{"month":"2025-10","brief":{"id":"brief-2025-10","type":"monthly_brief","slug":"machine-economy-2025-10","month":"2025-10","headline":"Tool protocols outrun payment overlays","summary":"MCP servers and SDKs continued to ship while paid-MCP remained an overlay. Developers could expose tools faster than they could meter them. The unmet need is metering, not another tool schema.","whyItMatters":"Watch facilitator UX and MCP payment profiles, not new chat UIs.","whatToWatch":"Watch facilitator UX and MCP payment profiles, not new chat UIs.","eventAt":"2025-10-28","sourcePublishedAt":"2025-10-28","zfiniaPublishedAt":"2026-09-07T00:00:00.000Z","retrospective":true,"evidenceTier":"TIER_C","sourceName":"zFinia retrospective synthesis","sourceType":"zfinia_original","sourceUrl":"https://zfinia.com/archive/2025-10","official":false,"risk":"low","newsroomState":"PUBLISHED","methodology":"Original zFinia monthly brief. Event date is the month being described. zFinia publication date is 2026-09-07. Claims are limited to previously sourced official records in this archive plus labelled inference.","clusterKey":"id:brief-2025-10","publicationGate":{"autoPublish":false,"state":"SUMMARY_READY","review":"CORROBORATE","reason":"AMBIGUOUS_OR_SYNTHESIS"},"ingestedAt":"2026-09-10T12:13:11.596Z","updatedAt":"2026-09-10T12:13:11.596Z"},"timeline":{"schemaVersion":"zfinia-newswire-1","entity":"2025-10","generatedAt":"2026-09-10T12:13:11.596Z","items":[],"usageRights":"Caller may use returned JSON for their own systems. A single call does not grant redistribution of the full zFinia corpus as a competing archive. HTML pages are not the canonical bulk database."}}