# FaxFair (remote · api.faxfair.com)

Fax API and MCP server for AI agents. Fax US and Canada, pay per request with x402. No account.

- Trust score: 61/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-04

## Components

- remote · `api.faxfair.com`: 61/100 (this document), [markdown](https://verifymcp.io/servers/nico02138-ops-faxfair/api.md), [page](https://verifymcp.io/servers/nico02138-ops-faxfair/api)

## Channel facts

- Endpoint: `https://api.faxfair.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.1`

## 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 2026-11-04.

- **Endpoint Security**: 57/100
  - 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 3 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 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**: 75/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 416 tokens (~138/item across 3 items; 3 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **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**: 75/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - 0 of 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "send_fax" implies "send" and declares no destructiveHint at all, which the MCP spec reads as destructive by default.
  - An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.

## Install

### How do I install the FaxFair MCP server?

FaxFair is a hosted endpoint at https://api.faxfair.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 nico02138-ops-faxfair 'https://api.faxfair.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "nico02138-ops-faxfair": {
      "url": "https://api.faxfair.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "nico02138-ops-faxfair": {
      "type": "http",
      "url": "https://api.faxfair.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.nico02138-ops-faxfair]
url = "https://api.faxfair.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "nico02138-ops-faxfair": {
      "type": "remote",
      "url": "https://api.faxfair.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add nico02138-ops-faxfair --url 'https://api.faxfair.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  nico02138-ops-faxfair:
    url: "https://api.faxfair.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "nico02138-ops-faxfair": {
      "Transport": "http",
      "Url": "https://api.faxfair.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add nico02138-ops-faxfair -t streamable-http -u 'https://api.faxfair.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "nico02138-ops-faxfair": {
      "type": "http",
      "url": "https://api.faxfair.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.

### 2026-11-04 (score 61)

First indexed and scored.

## MCP tools (3)

### `quote_fax` (~115 tokens)

Price one fax to a US or Canadian number before sending it. Returns both tiers: standard and priority, in cents and in USDC atomic units. Does not send the fax and does not charge.

Input parameters:

- `pages` (integer, required): How many pages the PDF has.
- `payer` (string): Wallet address, if it has credit from a failed fax.
- `priority` (boolean): true to price the priority tier. The reply always lists both tiers.
- `to` (string, required): Fax number in the United States or Canada.

### `send_fax` (~172 tokens)

Send a PDF to a US or Canadian fax number. Pass an https pdf_url. Pay with Authorization: Bearer and a prepaid API key, or with the x402 PAYMENT-SIGNATURE header. priority true uses the priority price and is sent before other agent faxes. A website or app fax is still sent first. If neither payment is present the call answers 402 with both prices.

Input parameters:

- `idempotency_key` (string): 8 to 64 letters, digits, hyphens or underscores. Retries return the same fax.
- `pdf_url` (string, required): https link to the PDF.
- `priority` (boolean): true: priority price, sent before other agent faxes. Omit for the standard price.
- `to` (string, required): Fax number in the United States or Canada.

### `get_fax_status` (~45 tokens)

Read one fax by id. Status is queued, sending, delivered or failed. Does not charge.

Input parameters:

- `fax_id` (string, required): The id returned by send_fax.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/nico02138-ops-faxfair/api#diagnostics

## Score history

- 2026-11-04: 61

## Common questions

### What is the FaxFair MCP server?

FaxFair is an MCP server listed in the public MCP registry as io.github.nico02138-ops/faxfair. Fax API and MCP server for AI agents. Fax US and Canada, pay per request with x402. No account. This page covers its hosted endpoint (https://api.faxfair.com/mcp).

### Is the FaxFair MCP server safe to use?

FaxFair scores 61 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 FaxFair MCP server expose?

FaxFair exposes 3 tools: quote_fax, send_fax, get_fax_status. Their descriptions and schemas cost roughly 332 tokens of context every time the server is loaded.

### Does the FaxFair MCP server require authentication?

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

### Is the FaxFair MCP server still maintained?

FaxFair is still listed as active in the MCP registry. We last reached this channel on 4 November 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://api.faxfair.com/mcp
- Repository: https://github.com/nico02138-ops/faxwell
- Changelog RSS feed: https://verifymcp.io/servers/nico02138-ops-faxfair/api.xml
- Changelog JSON feed: https://verifymcp.io/servers/nico02138-ops-faxfair/api.json
- HTML version of this page: https://verifymcp.io/servers/nico02138-ops-faxfair/api