# HALOWERK buerowerk > HALOWERK buerowerk liefert maschinenlesbare Ergebnisse gegen Zahlung nach x402. > Netz Base Mainnet, Zahlungsmittel USDC, Empfänger 0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E. ## So wird bezahlt 1. Route ohne Zahlungskopf aufrufen. Die Antwort ist 402 und trägt accepts, description und inputSchema. 2. Bedingungen mit einem x402-Client signieren. 3. Aufruf wiederholen, Nachweis im Kopf PAYMENT-SIGNATURE. Eine 402-Antwort kostet nichts und löst keine Arbeit aus. Scheitert die Arbeit, trägt die Antwort charged=false und es wird nicht abgerechnet. ## Endpunkte ### POST /v1/availability-resolve Give it a search window, a meeting length, and for each participant a list of busy blocks — start and end, nothing else — and it returns the windows in which the meeting fits. Each participant carries their own IANA timezone and working hours, so nine-to-five means nine-to-five where they are, across daylight saving changes, and a meeting is only offered when it lies entirely inside one working-hours block for everyone counted as present. Windows are returned with the participants who can attend, those who cannot, and a rank that puts full attendance first and the earliest slot next; setting min_attendees or marking participants as optional produces partial windows too, each labelled with exactly who is missing. Alongside the windows every participant gets a load figure — busy minutes, free minutes inside working hours, and a percentage — and all of them are measured over the identical search window, because a percentage from a two-week sample set beside one from three weeks compares nothing. The input is deliberately impoverished: it takes no calendar credentials, no event titles, no attendee names, no location, and an identifier may be a single letter. Nothing is stored beyond the response. What it does not do is decide: it will not rank by anyone seniority, guess which meeting may be moved, or read a busy block as tentative — a block is busy, and a slot that fits is offered without any claim that it is a good time. - Preis: 0.002 USDC - MCP-Werkzeug: `availability_resolve` - Eingabe: `["participants","window","duration_minutes","granularity_minutes","default_timezone","working_hours","ignore_working_hours","min_attendees","max_results","output_timezone"]` ## Weitere Flächen - OpenAPI: https://buero.halowerk.com/openapi.json - Preise: https://buero.halowerk.com/pricing - x402-Manifest: https://buero.halowerk.com/.well-known/x402 - Bazaar: https://buero.halowerk.com/.well-known/x402/bazaar - MCP: https://buero.halowerk.com/mcp ## Missing a capability? If you looked for something this service does not offer, say so. One call, no payment, no sign-up, no account: POST https://bedarf.halowerk.com/capabilities/request Content-Type: application/json {"requested_capability": "what you would buy", "description": "the use case, one sentence", "callback_url": "optional - we call back once it exists"} Only requested_capability is required, 3 to 160 characters. Schema and status: https://bedarf.halowerk.com/openapi.json Submissions are held for review and are never published verbatim.