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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "faxonline": {
      "type": "http",
      "url": "https://faxonline.app/mcp/fax"
    }
  }
}

claude mcp add --transport http faxonline https://faxonline.app/mcp/fax

[mcp_servers.faxonline]
url = "https://faxonline.app/mcp/fax"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "faxonline": {
      "type": "remote",
      "url": "https://faxonline.app/mcp/fax",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "faxonline": {
      "type": "http",
      "url": "https://faxonline.app/mcp/fax"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=faxonline&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vZmF4b25saW5lLmFwcC9tY3AvZmF4In0%3D"
}

{
  "servers": {
    "faxonline": {
      "type": "http",
      "url": "https://faxonline.app/mcp/fax"
    }
  }
}

{
  "mcpServers": {
    "faxonline": {
      "httpUrl": "https://faxonline.app/mcp/fax"
    }
  }
}

extensions:
  "faxonline":
    enabled: true
    name: "faxonline"
    type: streamable_http
    uri: "https://faxonline.app/mcp/fax"
    timeout: 300

Quality 85 / 100good

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene86 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations2 of 2 tools declare readOnlyHint or destructiveHint
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: get_fax_status (destructiveHint, idempotentHint, openWorldHint); prepare_fax (readOnlyHint, openWorldHint)
pass
tools.token_costabout 407 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changes2 tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

2 tools, about 407 tokens to load them all · tool set 56898f65074c · tools last changed 2026-10-16 · checked 2026-10-20 12:45 UTC

Tool changes

2026-10-16prepare_faxchangeddescription
before
Prepare one PDF fax and return its price and Stripe checkout link. This stores the document but does not send or charge. Completing checkout authorizes sending to the displayed recipient. Keep draft_token private and reuse it with identical inputs for retries.
after · 62% of words in common
Prepare one PDF fax and return its price and Stripe checkout link. This stores the document but does not send or charge. Completing checkout authorizes sending to the displayed recipient. fax_number must be a US fax number: 10 digits (5155551234), optionally prefixed with 1 or +1 (E.164 such as +15155551234); common formatting such as (515) 555-1234 is accepted. Keep draft_token private and reuse it with identical inputs for retries.
2026-10-09prepare_faxchangedinput schema

Full history: list_changes · trend: quality JSON.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 80 / 100

no-repository

provenance45

liveness100

freshness100

hygiene80

+website +reachable +uptime-100% +updated-11d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://faxonline.app/mcp/fax` streamable-http	none	yes	100%	475 ms	2025-11-25	2026-10-20

Tools (2)

get_fax_statusread-only Check your prepared fax using its secret draft_token. Returns payment and delivery status. A processing fax has not yet been delivered. Poll no more than once every 15 seconds.

prepare_fax Prepare one PDF fax and return its price and Stripe checkout link. This stores the document but does not send or charge. Completing checkout authorizes sending to the displayed recipient. fax_number must be a US fax number: 10 digits (5155551234), optionally prefixed with 1 or +1 (E.164 such as +15155551234); common formatting such as (515) 555-1234 is accepted. Keep draft_token private and reuse it with identical inputs for retries.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.github.abrudtkuhl/faxonline",
  "title": "FaxOnline",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://faxonline.app/mcp/fax",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.0",
  "websiteUrl": "https://faxonline.app/fax-for-ai-agents",
  "description": "Prepare and track US PDF faxes with user-approved checkout. No account or subscription."
}