API and MCP server

Endpoints

• /api/v1/calculators: the catalogue, with each calculator’s inputs.
• /api/v1/calculators/{id}: POST a JSON object, or GET with the same fields as query parameters.
• /openapi.json: OpenAPI 3.1 description.
• https://pontia.xyz/mcp: MCP server (Streamable HTTP) with one tool per calculator, plus list_datasets and get_dataset.
• Every page also answers Accept: text/markdown with its Markdown copy.

Calculators

• Universal Credit when self-employed (UK) (uk-universal-credit-self-employed): Monthly Universal Credit during the 12-month start-up period (on actual earnings) and afterwards (with the minimum income floor), at a given monthly profit. 2026 to 2027 rates.
• Back to Work Enterprise Allowance or STEA (Ireland) (ie-enterprise-allowance): What BTWEA (100% of your weekly payment in year 1, 75% in year 2) or STEA (up to 9 months) pays in total, plus the Enterprise Support Grant for given start-up costs.
• JobSeeker Payment while self-employed (Australia) (au-jobseeker-self-employed): JobSeeker you keep each fortnight at a given annual business profit (divided into 26 fortnights) and fortnightly wages: $150 free, then 50c per $1 to $256 and 60c above (principal carers 40c), rates from 20 September 2026 including the Energy Supplement; plus the Small Business Coaching Self-Employment Allowance, not reduced by business income.
• Gründungszuschuss (Germany) (de-gruendungszuschuss): Phase 1 (ALG plus €300 a month for 6 months) and phase 2 (€300 a month for 9 months), and whether 150 days of ALG remain.
• ARCE or keeping ARE (France) (fr-arce-vs-are): ARCE (60% of remaining ARE rights as capital, in two halves) against keeping monthly ARE while creating (ARE minus 70% of declared pay, capped at 60% of remaining rights for contracts ended from 1 April 2025).
• Capitalizar o compatibilizar el paro (Spain) (es-capitalizar-paro): Pago único (up to 100% of the remaining benefit) against compatibilizar (keeping the monthly benefit for up to 270 days), and a year of the reduced autónomo contribution you enter.
• NASpI anticipata (Italy) (it-naspi-anticipata): Your remaining NASpI as a lump sum: 70% on approval and 30% at the end of the theoretical NASpI period, at most 6 months after applying. Gross, before IRPEF.
• Startersregeling WW and Bbz loan (Netherlands) (nl-startersregeling-ww): The 6-month WW start period (29% less WW, business income not deducted) and the monthly repayment of a Bbz starter loan (up to €48,060 at 8%, up to 10 years).
• Self-Employment Assistance (US states) (us-self-employment-assistance): What Self-Employment Assistance pays while you build a business in the states that run it, from your own weekly unemployment benefit and the weeks you have left.

Illustrative working on the published rules, not an entitlement or advice. Confirm with the benefit office. Money in minor units (pence or cents).

Try it

curl -s https://pontia.xyz/api/v1/calculators/uk-universal-credit-self-employed \
  -H 'content-type: application/json' \
  -d '{"maxUc":80000,"profit":90000,"workAllowance":"none","age":"21+","mifApplies":true,"hours":35}'

Add the MCP server to a client:

{
  "mcpServers": {
    "pontia": { "type": "http", "url": "https://pontia.xyz/mcp" }
  }
}

Datasets

20 datasets of official figures, each row quoted word for word from the government page and dated, with CSV and JSON versions. Browse them on the data pages or through list_datasets.

Terms

Free to use with a link to Pontia. Please keep the disclaimer next to any result you show. Questions: hello@pontia.xyz.