 0.001 USDC on Base.

Input parameters:

- `contractAddress` (string): Base smart contract address to audit
- `prompt` (string): Analysis prompt or contract source code to audit

### `arbitrage_scan` (~85 tokens)

Cross-DEX Arbitrage & Liquidity Scanner. Analyzes Uniswap, Aerodrome, and BaseSwap pools for profitable routing opportunities. Cost: 0.002 USDC on Base.

Input parameters:

- `min_spread_bps` (integer): Minimum spread in basis points
- `pair` (string): Token pair to scan, e.g. WETH/USDC

### `smart_router` (~76 tokens)

Optimal Execution Smart Router. Computes optimal gas and slippage routing paths for Base AI agents and automated executors. Cost: 0.001 USDC on Base.

Input parameters:

- `amount` (string): Trade amount
- `tokenIn` (string): Input token address or symbol
- `tokenOut` (string): Output token address or symbol

### `contract_audit` (~76 tokens)

Live Smart Contract AI Auditor. Analyzes Base contracts for vulnerabilities. Cost: 0.02 USDC via x402 protocol. Cost: 0.02 USDC on Base.

Input parameters:

- `contractAddress` (string): The Base network smart contract address to audit.
- `isPatch` (boolean): Whether to generate a patch

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/ak10082247-max-x402-agent-tollbooth/x402-agent-tollbooth#diagnostics

## Score history

- 2026-10-18: 67
- 2026-10-17: 67
- 2026-10-16: 23
- 2026-10-15: 23

## Common questions

### What is the x402 Agent Tollbooth MCP server?

x402 Agent Tollbooth is an MCP server listed in the public MCP registry as io.github.ak10082247-max/x402-agent-tollbooth. On-chain DeFi smart contract auditor, arbitrage scanner, and agent tollbooth via x402 on Base. This page covers its hosted endpoint (https://x402-agent-tollbooth.onrender.com/mcp).

### Is the x402 Agent Tollbooth MCP server safe to use?

x402 Agent Tollbooth scores 67 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the x402 Agent Tollbooth MCP server expose?

x402 Agent Tollbooth exposes 4 tools: ai_intel, arbitrage_scan, smart_router, contract_audit. Their descriptions and schemas cost roughly 307 tokens of context every time the server is loaded.

### Does the x402 Agent Tollbooth MCP server require authentication?

No. We connected to x402 Agent Tollbooth without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the x402 Agent Tollbooth MCP server still maintained?

x402 Agent Tollbooth is still listed as active in the MCP registry. We last reached this channel on 18 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://x402-agent-tollbooth.onrender.com/mcp
- Repository: https://github.com/ak10082247-max/x402-agent-tollbooth
- Website: https://x402-agent-tollbooth.onrender.com/
- Changelog RSS feed: https://verifymcp.io/servers/ak10082247-max-x402-agent-tollbooth/x402-agent-tollbooth.xml
- Changelog JSON feed: https://verifymcp.io/servers/ak10082247-max-x402-agent-tollbooth/x402-agent-tollbooth.json
- HTML version of this page: https://verifymcp.io/servers/ak10082247-max-x402-agent-tollbooth/x402-agent-tollbooth