# call402 — x402 Agent Services (remote · call402.com)

x402 pay-per-call APIs for agents: web search, wallet/token checks, text structuring.

- Trust score: 56/100 (low)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-22

## Components

- remote · `call402.com`: 56/100 (this document), [markdown](https://verifymcp.io/servers/lgs1520-call402/call402.md), [page](https://verifymcp.io/servers/lgs1520-call402/call402)

## Channel facts

- Endpoint: `https://call402.com/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 2026-10-22.

- **Endpoint Security**: 46/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 12 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS enforcement could not be verified: the plaintext port answered with HTTP 404, which proves neither a plaintext path nor enforcement.
  - 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**: 68/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 1053 tokens (~87/item across 12 items; 12 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability check failed: schema churn in the 3 days we've observed: 7 tool removals, 0 breaking changes, 0 auth/transport breaks, 9 additions.
- **Tool Coverage**: 67/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% 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 12 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 12 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the call402 — x402 Agent Services MCP server?

call402 — x402 Agent Services is a hosted endpoint at https://call402.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 lgs1520-call402 'https://call402.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "lgs1520-call402": {
      "url": "https://call402.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "lgs1520-call402": {
      "type": "http",
      "url": "https://call402.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.lgs1520-call402]
url = "https://call402.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "lgs1520-call402": {
      "type": "remote",
      "url": "https://call402.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add lgs1520-call402 --url 'https://call402.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  lgs1520-call402:
    url: "https://call402.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "lgs1520-call402": {
      "Transport": "http",
      "Url": "https://call402.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add lgs1520-call402 -t streamable-http -u 'https://call402.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "lgs1520-call402": {
      "type": "http",
      "url": "https://call402.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.

### 2026-10-22 (score 56, 0)

- [functional improvement] Schema quality: 99 → 87
- [functional] New tool “hash-tools”
- [functional] New tool “language-detect”
- [functional] New tool “sec-company-facts”
- [functional] New tool “timestamp-convert”

### 2026-10-21 (score 56, 0)

- [security regression] A breaking change shipped without a version bump: still 1.0.0
- [security regression] Tool “token-quotes” was removed
- [security regression] Tool “token-risk-summary” was removed
- [security regression] Tool “trending-pools” was removed
- [security regression] Tool “wallet-activity-summary” was removed
- [security regression] Tool “weather” was removed
- [security] Tool “fx-rates” rewrote its description, which is the text the model reads
- [functional improvement] Schema quality: 110 → 99
- [functional] New tool “domain-lookup”
- [functional] New tool “fear-greed-index”
- [functional] New tool “qr-code”
- [functional] New tool “ssl-check”
- [functional] New tool “text-extract”

### 2026-10-20 (score 56, 0)

- [security regression] Stability: unverified → fail
- [security regression] A breaking change shipped without a version bump: still 1.0.0
- [security regression] Tool “web-answer” was removed
- [security regression] Tool “web-search” was removed
- [functional improvement] Schema quality: 1088 → 884

### 2026-10-19 (score 56)

First indexed and scored.

## MCP tools (12)

### `text-to-structure` (~122 tokens)

Turn unstructured text into strict, machine-readable JSON for agent pipelines: a deterministic, reproducible alternative to an LLM extraction call. Extracts emails, URLs, EVM wallet addresses, transaction hashes, ISO-normalized dates, money amounts, percentages, phone numbers and key:value pairs from invoices, emails, messages, logs or documents. Pass fields or a JSON schema to receive exactly the fields you need. Same input, same output, in milliseconds.

Input parameters:

- `fields` (array)
- `schema` (object)
- `text` (string, required)

### `fx-rates` (~134 tokens)

Daily foreign-exchange reference rates for the major fiat currencies (USD, EUR, CNY, GBP, JPY, HKD and more) from the European Central Bank via Frankfurter: convert amounts, price in a local currency, or sanity-check a rate before a payment. Give a base currency and optional symbols and amount. Reference rates are published once per working day; they are not live trading quotes. Source: ECB statistics via Frankfurter; the same reference rates are published free of charge by the European Central

Input parameters:

- `amount` (number)
- `base` (string)
- `symbols` (array)

### `email-verify` (~94 tokens)

Email address validation for signup screening, lead cleanup and form verification: syntax check, disposable/temporary-domain detection and a live MX-record lookup for the domain. Returns a deliverability verdict (likely_deliverable, risky, undeliverable, invalid_format) with the MX hosts found. Does not probe individual mailboxes, so catch-all domains may still accept addresses that do not exist.

Input parameters:

- `email` (string, required)

### `fear-greed-index` (~102 tokens)

Crypto Fear & Greed Index by alternative.me: current value (0-100) and classification (Extreme Fear, Fear, Neutral, Greed, Extreme Greed) plus optional daily history. The most-cited single market-sentiment gauge for crypto trading agents: position sizing, risk checks and regime detection before trading. Data published by alternative.me for free commercial use with attribution; served from a 30-minute cache.

Input parameters:

- `limit` (integer)

### `text-extract` (~88 tokens)

Extract the readable main content of any public web page as clean text: send a URL, get the page title, excerpt and body text with navigation, ads and boilerplate stripped (Mozilla Readability, computed on our own servers). For RAG ingestion, summarization, research and page monitoring. First-party extraction: no third-party reader service is resold.

Input parameters:

- `url` (string, required)

### `ssl-check` (~77 tokens)

TLS/SSL certificate check for any public host: issuer, subject, SAN list, validity window, days until expiry, SHA-256 fingerprint and whether the certificate chain verified. Computed by a direct TLS handshake from our own servers. For uptime and security monitoring agents, vendor endpoint checks and integration pre-flight.

Input parameters:

- `host` (string, required)

### `domain-lookup` (~91 tokens)

Domain one-stop lookup: live DNS records (A, AAAA, CNAME, MX, NS, TXT via DNS-over-HTTPS) plus RDAP registration data (registrar, creation and expiry dates, status, nameservers) assembled from public protocol endpoints on our servers. For domain due diligence, phishing-site checks, counterparty infrastructure review and integration pre-checks.

Input parameters:

- `domain` (string, required)

### `qr-code` (~86 tokens)

Generate a QR code image for any text, URL or payment address: returns SVG markup or a base64-encoded PNG rendered on our own servers (qrcode library, MIT). For agents that produce scannable payment requests, links, addresses or tickets but cannot render images themselves.

Input parameters:

- `format` (string)
- `size` (integer)
- `text` (string, required)

### `sec-company-facts` (~85 tokens)

Summarize a US public company's latest SEC-reported Revenue, NetIncomeLoss and Assets from official EDGAR companyfacts. Look up by ticker, CIK or company name; returns filing dates and fiscal periods. Uses SEC public-domain data with a declared User-Agent.

Input parameters:

- `cik` (string)
- `name` (string)
- `ticker` (string)

### `language-detect` (~69 tokens)

Detect the most likely language of text entirely on this server, with ISO 639-1 language code, language name, confidence and alternatives. Supports English, Chinese, Japanese, Korean, Spanish, French, German, Russian, Portuguese and Italian; no upstream request.

Input parameters:

- `text` (string, required)

### `timestamp-convert` (~49 tokens)

Convert Unix seconds, Unix milliseconds or an ISO date to UTC and Asia/Shanghai timestamps. An empty object returns the current time.

Input parameters:

- `date` (string)
- `timestamp` (number)

### `hash-tools` (~56 tokens)

Run local cryptographic utilities: SHA-256 and SHA-512 hashes, Base64 encode/decode, or a random UUID v4. No upstream service is called.

Input parameters:

- `op` (string)
- `text` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/lgs1520-call402/call402#diagnostics

## Score history

- 2026-10-22: 56
- 2026-10-21: 56
- 2026-10-20: 56
- 2026-10-19: 56

## Common questions

### What is the call402 — x402 Agent Services MCP server?

call402 — x402 Agent Services is an MCP server listed in the public MCP registry as io.github.lgs1520/call402. x402 pay-per-call APIs for agents: web search, wallet/token checks, text structuring. This page covers its hosted endpoint (https://call402.com/mcp).

### Is the call402 — x402 Agent Services MCP server safe to use?

call402 — x402 Agent Services scores 56 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 call402 — x402 Agent Services MCP server expose?

call402 — x402 Agent Services exposes 12 tools: text-to-structure, fx-rates, email-verify, fear-greed-index, text-extract, and 7 more. Their descriptions and schemas cost roughly 1,053 tokens of context every time the server is loaded.

### Does the call402 — x402 Agent Services MCP server require authentication?

No. We connected to call402 — x402 Agent Services without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the call402 — x402 Agent Services MCP server still maintained?

call402 — x402 Agent Services is still listed as active in the MCP registry. We last reached this channel on 22 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://call402.com/mcp
- Website: https://call402.com/
- Changelog RSS feed: https://verifymcp.io/servers/lgs1520-call402/call402.xml
- Changelog JSON feed: https://verifymcp.io/servers/lgs1520-call402/call402.json
- HTML version of this page: https://verifymcp.io/servers/lgs1520-call402/call402