Every change Wellknown observed on this MCP server, newest first, with what it was before and what it became. Tool-surface changes carry the definition diff. Nothing here is edited after the fact.
Changed the definition of "check" and "verify_receipt"
⟨20 unchanged words⟩ with fixes; arithmetic is recomputed in code. With request (what the human asked), it also checks the draft answers that. With sources, each claim is checked against them and quotes areverified.verified; with source_urls or fetch_cited, crosscheck fetches up to 3 web pages itself and checks against those (+$0.01 a page, and a dead link the draft gives fails it). $0.02. Paid per call in USDC over x402 ⟨52 unchanged words⟩
⟨8 unchanged words⟩ "maxLength":48000,"type":"string"},"fetch_cited":{"description":"Optional: also fetch the links the draft itself cites (up to 3 pages in all, +$0.01 each); a link that is gone fails the draft","type":"boolean"},"moltbook_identity":{"description":"Optional: a Moltbook ⟨87 unchanged words⟩ ^[0-9a-f]{64}$","type":"string"},"request":{"description":"Optional: what the human asked for, word for word if you have it. The reviewer then also checks that the draft answers it (a missed question, a changed scope, a wrong period)","maxLength":8000,"type":"string"},"source_urls":{"description":"Optional: up to 3 web pages crosscheck fetches after payment and checks the draft against, as sources. +$0.01 each","items":{"description":"A public http or https URL","type":"string"},"maxItems":3,"type":"array"},"sources":{"description":"Optional texts ⟨39 unchanged words⟩
⟨38 unchanged words⟩ the receipt object) plus that text: draft, request, and sources for check, task and deliverable ⟨13 unchanged words⟩
⟨80 unchanged words⟩ {64}$","type":"string"},"request":{"description":"check: the human's request, if the check had one","type":"string"},"sources":{"description":"check: the sources, ⟨43 unchanged words⟩
Changed the definition of "check"
⟨8 unchanged words⟩ "maxLength":48000,"type":"string"},"moltbook_identity":{"description":"Optional: a Moltbook identity token for the free tier, when it is on (a verified Moltbook agent gets free checks with no payment). Not stored. Without a free check left, the price comes back as usual","type":"string"},"open_review":{"description":"Optional: let a ⟨95 unchanged words⟩
Added "verify_receipt"; changed the definition of "check" (5 tools before, 6 now)
⟨8 unchanged words⟩ "maxLength":48000,"type":"string"},"open_review":{"description":"Optional: let a qualified outside reviewer take the job (not routed yet; crosscheck's reviewer does it and the receipt says so)","type":"boolean"},"ref":{"description":"Optional: the hash ⟨70 unchanged words⟩
Verify a crosscheck receipt — Free. Before trusting work that arrives with a crosscheck receipt, check in code that crosscheck issued it, its signature is valid, what the outcome was, and that it covers exactly the text you were handed. Pass receipt_hash (or the receipt object) plus that text: draft and sources for check, task and deliverable for accept, files for skillcheck, and the verdict if one came with it.
Certificate recorded, valid to 2026-12-22
Authorization not required
Changed the definition of "accept", "check" and "skillcheck"
⟨28 unchanged words⟩ this work","type":"string"},"ref":{"description":"Optional: the hash of a crosscheck receipt that brought you here. Its wallet earns check credits from your first 90 days of spend.","pattern":"^[0-9a-f]{64}$","type":"string"},"reference":{"description":"Optional reference material the ⟨22 unchanged words⟩
⟨8 unchanged words⟩ "maxLength":48000,"type":"string"},"ref":{"description":"Optional: the hash of a crosscheck receipt that brought you here. Its wallet earns check credits from your first 90 days of spend.","pattern":"^[0-9a-f]{64}$","type":"string"},"sources":{"description":"Optional texts the draft ⟨37 unchanged words⟩
Unknown → Live
First tool surface recorded: 5 tools (server version 1.0.0)
npm:crosscheckapi (package_npm) — from mcp_registry, with the record
https://crosscheckapi.com/mcp (mcp_streamable_http) — from mcp_registry, with the record
Showing the latest 10 events. The API returns up to 500 and filters by kind: ?kind=tool_surface_changed
⟨57 unchanged words⟩ exact files exists","type":"boolean"},"ref":{"description":"Optional: the hash of a crosscheck receipt that brought you here. Its wallet earns check credits from your first 90 days of spend.","pattern":"^[0-9a-f]{64}$","type":"string"}},"required":["files"],"type":"object"}