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Exchange rates, weather, holidays, postcodes, Wikipedia and more: free services with no key that allow business use, tested every day and ready to answer inside a chat.
A question from the coffee shop’s DMs and the answer each service really gave. The step reads the value; your message says it.
Exchange rates between currencies
GETapi.frankfurter.dev/v1/latest?from=USD&to=EUR&amount=24
They ask: How much is the $24 bag in euros?
The flow answers: About €21.30 today, at the central-bank rate.
Free for commercial use, no daily or monthly caps; only abuse is rate-limited.
Weather now and the forecast, by latitude and longitude
GETapi.met.no/weatherapi/locationforecast/2.0/compact?lat=45.52&lon=-122.68
They ask: Iced or hot today?
The flow answers: 13 °C and clear in Portland right now. Hot pour-over weather ☕ Weather: MET Norway
Free, commercial use allowed; the reply must credit “MET Norway”. Up to about 20 requests a second.
A country’s public holidays in a year
GETdate.nager.at/api/v3/PublicHolidays/2026/US
They ask: Do you roast on Monday the 12th?
The flow answers: Monday 12 October is Columbus Day, a public holiday. Orders that day roast on Tuesday.
Free, no key, no rate limits by its own docs. India is not covered.
A postal code to its town, in about 60 countries
GETapi.zippopotam.us/us/97205
They ask: Do you ship to 97205?
The flow answers: Good news! Beans reach Portland in 3 to 5 business days, and orders over $40 ship free.
Free, no key, no published limits; a small community service.
A UK postcode to its district and region
GETapi.postcodes.io/postcodes/SW1A1AA
They ask: Can I order from SW1A 1AA?
The flow answers: That’s Westminster, London. We don’t ship to the UK yet, so a barista will reply here with a café near you.
Free, no key, no published rate limit; open source.
An Indian PIN code to its area, district and state
GETapi.postalpincode.in/pincode/110001
They ask: My PIN is 110001
The flow answers: 110001 is Baroda House, Central Delhi. A barista will reply here about delivery to Delhi.
Free, no key, no published limits; unofficial, so it can be slow or briefly down.
A country’s currency, its capital and its flag
GETcountriesnow.space/api/v0.1/countries/currency/q?country=Mexico
They ask: What currency do I pay in Mexico?
The flow answers: In Mexico your card is charged in MXN.
Free, no key, no published rate limit; open source.
A short summary of any topic
GETen.wikipedia.org/api/rest_v1/page/summary/Flat_white
They ask: What’s a flat white?
The flow answers: Espresso with steamed milk, more coffee to milk than a latte and without a cappuccino’s thick foam. From Wikipedia
About 200 requests a minute for our server; the text is CC BY-SA, so the reply says it is from Wikipedia.
The time now in any time zone
GETtimeapi.io/api/time/current/zone?timeZone=America/Los_Angeles
They ask: Are you open now?
The flow answers: It’s 2:57 am on Wednesday in Portland. We open at 7, see you then!
Free for everyone, no published limit; in beta, with 180 days’ notice before an endpoint goes.
Find a book: title, author, year
GETopenlibrary.org/search.json?q=the+alchemist&limit=1
They ask: Book club pick this month?
The flow answers: O Alquimista (The Alchemist) by Paulo Coelho, first published in 1988.
Free, no key; about 1 to 3 requests a second, fine for answering people.
A random joke, safe for work
GETv2.jokeapi.dev/joke/Any?safe-mode&type=twopart
They ask: Tell me a joke while I wait
The flow answers: How much did your chimney cost? Nothing, it was on the house.
Free, no key; a hard limit of 120 requests a minute for our server.
A Pokémon’s types, abilities and stats
GETpokeapi.co/api/v2/pokemon/pikachu
They ask: pikachu
The flow answers: Pikachu is an Electric type. Abilities: static and lightning-rod.
No rate limit, but fair use: an address that hammers it is banned, so it suits a fan page.
What each service’s docs say about volume and use, which the AI builder repeats to you.
| Service | What it answers | Its terms |
|---|---|---|
| Frankfurter | Exchange rates between currencies | Free for commercial use, no daily or monthly caps; only abuse is rate-limited. |
| MET Norway | Weather now and the forecast, by latitude and longitude | Free, commercial use allowed; the reply must credit “MET Norway”. Up to about 20 requests a second. |
| Nager.Date | A country’s public holidays in a year | Free, no key, no rate limits by its own docs. India is not covered. |
| Zippopotam | A postal code to its town, in about 60 countries | Free, no key, no published limits; a small community service. |
| postcodes.io | A UK postcode to its district and region | Free, no key, no published rate limit; open source. |
| India Post PIN code | An Indian PIN code to its area, district and state | Free, no key, no published limits; unofficial, so it can be slow or briefly down. |
| CountriesNow | A country’s currency, its capital and its flag | Free, no key, no published rate limit; open source. |
| Wikipedia | A short summary of any topic | About 200 requests a minute for our server; the text is CC BY-SA, so the reply says it is from Wikipedia. |
| TimeAPI | The time now in any time zone | Free for everyone, no published limit; in beta, with 180 days’ notice before an endpoint goes. |
| Open Library | Find a book: title, author, year | Free, no key; about 1 to 3 requests a second, fine for answering people. |
| JokeAPI | A random joke, safe for work | Free, no key; a hard limit of 120 requests a minute for our server. |
| PokeAPI | A Pokémon’s types, abilities and stats | No rate limit, but fair use: an address that hammers it is banned, so it suits a fan page. |
Each service’s terms as its own docs state them, read on 2026-10-04 and carried in the app. Sample answers on this page were fetched from each service on 2026-10-07.
Why these twelve, and how they stay healthy.
Every page on CommentWatchDog calls from one server, and every page is a business.
A service is in only when its own terms allow business use and its free tier is not a small per-address quota that every account would share.
Each service is called daily with a real request; one that starts failing for reasons of its own (a 5xx, gone, now wants a key) is marked broken and left out until it passes again.
A person’s wrong input never marks a service broken.
Each service’s documented limits and terms go with it into the AI builder, so it can tell you before you rely on it, like MET Norway’s required credit.
A service that worked for one business can help the next one, safely.
A keyless GET that worked for one owner can be offered to others as its shape: the address and the parameter names. Never a request with a key, a body or a private address, and never one owner’s values.
Anything not on the list works through the same step with its own API and your key in the key box.
Your key is sealed on your step and never offered to anyone.
Well-known free APIs the AI builder will not pick on its own, and what it tells you if you ask for one.
What people ask before they use a free API.
Twelve ready services: Frankfurter (exchange rates), MET Norway (weather), Nager.Date (public holidays), Zippopotam (postal codes in about 60 countries), postcodes.io (UK postcodes), India Post PIN code, CountriesNow (currency, capital and flag), Wikipedia (summaries), TimeAPI (time zones), Open Library (books), JokeAPI (safe jokes) and PokeAPI (Pokémon).
Yes. Each one allows commercial use under its own terms, and services that do not (like Open-Meteo’s free API) were left out on purpose. Two ask for credit: replies with MET Norway weather must say “MET Norway”, and Wikipedia text should say it is from Wikipedia.
Add an HTTP request step and press Set it up with AI, then say what you want, like “tell people the weather in Portland”. It picks the matching service, tests it and fills the step in. You can also type the address yourself; see the HTTP request step.
Every service is tested daily with a real request. One that starts failing for its own reasons is marked broken and not offered until it passes again, and your step’s Failed way still catches any error so the chat goes on.
Yes. The HTTP request step calls any API: your shop, your CRM, your booking system or any public service. Paste its cURL example, or give the AI builder its docs and your key.
Their free tiers do not fit a business on a shared server: Open-Meteo’s free API is for non-commercial use, and CoinGecko’s keyless calls are limited per address and shared by everyone on ours. You can still call either through the HTTP request step with your own key.
No. A request to a service is free, however often the flow runs. Only setting a step up with AI uses AI credits, about 1 per answer.
