ZV-2026-0265 · 2026-08-21 · mcp.x402-list.com
mcp.x402-list.com: Tool assess_services was removed.
breaking
What changed
Tool assess_services was removed. Tool check_health was renamed to x402_check_health. Tool get_facilitator_volumes was renamed to x402_facilitator_volumes. Tool find_best_service was renamed to x402_find_best_service. Tool get_service was renamed to x402_get_service. Tool search_x402_services was renamed to x402_search_services.
What to do
If your agents call mcp.x402-list.com, pin the new snapshot, patch the affected call sites, and let a green contract check confirm the fix. If you don't use the changed tools, nothing is required, but the rest of the ecosystem just learned about it at the same moment you did.
The redline
− assess_services Tool assess_services was removed. − check_health + x402_check_health check_health − get_facilitator_volumes + x402_facilitator_volumes get_facilitator_volumes − find_best_service + x402_find_best_service find_best_service − get_service + x402_get_service get_service − search_x402_services + x402_search_services search_x402_services − Check live health of x402 services. With no slug, returns a directory-wide snapshot (count… + Call this before you send a payment, or right after a call unexpectedly failed: is this se… check_health − Recommend the best x402 service(s) for a need. Ranked mostly on per-service reliability (l… + Call this when you have a need in words and want one service to call rather than a list to… find_best_service − Get on-chain-verified settlement volume per x402 facilitator (the core x402-list metric). … + Call this when the question is about the rail rather than the service: which x402 facilita… get_facilitator_volumes − Get full detail for one x402 service by slug: live status, uptime over 24h/7d/30d/90d, ave… + Call this once you hold a slug and are deciding whether to commit to that service: the ful… get_service − Search and filter the x402-list directory of services that accept x402 payments. Filter by… + Your first call when you do not know which x402 service exists for a job: it narrows a dir… search_x402_services + x402_assess_services Tool x402_assess_services was added. + x402_change_events Tool x402_change_events was added.