{"server":{"name":"app.rowb.stampcard/cards","title":"Stampcard — digital stamp cards for small shops, no app for the customer","$schema":"https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json","remotes":[{"url":"https://stampcard.rowb.app/mcp","type":"streamable-http","headers":[{"name":"Authorization","isSecret":true,"description":"Bearer shop API key from /signup. Free tier stamps from a phone without a key; the key is needed to call these tools."}]}],"version":"1.0.0","websiteUrl":"https://stampcard.rowb.app","description":"Create a shop program, hand customers a browser stamp card by QR poster, stamp it from a phone."},"_meta":{"io.modelcontextprotocol.registry/official":{"status":"active","isLatest":true,"updatedAt":"2026-09-23T22:10:31.10056Z","publishedAt":"2026-09-23T22:10:31.10056Z","statusChangedAt":"2026-09-23T22:10:31.10056Z"},"dev.protogrid/connectability":{"class":"R0","autonomous":true,"human_steps":[],"preferred":{"kind":"remote","idx":0},"remotes":[{"idx":0,"url":"https://stampcard.rowb.app/mcp","transport":"streamable-http","templated":false,"headers":[{"name":"Authorization","required":false,"secret":true,"value":null,"secret_names":["CARDS_TOKEN"]}],"auth":{"type":"none","location":null,"secret_name":null,"oauth":null},"protocol":{"supported_versions":["2025-06-18"],"stateless":true},"health":{"reachable":true,"uptime_30d":0.96,"latency_ms_p50":585,"consecutive_failures":0,"last_probe_at":"2026-10-19T18:04:46.994Z","last_ok_at":"2026-10-19T18:04:46.994Z"}}],"packages":[]},"dev.protogrid/tools":[{"name":"create_program","title":null,"description":"Create or update the shop program: shop name, reward text, stamps required before a reward. Returns the program and its join URL (the poster target).","annotations":null,"source":"probe","observed_at":"2026-10-19T18:04:46.994Z"},{"name":"get_card","title":null,"description":"Read one customer card: how many stamps, what the reward is, whether it is ready to redeem.","annotations":null,"source":"probe","observed_at":"2026-10-19T18:04:46.994Z"},{"name":"program_stats","title":null,"description":"Program plus this month stamp usage and quota, so a shop can tell how close it is to the free limit.","annotations":null,"source":"probe","observed_at":"2026-10-19T18:04:46.994Z"},{"name":"redeem","title":null,"description":"Redeem the reward on a card that has reached its required stamps. Resets the stamp count and increments the rewards-earned counter.","annotations":null,"source":"probe","observed_at":"2026-10-19T18:04:46.994Z"},{"name":"stamp","title":null,"description":"Add one stamp to a customer card. Identify the card by its 8-character code (from the customer page) or by its token. One stamp per card per day unless allow_multiple is true.","annotations":null,"source":"probe","observed_at":"2026-10-19T18:04:46.994Z"}],"dev.protogrid/trust":{"score":82,"components":{"hygiene":80,"liveness":98,"freshness":100,"provenance":55},"drivers":["+dns-namespace","+website","+reachable","+uptime-96%","+updated-26d-ago","-no-repository"],"flags":["no-repository"],"blocked":false,"computed_at":"2026-10-19T21:05:17.094Z","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: get_card (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); program_stats (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); create_program (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …","status":"fail","category":"hygiene"},{"id":"tools.token_cost","detail":"about 299 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":"no 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":5,"token_estimate":299,"tools_hash":"97631a075f2cc4fad76bf9cffb9df3ca","tools_changed_at":null,"computed_at":"2026-10-19T20:38:04.291Z","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":"app.rowb.stampcard/cards","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/app.rowb.stampcard%2Fcards/tools","arguments":{"name":"app.rowb.stampcard/cards"}},{"action":"get_connection","description":"Minimal connection block for the preferred remote or package","href":"/v1/servers/app.rowb.stampcard%2Fcards/connection?target=mcpServers","arguments":{"name":"app.rowb.stampcard/cards","target":"mcpServers"}},{"action":"search","description":"Find other servers by intent","href":"/v1/search?q={query}","arguments":{"q":"{query}"}}]}