# AgentPay x402 Facilitator (remote · x402-agent-pay.com)

Verify signed x402 payments; treasury-scoped settlement is irreversible.

- Trust score: 73/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-24

> **Recent critical change**: Authorization (2026-10-05). See the changelog below before you install this server.

## Components

- remote · `x402-agent-pay.com`: 73/100 (this document), [markdown](https://verifymcp.io/servers/com-x402-agent-pay-facilitator/facilitator-mcp.md), [page](https://verifymcp.io/servers/com-x402-agent-pay-facilitator/facilitator-mcp)

## Channel facts

- Endpoint: `https://x402-agent-pay.com/facilitator/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## 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 2026-10-24.

- **Endpoint Security**: 57/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (x402_facilitator_settle).
  - 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**: 61/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 628 tokens (~314/item across 2 items; 2 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 80/100
  - Stability observed for 24 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.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the AgentPay x402 Facilitator MCP server?

AgentPay x402 Facilitator is a hosted endpoint at https://x402-agent-pay.com/facilitator/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 com-x402-agent-pay-facilitator 'https://x402-agent-pay.com/facilitator/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-x402-agent-pay-facilitator": {
      "url": "https://x402-agent-pay.com/facilitator/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-x402-agent-pay-facilitator": {
      "type": "http",
      "url": "https://x402-agent-pay.com/facilitator/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-x402-agent-pay-facilitator]
url = "https://x402-agent-pay.com/facilitator/mcp"
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add com-x402-agent-pay-facilitator --url 'https://x402-agent-pay.com/facilitator/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-x402-agent-pay-facilitator:
    url: "https://x402-agent-pay.com/facilitator/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-x402-agent-pay-facilitator": {
      "Transport": "http",
      "Url": "https://x402-agent-pay.com/facilitator/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-x402-agent-pay-facilitator -t streamable-http -u 'https://x402-agent-pay.com/facilitator/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-x402-agent-pay-facilitator": {
      "type": "http",
      "url": "https://x402-agent-pay.com/facilitator/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.

### 2026-10-23 (score 73, +1)

No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-21 (score 72, +1)

No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-19 (score 71, +1)

No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-17 (score 70, +1)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-15 (score 69, +1)

No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-13 (score 68, +1)

No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-11 (score 67, +1)

No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-08 (score 66, +2)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 27. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (2)

### `x402_facilitator_verify` (~161 tokens)

Verify an x402 payment without moving funds

Forward an x402 payment envelope to POST https://x402-agent-pay.com/facilitator/verify. Recovers the EIP-712 signer, checks payee/amount/expiry/nonce/USDC balance and spend authority. Free. No gas. No broadcast. Returns isValid plus invalidReason when the payload cannot clear. Authorization still lives in the existing facilitator implementation; this tool only forwards the JSON body.

Input parameters:

- `body` (object, required): Exact envelope accepted by POST /facilitator/verify and /facilitator/settle. The live Flask unpacker is liberal (v1/v2 names). This schema documents the supported request body and still forwards ext…

### `x402_facilitator_settle` (~255 tokens)

Settle an x402 payment on-chain (irreversible)

IRREVERSIBLE SIDE EFFECT: forwards the envelope to POST https://x402-agent-pay.com/facilitator/settle. The existing facilitator first re-runs verify(), then refuses PAYEE_NOT_SERVED_HERE unless payTo is the AgentPay treasury (0x367F1b3D8Ca90D1e087481a9A40d585Bf3451a03 on Base / 6aCEuwH3PYx99cEmRz45otfxk39uF7ewGhqmvxfXisSG on Solana), then broadcasts via Coinbase CDP and returns a transaction hash. Malformed, unsigned, out-of-scope, or unverified payloads are rejected before any external transfer. This adapter never signs, never holds keys, and never bypasses those gates. Do not call this as a dry run.

Input parameters:

- `body` (object, required): Exact envelope accepted by POST /facilitator/verify and /facilitator/settle. The live Flask unpacker is liberal (v1/v2 names). This schema documents the supported request body and still forwards ext…

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-x402-agent-pay-facilitator/facilitator-mcp#diagnostics

## Score history

- 2026-10-24: 73
- 2026-10-23: 73
- 2026-10-22: 72
- 2026-10-21: 72
- 2026-10-20: 71
- 2026-10-19: 71
- 2026-10-18: 70
- 2026-10-17: 70
- 2026-10-16: 69
- 2026-10-15: 69
- 2026-10-14: 68
- 2026-10-13: 68
- 2026-10-12: 67
- 2026-10-11: 67
- 2026-10-10: 66
- 2026-10-08: 66
- 2026-10-05: 64
- 2026-10-04: 23
- 2026-10-03: 23
- 2026-10-02: 63
- 2026-10-01: 62
- 2026-09-30: 62

## Common questions

### What is the AgentPay x402 Facilitator MCP server?

AgentPay x402 Facilitator is an MCP server listed in the public MCP registry as com.x402-agent-pay/facilitator. Verify signed x402 payments; treasury-scoped settlement is irreversible. This page covers its hosted endpoint (https://x402-agent-pay.com/facilitator/mcp).

### Is the AgentPay x402 Facilitator MCP server safe to use?

AgentPay x402 Facilitator scores 73 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 AgentPay x402 Facilitator MCP server expose?

AgentPay x402 Facilitator exposes 2 tools: x402_facilitator_verify, x402_facilitator_settle. Their descriptions and schemas cost roughly 416 tokens of context every time the server is loaded.

### Does the AgentPay x402 Facilitator MCP server require authentication?

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

### Is the AgentPay x402 Facilitator MCP server still maintained?

AgentPay x402 Facilitator is still listed as active in the MCP registry. We last reached this channel on 24 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-pay.com/facilitator/mcp
- Website: https://x402-agent-pay.com/facilitator.html
- Changelog RSS feed: https://verifymcp.io/servers/com-x402-agent-pay-facilitator/facilitator-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-x402-agent-pay-facilitator/facilitator-mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-x402-agent-pay-facilitator/facilitator-mcp