{"server":{"name":"com.digitalundergroundstore/marketplace","title":"Digital Underground Developer Marketplace","$schema":"https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json","remotes":[{"url":"https://digitalundergroundstore.com/mcp","type":"streamable-http"}],"version":"1.0.0","websiteUrl":"https://digitalundergroundstore.com/community/","description":"Search a free marketplace of indie apps, AI tools, books and templates, and submit listings."},"_meta":{"io.modelcontextprotocol.registry/official":{"status":"active","isLatest":true,"updatedAt":"2026-10-16T07:57:51.849967Z","publishedAt":"2026-10-16T07:57:51.849967Z","statusChangedAt":"2026-10-16T07:57:51.849967Z"},"dev.protogrid/connectability":{"class":"R0","autonomous":true,"human_steps":[],"preferred":{"kind":"remote","idx":0},"remotes":[{"idx":0,"url":"https://digitalundergroundstore.com/mcp","transport":"streamable-http","templated":false,"headers":[],"auth":{"type":"none","location":null,"secret_name":null,"oauth":null},"protocol":{"supported_versions":["2025-11-25"],"stateless":true},"health":{"reachable":true,"uptime_30d":1,"latency_ms_p50":220,"consecutive_failures":0,"last_probe_at":"2026-10-19T10:18:40.772Z","last_ok_at":"2026-10-19T10:18:40.772Z"}}],"packages":[]},"dev.protogrid/tools":[{"name":"get_listing","title":"Get one listing","description":"Get full public details (including the long description) of one approved listing by its id (cm_...).","annotations":{"readOnlyHint":true,"openWorldHint":false},"source":"probe","observed_at":"2026-10-19T10:18:40.772Z"},{"name":"get_my_listing_status","title":"Check my listing status","description":"Check the review status (pending, approved, rejected) of one of the user's own listings. Requires their API key.","annotations":{"readOnlyHint":true,"openWorldHint":false},"source":"probe","observed_at":"2026-10-19T10:18:40.772Z"},{"name":"search_listings","title":"Search marketplace listings","description":"Search approved products on the Digital Underground Developer Marketplace (apps, AI tools, books, templates by independent makers). Returns summaries with links. Checkout happens on each maker's own site.","annotations":{"readOnlyHint":true,"openWorldHint":false},"source":"probe","observed_at":"2026-10-19T10:18:40.772Z"},{"name":"submit_listing","title":"Submit a listing for review","description":"Submit the user's own product to the marketplace. Requires the creator's API key (duk_..., from the Creator dashboard -> API keys; never guess one). Free. Every submission is screened and waits for human owner approval; nothing is published automatically. Only submit real products the user owns, with accurate claims.","annotations":{"readOnlyHint":false,"openWorldHint":false,"idempotentHint":false,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T10:18:40.772Z"}],"dev.protogrid/trust":{"score":83,"components":{"hygiene":80,"liveness":100,"freshness":100,"provenance":55},"drivers":["+dns-namespace","+website","+reachable","+uptime-100%","+updated-3d-ago","-no-repository"],"flags":["no-repository"],"blocked":false,"computed_at":"2026-10-19T13:13:11.978Z","disclaimer":"Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed."},"dev.protogrid/quality":{"score":85,"label":"new","components":{"auth":null,"hygiene":93,"protocol":75,"stability":null,"dependencies":null},"checks":[{"id":"protocol.modern","detail":"newest supported version is 2025-11-25; 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":"4 of 4 tools declare readOnlyHint or destructiveHint","status":"pass","category":"hygiene"},{"id":"tools.directory_hints","detail":"1 of 4 tools declare all four hints; missing: get_listing (destructiveHint, idempotentHint); get_my_listing_status (destructiveHint, idempotentHint); search_listings (destructiveHint, idempotentHint)","status":"warn","category":"hygiene"},{"id":"tools.token_cost","detail":"about 648 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":"tool history recorded for 3 of the 7 days needed","status":"na","category":"stability"},{"id":"stability.rug_pull","detail":"tool history recorded for 3 of the 7 days needed","status":"na","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":["~protocol.modern","~tools.directory_hints"],"flags":[],"tool_count":4,"token_estimate":648,"tools_hash":"e1ce191d7ab3be38cf12791fd3c67485","tools_changed_at":"2026-10-16T13:35:15.723Z","computed_at":"2026-10-19T13:05:09.887Z","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":"com.digitalundergroundstore/marketplace","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/com.digitalundergroundstore%2Fmarketplace/tools","arguments":{"name":"com.digitalundergroundstore/marketplace"}},{"action":"get_connection","description":"Minimal connection block for the preferred remote or package","href":"/v1/servers/com.digitalundergroundstore%2Fmarketplace/connection?target=mcpServers","arguments":{"name":"com.digitalundergroundstore/marketplace","target":"mcpServers"}},{"action":"search","description":"Find other servers by intent","href":"/v1/search?q={query}","arguments":{"q":"{query}"}}]}