Getting started

Can I test the fund data API without signing up?

Yes: GET /api/v1/demo/funds/{isin} returns the full JSON for any fund already in the store without a key, and the free ISIN validator, ETF overlap and portfolio look-through tools run on the same data.Updated 12 September 2026 · by FundFacts API

Short answer

Yes. GET https://fundfactsapi.com/api/v1/demo/funds/{isin} returns the complete payload for any fund that is already in the store, with no key, at 30 calls a minute per IP. It never loads a fund nobody has requested before (that returns 404 not_cached), so it is for seeing the shape, not for production. The free ETF overlap and portfolio look-through tools on this site run on the same data in the browser.

The demo endpoint

bash
curl -s https://fundfactsapi.com/api/v1/demo/funds/IE00B4L5Y983 | jq '{name, asOf: .data.dataAsOf, ter: .data.headlineMetrics.ter, risk: .data.riskRating, profile: .data.profile, top: .data.topHoldings[:5]}'

The JSON is identical to the authenticated endpoint's (isin, name, cached, generatedAt, expiresAt, data) minus the plan and quota fields. IE00B4L5Y983 (iShares Core MSCI World UCITS ETF) and IE00B3RBWM25 are always loaded; most large UCITS ETFs are.

Limits: 30 calls a minute per IP, and a 404 not_cached for a fund not yet in the store. A free key (15 lookups a month) lifts both.

The free tools

The live demo on the home page

The home page runs a lookup in the browser and shows the response, and the documentation embeds the full sample payload with every field explained.

Verify it yourself

The demo endpoint returns the live payload for a fund that is already in the store, without a key. Everything on this page can be checked against it.
bash
curl -s https://fundfactsapi.com/api/v1/demo/funds/IE00B4L5Y983 | jq '{name, asOf: .data.dataAsOf, ter: .data.headlineMetrics.ter, risk: .data.riskRating, top: .data.topHoldings[:3]}'

Reference

Docs: Endpoints

Frequently asked questions

Do I need a credit card to try it?

No. The Free plan is 15 lookups per month with no card; sign up with an e-mail address or Google and the key is shown in the dashboard.

Which ISINs work?

Any share class of a UCITS fund, ETF, money-market fund or open-end fund whose management company publishes a product page, factsheet and KID. Each share class has its own ISIN and is looked up on its own. Stocks, bonds and indices are not funds and return 404 fund_not_found.

Try it on your own ISINs

One request returns key facts, holdings, risk and performance as JSON. Free plan, no card.
Get a free API keySee the live demo

Related questions

Getting started

How do I get an API key for fund data?

Sign up with e-mail or Google at fundfactsapi.com/signup, copy the key from the dashboard, send it as Authorization: Bearer on every request. Free plan, 15 lookups a month, no card.
Getting started

Is there a free API for fund and ETF data?

Yes. FundFacts API has a free plan with 15 lookups a month and no card: any UCITS fund or ETF ISIN returns TER, risk indicator, holdings, exposures and returns as JSON. What it includes and where paid plans start.
Getting started

What does a fund factsheet look like as JSON?

The envelope and every section of the data object: key facts, fees, risk indicator, profile, holdings, breakdowns, returns, series, metrics, KID costs and as-of date, with a real example.
Getting started

What is FundFacts API?

FundFacts API is a REST and MCP API that turns any fund or ETF ISIN into one structured JSON factsheet (fees, risk indicator, holdings, exposures, returns, as-of date) read from the fund house's own documents and refreshed daily. What it returns, what it is for, what it is not, and the plans.