{"slug":"devx-base-tx-preflight-2147997b","name":"DevX Base Tx Preflight","summary":"Preflight any Base transaction before you sign it: simulates the call against latest state (success or decoded revert reason), estimates gas with a safe limit, and prices the full fee (L2 execution + L1 data upper bound) in ETH and USD, plus the ETH balance needed. 0.50 USDC via x402 on Base.","status":"live","headings":[{"slug":"blockchain","title":"Blockchain & wallets"}],"indexable":true,"listed_since":"2026-11-06T20:22:27.068232Z","sources":[{"source":"x402_bazaar","external_id":"https://preflight.madebydevx.com/v1/preflight","owner_address":"0xb3cddccee6b150c8effd55b961afc0ecefe7f247","seen_at":"2026-11-12T10:22:34.972681Z","removed_at":null}],"endpoints":[{"url":"https://preflight.madebydevx.com/v1/preflight","host":"preflight.madebydevx.com","protocol":"x402","state":"live","last_probe_at":"2026-11-12T18:29:34.206563Z","last_ok_at":"2026-11-12T18:29:34.206563Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"preflight-madebydevx-com-bb260251","name":"preflight.madebydevx.com"}],"payment_options":[{"endpoint_url":"https://preflight.madebydevx.com/v1/preflight","network":"eip155:8453","scheme":"exact","rail":"exact","asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","coin":"USDC","asset_label":"USD Coin","amount":"500000","pay_to":"0xb3cddccee6b150c8effd55b961afc0ecefe7f247","observed_at":"2026-11-12T18:29:34.206563Z"}],"usage":{"source":"x402_bazaar","unique_payers_30d":1,"paid_calls_30d":1,"last_paid_at":"2026-11-06T05:09:43.591Z","reported_at":"2026-11-12T10:22:34.972681Z"},"assessment":{"method":"2026.11.4","checks":[{"id":"answers","state":"pass","reason":"Answered a check 1 hours ago."},{"id":"owner","state":"fail","reason":"No one has proven control of its domain or of the wallet it is paid at."},{"id":"track_record","state":"fail","reason":"Listed for 5 days; 30 are needed."},{"id":"real_customers","state":"fail","reason":"1 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed."},{"id":"clean_scan","state":"not_applicable","reason":"Not an MCP server."}],"passed":1,"applicable":4,"contradicted":false,"computed_at":"2026-11-12T00:22:12.745626Z"},"identity":{"endpoint_domains":["madebydevx.com"],"proven_domains":[],"proven_wallets":[],"namesakes":[],"namesake_count":0,"identity_checks":[],"wallet_attestations":[],"human_backings":[]},"replies":[],"customers":null,"scan":null,"notice":"Not affiliated with addrbook — claim or request removal."}