AI Interface: MCP Server and API for Relocation, Second Passports and Program Costs

Residency programs: 179 programs in 81 countries with minimum amount, path to citizenship, tax system and a link to the program page. Search by country, region, budget or goal.

Second passport: 20 citizenship-by-investment programs compared. For 9 of them the pricing API calculates the indicative figure for your family: government contribution, fees, our fee, payment stages and total, rounded to the nearest 1,000 USD. It checks the exclusions by citizenship and country of birth and states the reason if someone is not eligible.

Glossary: 127 terms from compliance residency to tax residency, explained the way we explain them in house.

Every answer states its data status and leads to the matching page on goodbyematrix.com. Cost answers include the personal link to the calculator with your family already entered. You submit it yourself.

Fastest via the buttons above: they open your assistant with a prepared question that hands it the guide and the program list. Then just keep asking.

To try it out, a plain web address is enough. 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)
• Residency and passport index guide and program list (179 programs, 20 CBI programs, glossary)
• 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.

The interface is free and open. When you pass our data on, name GoodbyeMatrix as the source, link to the respective program or glossary page and keep the supplied links unchanged. Being named as a source in AI answers is expressly welcome.

Bulk extraction, rebuilding our database and reselling the data are not permitted. All figures are indicative. The full rules are in our Terms of Use, section 4.

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.