Pricing API for AI Assistants and Developers

For each of our 9 programs and any family setup, you get an indicative figure: government contribution, fees, our professional fee, the payment stages and the total.

You also see which family members the program includes. If someone is not covered, the answer tells you why.

The total is rounded to the nearest 1,000 USD, and the fees are derived from it. You receive the exact amounts in your personal cost breakdown by e-mail.

Every answer includes a personal link. It takes you straight to our program page, with the calculator already filled in for your family. If you gave the AI your name and e-mail, those fields are prepared as well. You submit it yourself.

If you add citizenship and country of birth, the API checks the program’s exclusions. If someone is affected, the answer gives the reason and calculates the figure for the remaining people.

The simplest way is a plain web address. This example calculates São Tomé and Príncipe for a family aged 45, 43, 14 and 10:

https://ai.goodbyematrix.com/cbi/api/agent/v1/quote?program=sao_tome&language=en&family=main:45,partner:43,child:14,child:10

Add &format=text to get a short text version an AI can quote directly. Leave out program to get all 9 programs at once.

• program: sao_tome, st_kitts, antigua, dominica, grenada, st_lucia, vanuatu, nauru or argentina
• language: de or en
• family: People separated by commas, each as role and age, for example main:45. The first person is always main. Roles: main, partner, child, parent, parent_in_law, grandparent, grandparent_in_law, sibling. Add attributes such as unmarried, dependent or not_dependent with a colon, for example child:21:dependent. Citizenship and country of birth as country codes: nat=DE (several with +, for example nat=DE+RU) and born=DE, for example main:45:nat=DE:born=DE.

The list of all programs with starting amount, processing time and visa-free access: program catalog.

• OpenAPI 3.1 with all fields and examples
• Technical reference with POST requests and error codes
• MCP server for Claude, ChatGPT and other assistants: https://ai.goodbyematrix.com/cbi/api/agent/v1/mcp (Streamable HTTP, no sign-in)
• API catalog following RFC 9727 and llms.txt

The API is open, but not unlimited: 10 requests per minute, 60 per hour and 200 per day per address. We block conspicuous bulk queries automatically.

All figures are indicative and based on the current program rules. They become binding only after we have pre-checked your family.

Prefer not to calculate yourself? Start right away with our Program Finder or book a free consultation.