# ImmigrationDB

> Read-only migration data: cities, visa routes, entry rules, costs, safety, climate, with sources.

- name: io.github.streltcoff/immigrationdb
- version: 0.3.0
- connection class: R0 (autonomous)
- trust: 97/100
- quality: 96/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.streltcoff%2Fimmigrationdb
- tools: https://api.protogrid.dev/v1/servers/io.github.streltcoff%2Fimmigrationdb/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "immigrationdb": {
      "type": "http",
      "url": "https://immigrationdb.com/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 100
- freshness: 100
- provenance: 90
- drivers: +repository +namespace-matches-repo +website +reachable +uptime-100% +updated-10d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 96/100 (strong)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list declares ttlMs 0, so clients re-fetch it on every use

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 15 of 15 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 2,997 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 15, about 2,997 tokens to load them all
- tool set hash: 140abeae5ea053302f2d7727346357b4
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.streltcoff/immigrationdb.svg)](https://protogrid.dev/servers/io.github.streltcoff/immigrationdb)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://immigrationdb.com/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (15)

- `compare_cities`: Arguments: cities (required), metric_ids (required). Compare canonical public cities on compatible metric definitions with provenance for every cell. Example: {"cities":[{"country":"de","slug":"berlin"},{"country":"de","slug":"munich"}],"metric_ids":["population_total"]} Boundary: Incompatible units, periods, definitions or grains are omitted with reasons; no implicit currency, period or geography conversion occurs.
- `get_city`: Arguments: country (required), slug (required). Get one admitted city with canonical URL, claim-level facts and source metadata. Required arguments are exactly `country` (ISO 3166-1 alpha-2) and `slug` (the canonical city slug, e.g. "berlin" — not the display name). Example: {"country":"de","slug":"berlin"} Boundary: Returns the backwards-compatible full city record by default; use get_city_fact for one metric.
- `get_city_fact`: Arguments: country (required), slug (required), metric_id (required). Return exactly one public city fact with value, unit, geographic grain, dates, source and snapshot provenance. Required arguments are exactly `country` (ISO 3166-1 alpha-2), `slug` (canonical city slug, not the display name) and `metric_id`. Example: {"country":"de","slug":"berlin","metric_id":"population_total"} Boundary: Returns not_available or ambiguous_metric_version instead of guessing across units, periods, definitions or geographic grains.
- `get_country`: Arguments: cc (required). Get one admitted country page record and official visa-route handoffs. It takes exactly one argument: `cc`, the ISO 3166-1 alpha-2 country code (e.g. "de") — not `country`. Example: {"cc":"de"} Boundary: Only public country records and their published handoffs are returned.
- `get_entry_rule`: Arguments: passport (required), destination. Get one passport entry rule using the canonical legal/entry URI identity. Example: {"passport":"lv","destination":"us"} Boundary: A missing answer is returned explicitly and is never replaced with an assumption.
- `get_legal_route`: Arguments: destination (required), route_id (required). Get one admitted legal-route record with its official source. Example: {"destination":"de","route_id":"highly-skilled"} Boundary: Missing or incomplete route fields remain explicit; the response does not infer a legal outcome.
- `get_report`: Arguments: report_id (required). Get one public report envelope with canonical and machine-resource URLs. Example: {"report_id":"warmest-published-cities-across-current-coverage"} Boundary: The report response is bounded by the published report contract and does not expose review-only rows.
- `list_blocks`: Arguments: limit, cursor. List stable reviewed metric blocks with observed metric, fact and country coverage. Example: {"limit":20} Boundary: Block order and IDs are deterministic; coverage counts describe the current public snapshot only.
- `list_metrics`: Arguments: country, block, query, comparison_eligible, limit, cursor. List reviewed metric definitions and observed public snapshot coverage with bounded filters and pagination. Example: {"query":"population","country":"de","limit":20} Boundary: Descriptions and units come from the reviewed registry; missing ontology is reported as a contract gap, not generated from a label.
- `list_reports`: Arguments: category, limit, cursor. List public ImmigrationDB reports by optional category with bounded cursor pagination. Example: {"category":"Population","limit":20} Boundary: Lists published reports only; report rows retain their own source and method metadata.
- `resolve_city`: Arguments: query (required), limit. Resolve a natural-language city query to bounded ranked public candidates without silently selecting an ambiguous country. Example: {"query":"Berlin, Germany","limit":5} Boundary: A bare or ambiguous city name returns candidates and ambiguity; it must not auto-select a non-exact country.
- `search_destinations`: Arguments: query (required), limit, cursor. Search admitted ImmigrationDB country and city identities with bounded cursor pagination. Example: {"query":"Berlin, Germany","limit":5} Boundary: Returns ranked public identities; it does not guess a missing country or expose data-only records.
- `search_entry_rules`: Arguments: passport, destination, purpose, limit, cursor. Search passport entry rules from the admitted snapshot; unknown and unavailable decisions remain explicit. Example: {"passport":"lv","destination":"us","limit":20} Boundary: Only accepted public entry answers are returned; verify the responsible authority before travel.
- `search_facts`: Arguments: countries, filters, sort_metric, sort_order, limit, cursor, diagnostic. Run bounded deterministic numeric filters over eligible public city facts with explicit counts and provenance. Example: {"countries":["de"],"filters":[{"metric_id":"population_total","op":">","value":100000}],"sort_metric":"population_total","sort_order":"desc","limit":20} Boundary: Filters are ANDed, results are capped and tie-broken by canonical entity ID; wrong-grain or non-comparable facts are excluded unless diagnostic mode is explicit.
- `search_visa_routes`: Arguments: destination (required), purpose, limit, cursor. Search admitted destination visa and residence routes without inventing missing eligibility data. Example: {"destination":"de","purpose":"work","limit":20} Boundary: Returns sourced route families; it is reference information, not legal advice or an eligibility decision.