Subsidies and grants API
Flemish, Brussels, Walloon, federal and EU measures for citizens and businesses, in one data model and three languages. Search, match and follow changes from your own application.
From €20 a month, cancel any month.
curl "https://api.subsido.be/v1/subsidies?region=brussels&scope=regional&status=open,continuous&limit=2&lang=en" \
-H "Authorization: Bearer sb_live_..."{
"data": [
{
"id": "vl:183e85aa-7d15-44e1-8042-80249f39a64c",
"title": "Fundamenteel klinisch mandaat",
"status": "continuous",
"instrument_type": "other",
"issuer": "Fonds Wetenschappelijk Onderzoek - Vlaanderen",
"regions": [
"flanders",
"brussels"
],
"closes_at": null,
"rate_max": null,
"amount_max": null,
"links": {
"web": "https://subsido.be/en/grants/fundamenteel-klinisch-mandaat"
}
},
{
"id": "vl:48370b4d-399e-4b84-b891-ad7cc5d2ff27",
"title": "Steun voor wetenschappelijke internationale samenwerking en contacten",
"status": "continuous",
"instrument_type": "grant",
"issuer": "Fonds Wetenschappelijk Onderzoek - Vlaanderen",
"regions": [
"flanders",
"brussels"
],
"closes_at": null,
"rate_max": null,
"amount_max": null,
"links": {
"web": "https://subsido.be/en/grants/steun-voor-wetenschappelijke-internationale-samenwerking-en-contacten"
}
}
],
"pagination": {
"has_more": true,
"next_cursor": "eyJ..."
},
"meta": {
"total": 13
}
}What the API does
One stable data model for every measure. Five things you can build with it today.
Filter by region, audience, topic, type of support, status and deadline. Full-text search in three languages.
Send a profile and get every measure it may qualify for, with each condition met, not met or unknown, and the question that would settle it.
Every new measure, every changed deadline or amount and every closure as an event, with the field-level difference. Signed webhooks with retries.
subsidy.deadline_changedDeadline 15/10 → 31/10
subsidy.funding_changedMaximum €5,000 → €7,500
subsidy.createdNew call published
POST https://app.example.be/webhooks · Subsido-Signature: t=…,v1=…
Every change is a version. Read a measure as it stood on a given date, for instance to audit an old application.
The same search, detail pages and matching as tools for Claude, ChatGPT and other agents, with the same key.
How it works
We read the official sources, put everything in one model and keep it current. You build on top.
Official sources
Subsido
Your application
Use cases
Subsidies touch everyone: people who renovate, hire, invest or export. A few examples of what runs on this API.
Energy suppliers, installers, renovation platforms
Filter on the citizens audience, the customer's region and the topic, and show the current premiums with their conditions and a link to apply.
GET /v1/subsidies?audience=citizens®ion=flanders&topic=housing&lang=enAccounting packages, invoicing software, SME platforms
Send the customer profile to matching and show the measures they likely qualify for in their dashboard, with what is still missing.
POST /v1/match { company: { postcode, employees, nace } }Payroll, HR platforms, staffing agencies
On every new hire, look up the hiring and employment support in the employer's region.
GET /v1/subsidies?topic=hiring_employment®ion=brussels&lang=enBanks, fintechs, crowdfunding
Show the guarantees and loans open to the profile during the application, with their amounts.
GET /v1/subsidies?instrument_type=guarantee,loan®ion=brusselsGrant consultants, accountants, business support desks
Put your clients on a watchlist. Every new or changed measure triggers a new match, and you get a webhook for every new result.
POST /v1/watchlists/{id}/companiesCustomer service, public desks, in-house assistants
Connect the MCP server: the assistant searches, reads and matches on current data, with the source in every answer.
tools/call search_subsidies { q: "heat pump" }One data model
Whether the source is an EU portal, a Flemish product page or a Walloon scheme, you always get the same fields.
statusapplication_windowfundingrules_readableprovenance{
"id": "wallonia:wal-cheques-croissance",
"title": "Business vouchers Growth: diagnosis and coaching",
"status": "continuous",
"instrument_type": "voucher",
"issuer": { "name": "SPW Économie Emploi Recherche",
"government_level": "region" },
"geography": { "scope": "regional", "regions": ["wallonia"] },
"application_window": { "rolling": true, "closes_at": null },
"funding": { "rate_max": 50, "amount_max": 70000,
"de_minimis": true },
"eligibility": { "company_sizes": ["micro", "small", "medium"],
"topics": ["advice_consultancy", "growth_scaleup"] },
"rules_readable": { "conditions": [
{ "label": "Establishment in Wallonia",
"field": "company.regions", "op": "contains_any" } ] },
"provenance": { "source_id": "curated_wallonia",
"last_checked_at": "2026-09-27T20:46:00+02:00" }
}Multilingual
Summaries in Dutch, French and English, and titles in every language the source publishes them in. Use lang= to choose which comes first.
Coverage
From renovation premiums and hiring support to innovation calls: by region, federal and European, for citizens and for businesses.
For developers
A complete contract, every error documented, ready to try in the API reference.
Stable pagination, even when the data changes in between.
HMAC-SHA256 with a timestamp, retries for up to twelve hours, test deliveries from the dashboard.
Build with a test key, switch over without changing code.
RateLimit headers and clear error codes, so your client knows when to wait.
The same key works for the REST API, the change feed and the MCP server.
Choose a plan
Sign in with Google and pick the plan that fits your volume.
Make your first call
GET /v1/subsidies with your key as a Bearer token.
Listen for changes
A webhook on your endpoint, or the change feed with a cursor.
Pricing
Prices exclude VAT. Paid yearly: twelve months for the price of ten.
From €20 a month. Cancel any month.