MCPFax Public-Data Utility API MCP Server

by mcpscores Your server? Claim it

answering

MCPFax Public-Data Utility API is answering right now. Last checked 14 min ago. It exposes 31 tools.

One public fact when you have no API key: where, what time, what rate. 31 lookups.

Uptime history 64 days of history · worst day 93%

64 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

93 ms

Response time

average over 24h

open, no key

Access

streamable-http

What changed 99

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 15 August 2026. No other catalogue keeps this.

4 Sep 31 tools changed the parameters they ask for v1_airports_nearest, v1_air_quality, v1_business_days and 28 more

4 Sep a tool changed version

31 Aug 31 tool descriptions were rewritten v1_airports_nearest, v1_air_quality, v1_business_days and 28 more

28 Aug 31 tool descriptions were rewritten v1_airports_nearest, v1_air_quality, v1_business_days and 28 more

26 Aug a tool description was rewritten v1_weather

25 Aug a tool description was rewritten v1_weather

25 Aug a tool changed the parameters it asks for v1_weather

16 Aug a tool changed version

15 Aug a tool changed version

Nothing serious here today

Today is the operative word: we check MCPFax Public-Data Utility API every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add public-data-api --transport http https://mcpfax-utility.bowling-anthony.workers.dev/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "public-data-api": {
      "url": "https://mcpfax-utility.bowling-anthony.workers.dev/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.public-data-api]
url = "https://mcpfax-utility.bowling-anthony.workers.dev/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "public-data-api": {
      "url": "https://mcpfax-utility.bowling-anthony.workers.dev/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "public-data-api": {
      "url": "https://mcpfax-utility.bowling-anthony.workers.dev/mcp"
    }
  }
}

Available tools 31

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

weather

v1_weather

Weather forecast: Current conditions, the next 12 hours with rain probability, a multi-day forecast, and a plain answer to "will it rain". Source: Open-Meteo / NWS. $0.005 per call · GET /v1/weather

v1_weather_alerts

Active weather alerts: Active NWS watches/warnings for a US coordinate. Source: US National Weather Service. $0.008 per call · GET /v1/weather-alerts

air

v1_air_quality

Air quality: US & European AQI plus pollutant concentrations by coordinate. Source: Open-Meteo Air Quality (CAMS). $0.005 per call · GET /v1/air-quality

airports

v1_airports_nearest

Nearest airports: Coordinates → nearest airports (IATA/ICAO) by distance. Source: OurAirports (edge dataset). $0.008 per call · GET /v1/airports/nearest

business

v1_business_days

Business-day math: Count business days in a range, or add/subtract N business days, skipping weekends & holidays. Source: computed + Nager.Date. $0.005 per call · GET /v1/business-days

cfr

v1_cfr

CFR legal text: Fetch current Code of Federal Regulations text for a citation. Source: eCFR (GovInfo). $0.01 per call · GET /v1/cfr

country

v1_country

Country metadata: Name/ISO code → currency, capital, calling code, languages, flag. Source: ISO 3166 (edge dataset). $0.005 per call · GET /v1/country

crypto

v1_crypto_price

Crypto spot price: Spot price for a crypto asset in a fiat/crypto quote currency. Source: Coinbase / CoinGecko. $0.005 per call · GET /v1/crypto-price

dns

v1_dns

DNS lookup: Resolve DNS records via DNS-over-HTTPS. Source: Google / Cloudflare DoH. $0.005 per call · GET /v1/dns

drug

v1_drug_label

FDA drug label: openFDA structured drug labeling (uses, warnings, dosage). Source: openFDA. $0.01 per call · GET /v1/drug-label

econ

v1_econ_indicator

Economic indicator: World Bank indicator time series for a country (GDP, unemployment, etc.). Source: World Bank Open Data. $0.008 per call · GET /v1/econ-indicator

geocode

v1_geocode

Forward geocoding: Place name → coordinates, country, timezone. Source: Open-Meteo / Nominatim. $0.005 per call · GET /v1/geocode

geolocation

v1_ip_geolocation

IP geolocation: IP address → location, ASN, ISP. Source: ipwho.is / ip-api. $0.005 per call · GET /v1/ip-geolocation

holidays

v1_holidays

Public holidays: Public holidays for a country & year. Source: Nager.Date. $0.005 per call · GET /v1/holidays

icd10

v1_icd10

ICD-10-CM search: Search ICD-10-CM diagnosis codes by term or code. Source: NLM Clinical Tables. $0.008 per call · GET /v1/icd10

inflation

v1_inflation

Inflation calculator: Adjust an amount between years using CPI (any country, not just US). Source: World Bank CPI. $0.008 per call · GET /v1/inflation

lei

v1_lei

LEI lookup: Legal Entity Identifier record by LEI code or entity name. Source: GLEIF. $0.008 per call · GET /v1/lei

naics

v1_naics

NAICS lookup: Official 2022 NAICS code → title, hierarchy, children; or keyword search. Source: U.S. Census 2022 NAICS (edge dataset). $0.008 per call · GET /v1/naics

rdap

v1_rdap

RDAP whois: Structured domain/IP registration data (modern whois). Source: RDAP (rdap.org). $0.005 per call · GET /v1/rdap

reverse

v1_reverse_geocode

Reverse geocoding: Coordinates → nearest address. Source: Nominatim / BigDataCloud. $0.005 per call · GET /v1/reverse-geocode

robots

v1_robots

robots.txt / llms.txt: Fetch and parse a site's robots.txt and llms.txt. Source: direct fetch. $0.005 per call · GET /v1/robots

sec

v1_sec_company_facts

SEC EDGAR company facts: Company profile + recent filings; or XBRL financial facts for a concept. Source: SEC EDGAR. $0.01 per call · GET /v1/sec-company-facts

stock

v1_stock_quote

Stock quote: Delayed quote & key stats for an equity/ETF/index. Source: Yahoo Finance. $0.005 per call · GET /v1/stock-quote

sun

v1_sun

Sunrise / sunset: Sunrise, sunset, solar noon, day length by coordinate. Source: sunrise-sunset.org / Open-Meteo. $0.005 per call · GET /v1/sun

timezone

v1_timezone

Timezone by coordinate: Coordinates → IANA timezone, UTC offset, local time. Source: Open-Meteo. $0.005 per call · GET /v1/timezone

unit

v1_unit_convert

Unit conversion: Convert between units (length, mass, volume, speed, area, data, time, pressure, energy, temperature, angle). Source: deterministic edge compute. $0.005 per call · GET /v1/unit-convert

v1_fx

Currency exchange rates: Reference FX rates (ECB) with optional amount conversion. Source: Frankfurter (ECB) / open.er-api. $0.005 per call · GET /v1/fx

validate

v1_validate_email

Email validation: Syntax check + live MX/deliverability + disposable-domain flag. Source: edge compute + DoH. $0.005 per call · GET /v1/validate-email

vin

v1_vin_decode

VIN decode: Decode a US-market Vehicle Identification Number. Source: NHTSA vPIC. $0.01 per call · GET /v1/vin-decode

wikipedia

v1_wikipedia

Wikipedia summary: Lead summary/extract for a Wikipedia page. Source: Wikipedia REST. $0.005 per call · GET /v1/wikipedia

zip

v1_zip

Postal code lookup: ZIP/postal code → place(s) & coordinates. Source: Zippopotam.us. $0.005 per call · GET /v1/zip

Endpoints

URL	Transport	State	Latency	Checked
https://mcpfax-utility.bowling-anthony.workers.dev/mcp	streamable-http	answering	71 ms	14 min ago

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MCPFax Public-Data Utility API — questions

Answers built from our own checks of this server.

What can MCPFax Public-Data Utility API do?

It exposes 31 tools, read directly from the server on our last check. Among them: v1_airports_nearest, v1_air_quality, v1_business_days, v1_cfr, v1_country, v1_crypto_price and 25 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is MCPFax Public-Data Utility API working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 93 ms. The bar chart above shows every period we have measured.

How do I connect MCPFax Public-Data Utility API?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does MCPFax Public-Data Utility API need an API key?

No. MCPFax Public-Data Utility API completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 31 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is MCPFax Public-Data Utility API?

It answers our handshake in 93 ms on average, which is faster than 86% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.