{"server":{"name":"com.tilwhen/tilwhen","title":"tilwhen date engine","$schema":"https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json","remotes":[{"url":"https://mcp.tilwhen.com/mcp","type":"streamable-http"}],"version":"1.0.1","websiteUrl":"https://tilwhen.com/mcp","description":"Deterministic date arithmetic with auditable receipts: business days, due dates, holidays."},"_meta":{"io.modelcontextprotocol.registry/official":{"status":"active","isLatest":true,"updatedAt":"2026-09-18T11:56:35.283139Z","publishedAt":"2026-09-18T11:56:35.283139Z","statusChangedAt":"2026-09-18T11:56:35.283139Z"},"dev.protogrid/connectability":{"class":"R0","autonomous":true,"human_steps":[],"preferred":{"kind":"remote","idx":0},"remotes":[{"idx":0,"url":"https://mcp.tilwhen.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":0.96460176,"latency_ms_p50":280,"consecutive_failures":0,"last_probe_at":"2026-10-19T09:15:35.939Z","last_ok_at":"2026-10-19T09:15:35.939Z"}}],"packages":[]},"dev.protogrid/tools":[{"name":"add_days","title":"Add calendar days to a date","description":"The date N whole calendar days after a date (exclusive counting: the start date is day 0). Omit date for today in tz. For working days use business_days; for the gap between two dates use days_between.","annotations":{"readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T09:15:35.939Z"},{"name":"business_days","title":"Business-day calculations","description":"Span mode (from+to): business days between two dates, exclusive of the start day, inclusive of the end day. Add mode (days, optional date): the date N business days away. Passing from or to selects span mode and needs both; days and date are then ignored, so add mode takes its start date in date, not from. Optional holiday jurisdiction or custom calendar, and a selectable working week. For calendar days use add_days, subtract_days or days_between.","annotations":{"readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T09:15:35.939Z"},{"name":"days_between","title":"Days between two dates","description":"Signed whole calendar days from the from date to the to date, midnight to midnight in tz: positive when to is later, negative when it is earlier. Endpoints are exclusive, so this is the gap and consecutive dates are 1 apart. Either date may be \"today\", resolved in tz. For working days between two dates use business_days; to move a date by N days use add_days or subtract_days.","annotations":{"readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T09:15:35.939Z"},{"name":"explain","title":"Explain a calculation step by step","description":"Runs any operation and returns the receipt plus human-readable derivation steps. Set op, then pass the fields that operation's own tool takes. Use it when the user asks how an answer was reached.","annotations":{"readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T09:15:35.939Z"},{"name":"holidays","title":"Public holidays for a jurisdiction and year","description":"Observed public holidays with the nominal (legal) date and status: rule (statutory) or declared (officially declared for that year). Declared-only holidays are omitted for undeclared years, with a holiday_data_incomplete warning.","annotations":{"readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T09:15:35.939Z"},{"name":"invoice_due","title":"Invoice due date from net terms","description":"Due date for Net-N payment terms (calendar days, invoice date = day 0). Optional roll-forward past weekends and, with a jurisdiction or custom calendar, public holidays.","annotations":{"readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T09:15:35.939Z"},{"name":"next_occurrence","title":"Next occurrence of an event or weekday","description":"The next occurrence strictly after the base date (default today) of either a tracked event slug (e.g. \"christmas\") or a weekday (0 = Sunday .. 6 = Saturday). Provide exactly one of event/weekday.","annotations":{"readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T09:15:35.939Z"},{"name":"parse_date_query","title":"Parse a natural-language date question","description":"Parses queries like \"90 business days from today in uganda\" into a normalized operation, answers it, and returns the auditable receipt. Ambiguous dates (03/04/2027) return needsClarification instead of a guess.","annotations":{"readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T09:15:35.939Z"},{"name":"subtract_days","title":"Subtract calendar days from a date","description":"The date N whole calendar days before a date (exclusive counting: the start date is day 0). Omit date for today in tz. For working days use business_days; for the gap between two dates use days_between.","annotations":{"readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T09:15:35.939Z"}],"dev.protogrid/trust":{"score":79,"components":{"hygiene":80,"liveness":99,"freshness":85,"provenance":55},"drivers":["+dns-namespace","+website","+reachable","+uptime-96%","~updated-31d-ago","-no-repository"],"flags":["no-repository"],"blocked":false,"computed_at":"2026-10-19T12:42:35.393Z","disclaimer":"Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed."},"dev.protogrid/quality":{"score":80,"label":"good","components":{"auth":null,"hygiene":100,"protocol":75,"stability":50,"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":"9 of 9 tools declare readOnlyHint or destructiveHint","status":"pass","category":"hygiene"},{"id":"tools.directory_hints","detail":"every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint","status":"pass","category":"hygiene"},{"id":"tools.token_cost","detail":"about 2,809 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":"1 tools kept their name but changed most of their description in 30 days; review before trusting them","status":"fail","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":["-stability.rug_pull","~protocol.modern"],"flags":[],"tool_count":9,"token_estimate":2809,"tools_hash":"f454adedf309b998d38ae6527186e4cf","tools_changed_at":"2026-09-27T11:55:00.370Z","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.tilwhen/tilwhen","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.tilwhen%2Ftilwhen/tools","arguments":{"name":"com.tilwhen/tilwhen"}},{"action":"get_connection","description":"Minimal connection block for the preferred remote or package","href":"/v1/servers/com.tilwhen%2Ftilwhen/connection?target=mcpServers","arguments":{"name":"com.tilwhen/tilwhen","target":"mcpServers"}},{"action":"search","description":"Find other servers by intent","href":"/v1/search?q={query}","arguments":{"q":"{query}"}}]}