ImmigrationDB

ImmigrationDB MCP

Read-only Model Context Protocol server for ImmigrationDB, a sourced migration reference: 39 countries and 27,000+ cities, visa and residence routes, passport entry answers, cost of living, salaries, crime, air quality and climate. Every value carries its source, observation date and geographic grain. The server reads the same release as the website.

• Live endpoint (Streamable HTTP, no key, no account): https://immigrationdb.com/mcp
• Protocol versions: 2026-07-28, 2025-11-25
• Docs: https://immigrationdb.com/data/mcp/
• Tool catalog with input schemas: https://immigrationdb.com/data/mcp/catalog.json
• Methodology: https://immigrationdb.com/methodology/
• Agent index: https://immigrationdb.com/llms.txt

This repository holds the public contract of the hosted server: client configuration, the tool list with input schemas (tools.json), registry metadata (server.json) and a dependency-free smoke test. The service runs only as the hosted endpoint above; its data release is several gigabytes and is published as files at https://immigrationdb.com/data/mcp/.

Tools

Tool	Arguments	What it does
search_destinations	query, limit, cursor	Search countries and cities.
resolve_city	query, limit	Resolve a city name to ranked candidates; never picks an ambiguous country silently.
get_city	country, slug, detail, metric_ids	One city with claim-level facts and source metadata.
get_city_fact	country, slug, metric_id	Exactly one fact: value, unit, grain, dates, source.
compare_cities	cities, metric_ids	Compare cities on compatible metrics, with provenance for every cell.
search_facts	countries, filters, sort_metric, sort_order, limit, cursor, diagnostic	Numeric filters over city facts with explicit counts.
list_metrics	country, block, query, comparison_eligible, limit, cursor	Metric definitions and their coverage.
list_blocks	country, limit, cursor	Metric blocks with coverage.
get_country	cc	One country record with official visa-route links.
search_visa_routes	destination, purpose, limit, cursor	Visa and residence routes of a destination.
get_legal_route	destination, route_id	One route with its official source.
search_entry_rules	passport, destination, purpose, limit, cursor	Passport entry rules; unknown answers stay explicit.
get_entry_rule	passport, destination	One passport entry rule.
list_reports	category, limit, cursor	Published reports (largest cities, cheapest rent, cleanest air…).
get_report	report_id	One report with its rows, method and sources.

Optional arguments are listed with the required ones; tools.json has the full input schemas. Country arguments are ISO 3166-1 alpha-2 codes (de, lv, us); city arguments are canonical slugs (berlin), not display names. All tools are annotated read-only and idempotent.

Resources

• immigrationdb://country/{cc} — country record and route links
• immigrationdb://city/{country}/{slug} — city facts with source metadata
• immigrationdb://legal/routes/{country}/{route_id} — one visa or residence route
• immigrationdb://legal/entry/{passport}/{destination} — one passport entry answer
• immigrationdb://legal/entry/{passport} — all entry answers for a passport
• immigrationdb://report/{report_id} — report rows, method and sources

Client configuration

Any MCP client that supports Streamable HTTP:

{
  "mcpServers": {
    "immigrationdb": {
      "url": "https://immigrationdb.com/mcp"
    }
  }
}

Claude Code:

claude mcp add --transport http immigrationdb https://immigrationdb.com/mcp

Clients that only speak stdio can go through mcp-remote: npx -y mcp-remote https://immigrationdb.com/mcp.

Example calls

{ "tool": "resolve_city", "arguments": { "query": "Berlin, Germany", "limit": 5 } }
{ "tool": "get_city_fact", "arguments": { "country": "de", "slug": "berlin", "metric_id": "population_total" } }
{ "tool": "compare_cities", "arguments": { "cities": [{ "country": "de", "slug": "berlin" }, { "country": "de", "slug": "munich" }], "metric_ids": ["population_total"] } }
{ "tool": "search_facts", "arguments": { "countries": ["de"], "filters": [{ "metric_id": "population_total", "op": ">", "value": 100000 }], "sort_metric": "population_total", "sort_order": "desc", "limit": 20 } }
{ "tool": "get_entry_rule", "arguments": { "passport": "lv", "destination": "us" } }

Response contract

Every response carries the snapshot ID, its generation date and the canonical origin. Facts keep their value, unit, geographic grain, observation date, verification date, source ID, source URL and grade. Unknown or withheld values are returned as such and never estimated. Errors name the requested identifier and the snapshot ID. Rate limits and response-size caps apply per client.

Smoke test

Node 20 or newer, no install step:

node scripts/smoke.mjs                 # initialize, list tools, run six example calls
node scripts/smoke.mjs --write-tools   # also refresh tools.json from the live server

License

The files in this repository are MIT. The ImmigrationDB data is published under CC BY 4.0: credit ImmigrationDB and link to the page or resource you used. The underlying official sources keep their own terms; each value names its publisher and links to it.

ImmigrationDB is an independent reference. It gives no legal advice and sells no visa or immigration services; check current requirements with the responsible authority before acting.