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Oh Fax

R0· no sign-in

Outbound US/CA fax for agents: quote PDF, pay via MPP, get delivery receipt.

v0.1.0 · active · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality88good
Trust82of 100
Uptime, 30 days94%
Latency p50507 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "ohfax": {
      "type": "http",
      "url": "https://app.ohfax.com/mcp"
    }
  }
}
claude mcp add --transport http ohfax https://app.ohfax.com/mcp
[mcp_servers.ohfax]
url = "https://app.ohfax.com/mcp"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "ohfax": {
      "type": "remote",
      "url": "https://app.ohfax.com/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "ohfax": {
      "type": "http",
      "url": "https://app.ohfax.com/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=ohfax&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYXBwLm9oZmF4LmNvbS9tY3AifQ%3D%3D"
}
{
  "servers": {
    "ohfax": {
      "type": "http",
      "url": "https://app.ohfax.com/mcp"
    }
  }
}
{
  "mcpServers": {
    "ohfax": {
      "httpUrl": "https://app.ohfax.com/mcp"
    }
  }
}
extensions:
  "ohfax":
    enabled: true
    name: "ohfax"
    type: streamable_http
    uri: "https://app.ohfax.com/mcp"
    timeout: 300

Quality 88 / 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 hygiene93 · 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.annotations4 of 4 tools declare readOnlyHint or destructiveHint
  • warn
    tools.directory_hints1 of 4 tools declare all four hints; missing: quote_fax (idempotentHint); get_fax_status (idempotentHint); get_fax_receipt (idempotentHint)
  • pass
    tools.token_costabout 536 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability100 · weight 15
  • pass
    stability.changesno 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

4 tools, about 536 tokens to load them all · tool set 8856b2634fdf · checked 2026-10-20 03:37 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

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 82 / 100

no-repository
provenance55
liveness97
freshness100
hygiene80

+dns-namespace +website +reachable +uptime-94% +updated-29d-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

remoteauthreachableuptime 30dp50protocollast ok
https://app.ohfax.com/mcp streamable-httpnoneyes94%507 ms2025-11-252026-10-20

Tools (4)

get_fax_receiptread-onlyVerifiable delivery receipt for a completed fax. Available once the fax has reached a final state. Use this to prove the workflow finished.
get_fax_statusread-onlyCurrent delivery state of a fax: awaiting_payment, paid, submitted, sending, delivered, or failed. Failed faxes include a reason you can act on.
quote_faxread-onlyPrice a fax before committing to anything. Validates the destination and the document, counts pages, and returns an exact total plus a payment link. Free, and sends nothing. Always call this before send_fax.
send_faxdestructiveReturns the authorization instructions for sending a previously quoted fax. THIS ACTION COSTS MONEY AND CANNOT BE UNDONE: paying the returned link transmits a real document to a real fax machine. This tool itself does not charge you — it returns the exact price and a payment link, and the fax is only sent once you deliberately pay that link. Confirm the cost is acceptable before paying.

Schemas: list_tools.

Similar MCP servers

Official server.json
{
  "name": "com.ohfax/ohfax",
  "title": "Oh Fax",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://app.ohfax.com/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.1.0",
  "websiteUrl": "https://ohfax.com",
  "description": "Outbound US/CA fax for agents: quote PDF, pay via MPP, get delivery receipt."
}