{"server":{"name":"io.stackdata/stackdata","title":"StackData","$schema":"https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json","remotes":[{"url":"https://api.stackdata.io/mcp","type":"streamable-http"}],"version":"0.1.0","websiteUrl":"https://stackdata.io","description":"Official statistics, China censuses & yearbooks, and as-of customs tariffs with legal citations."},"_meta":{"io.modelcontextprotocol.registry/official":{"status":"active","isLatest":true,"updatedAt":"2026-08-28T23:50:00.573706Z","publishedAt":"2026-08-28T23:50:00.573706Z","statusChangedAt":"2026-08-28T23:50:00.573706Z"},"dev.protogrid/connectability":{"class":"R0","autonomous":true,"human_steps":[],"preferred":{"kind":"remote","idx":0},"remotes":[{"idx":0,"url":"https://api.stackdata.io/mcp","transport":"streamable-http","templated":false,"headers":[],"auth":{"type":"none","location":null,"secret_name":null,"oauth":null},"protocol":{"supported_versions":["2025-06-18"],"stateless":true},"health":{"reachable":true,"uptime_30d":0.99130434,"latency_ms_p50":392,"consecutive_failures":0,"last_probe_at":"2026-10-19T09:34:50.162Z","last_ok_at":"2026-10-19T09:34:50.162Z"}}],"packages":[]},"dev.protogrid/tools":[{"name":"get_series","title":null,"description":"Fetch ONE series with every dimension named by you (no guessing or relaxing): dataset, ISO3 countries, an ISO period range and a member code for every dimension from get_structure. Returns status ok/empty/refused with each value's provenance, and the missing country-periods listed. A bad request is a named 400 error saying which field and what is allowed.","annotations":null,"source":"probe","observed_at":"2026-10-19T09:34:50.162Z"},{"name":"get_structure","title":null,"description":"The published structure of one dataset, free: its dimensions with every member code and label, frequencies, period coverage, the ISO3 countries it serves, and whether it is servable. Call this before get_series to learn the codes to send. Dataset ids come from search_datasets.","annotations":null,"source":"probe","observed_at":"2026-10-19T09:34:50.162Z"},{"name":"get_table","title":null,"description":"Fetch a STORED table whole, by dataset id (families cn-nbs-census and cn-nbs-yearbook): labelled rows × columns with original-language labels, English overlay, units, and provenance down to the source file. Ids look like 'cn-nbs-census:2010_a0101a'.","annotations":null,"source":"probe","observed_at":"2026-10-19T09:34:50.162Z"},{"name":"resolve_data","title":null,"description":"Ask a data question in English ('unemployment rate in Japan', 'compare GDP in Japan and Germany') — resolves to the best covering dataset and returns the observations, with coverage honesty (missing countries are reported, never papered over).","annotations":null,"source":"probe","observed_at":"2026-10-19T09:34:50.162Z"},{"name":"search_datasets","title":null,"description":"Search StackData's catalog of 50k+ official statistical datasets (SDMX/World Bank dataflows, China censuses and yearbooks, tariff schedules). Multilingual: an English query finds Chinese-titled tables. Returns dataset ids usable with the other tools.","annotations":null,"source":"probe","observed_at":"2026-10-19T09:34:50.162Z"},{"name":"tariff_lookup","title":null,"description":"As-of customs-tariff lookup: which measures/duty rates apply to a goods code in a jurisdiction (eu, us, uk, jp), optionally from an origin, on a date. Duty expressions are verbatim; every measure carries its legal citation. Not legal advice.","annotations":null,"source":"probe","observed_at":"2026-10-19T09:34:50.162Z"}],"dev.protogrid/trust":{"score":80,"components":{"hygiene":80,"liveness":100,"freshness":85,"provenance":55},"drivers":["+dns-namespace","+website","+reachable","+uptime-99%","~updated-51d-ago","-no-repository"],"flags":["no-repository"],"blocked":false,"computed_at":"2026-10-19T11:41:18.334Z","disclaimer":"Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed."},"dev.protogrid/quality":{"score":79,"label":"good","components":{"auth":null,"hygiene":71,"protocol":75,"stability":100,"dependencies":null},"checks":[{"id":"protocol.modern","detail":"newest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28","status":"warn","category":"protocol"},{"id":"protocol.stateless","detail":"only applies to 2026-07-28 servers","status":"na","category":"protocol"},{"id":"protocol.transport","detail":"streamable HTTP","status":"pass","category":"protocol"},{"id":"protocol.list_ttl","detail":"only applies to 2026-07-28 servers","status":"na","category":"protocol"},{"id":"auth.prm","detail":"no remote uses OAuth","status":"na","category":"auth"},{"id":"auth.as_metadata","detail":"no remote uses OAuth","status":"na","category":"auth"},{"id":"auth.cimd","detail":"no remote uses OAuth","status":"na","category":"auth"},{"id":"auth.secret_in_url","detail":"no templated URL","status":"na","category":"auth"},{"id":"tools.descriptions","detail":"every tool has a description","status":"pass","category":"hygiene"},{"id":"tools.description_length","detail":"descriptions are concise","status":"pass","category":"hygiene"},{"id":"tools.schemas","detail":"every tool has an object input schema","status":"pass","category":"hygiene"},{"id":"tools.annotations","detail":"no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones","status":"fail","category":"hygiene"},{"id":"tools.directory_hints","detail":"no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: resolve_data (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_structure (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); tariff_lookup (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …","status":"fail","category":"hygiene"},{"id":"tools.token_cost","detail":"about 1,038 tokens to load every tool","status":"pass","category":"hygiene"},{"id":"tools.api_dump","detail":"tools are not a one-to-one API dump","status":"pass","category":"hygiene"},{"id":"stability.changes","detail":"2 tool changes in 30 days","status":"pass","category":"stability"},{"id":"stability.rug_pull","detail":"no tool changed its meaning under the same name","status":"pass","category":"stability"},{"id":"deps.known_vulns","detail":"no npm or PyPI package","status":"na","category":"dependencies"},{"id":"deps.mcp_sdk_version","detail":"no npm or PyPI package","status":"na","category":"dependencies"},{"id":"deps.resolvable","detail":"no npm or PyPI package","status":"na","category":"dependencies"}],"drivers":["-tools.annotations","-tools.directory_hints","~protocol.modern"],"flags":[],"tool_count":6,"token_estimate":1038,"tools_hash":"e5454ee3862875e8e8b4a850db7c55f5","tools_changed_at":"2026-10-04T15:11:39.505Z","computed_at":"2026-10-19T11:27:36.926Z","disclaimer":"Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed."},"dev.protogrid/identity":{"canonical_id":"io.stackdata/stackdata","aliases":[],"alias_count":0,"repository_key":null,"owner":{"verified":false,"method":null,"since":null}}},"next_actions":[{"action":"list_tools","description":"Every current tool with input schemas","href":"/v1/servers/io.stackdata%2Fstackdata/tools","arguments":{"name":"io.stackdata/stackdata"}},{"action":"get_connection","description":"Minimal connection block for the preferred remote or package","href":"/v1/servers/io.stackdata%2Fstackdata/connection?target=mcpServers","arguments":{"name":"io.stackdata/stackdata","target":"mcpServers"}},{"action":"search","description":"Find other servers by intent","href":"/v1/search?q={query}","arguments":{"q":"{query}"}}]}