{"data":{"slug":"synap-by-linkrra","name":"Synap by Linkrra","description":"OpenAI-compatible AI inference paid per call in USDC on Base. GET /v1/models lists the model catalogue with per-model USD prices per million tokens. Pay-per-call chat completions, prepaid credit top-up, and pay-per-call TTS, all via x402 v2 (scheme exact, eip155:8453).","base_url":"https://pool.linkrra.com","website_url":"https://synap.linkrra.com","category":"AI","endpoint_count":3,"min_price_usd":0.01,"uptime_24h":100,"source":"submitted","status":"online","verified":false,"verified_until":null,"payment_ready":true,"payment_ready_until":"2026-10-21T18:06:00.880Z","last_success_at":"2026-10-14T18:06:00.880Z","consecutive_failures":0,"check_interval_minutes":15,"last_checked_at":"2026-10-14T18:06:00.880Z","created_at":"2026-10-14T13:49:18.456Z","uptime":{"24h":100,"7d":100,"30d":100,"90d":100,"coverage":{"24h":{"daysCovered":1,"checkCount":17},"7d":{"daysCovered":1,"checkCount":17},"30d":{"daysCovered":1,"checkCount":17},"90d":{"daysCovered":1,"checkCount":17}}},"avg_response_time_ms":198,"total_checks":17,"networks":["BSE"],"networks_caip2":["eip155:8453"],"asset":"USDC","endpoints":[{"id":"5e04d38c-619b-440e-bea0-ed450e9a31f8","method":"GET","path":"/api/billing/x402/chat/completions","description":"Linkrra Synap inference — pay-per-call chat completion for model \"any catalogue model - generic quote, POST model + messages for an exact price\". Price covers up to 4096 output tokens at this model's own per-token price (see GET /v1/models), converted at $0.2273 per million credits. Minimum charge $0.01 per paid call. Unused tokens are not refunded in v1: the difference is credited to your paying wallet address on the topup ledger, to spend on another paid request.","mime_type":"application/json","is_active":true,"first_seen_at":"2026-10-14T13:49:18.456Z","last_seen_at":"2026-10-14T18:06:00.865Z","variable_amount":false,"min_price_usd":0.01,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"10000","price_usd":"0.0100000000","pay_to":"0xAA0a350f6080940c138A8A50C0Fa8c8387782eb4","max_timeout_seconds":120}]},{"id":"e7fcc070-5986-450e-b4f8-0f9cf9af0d0b","method":"GET","path":"/api/billing/x402/topup","description":"Linkrra inference credits — pay-as-you-go top-up ($1-$1000) at $0.2273/M tokens","mime_type":"application/json","is_active":true,"first_seen_at":"2026-10-14T13:49:18.456Z","last_seen_at":"2026-10-14T18:06:00.849Z","variable_amount":false,"min_price_usd":1,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"1000000","price_usd":"1.0000000000","pay_to":"0xAA0a350f6080940c138A8A50C0Fa8c8387782eb4","max_timeout_seconds":120}]},{"id":"8caf38fb-f1c8-4882-a496-cba9a9f4696d","method":"GET","path":"/api/billing/x402/tts","description":"Linkrra Voice TTS — pay-per-call text-to-speech for 0 characters. Returns a WAV clip. Price is computed from this exact text (no estimate, no overdraw), subject to a $0.01 minimum charge per paid call — a clip whose character-based price is below the minimum is quoted and settled at exactly the minimum. No refund path.","mime_type":"audio/wav","is_active":true,"first_seen_at":"2026-10-14T13:49:18.456Z","last_seen_at":"2026-10-14T18:06:00.857Z","variable_amount":false,"min_price_usd":0.01,"networks":["BSE"],"pricing":[{"scheme":"exact","network":"eip155:8453","network_caip2":"eip155:8453","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","asset_address_norm":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","asset_name":"USDC","price":"10000","price_usd":"0.0100000000","pay_to":"0xAA0a350f6080940c138A8A50C0Fa8c8387782eb4","max_timeout_seconds":120}]}],"assessment":{"updated_at":"2026-10-14T13:53:01.606Z","input_hash":"e5706095214a55a448101f22ba34067c302d1187355aa8792049b04348cc98ca","model_id":null,"prompt_version":null,"reliability":{"uptime":{"24h":null,"7d":null,"30d":null,"90d":null},"response_p95_ms":130,"avg_response_ms":130,"last_checked_at":"2026-10-14T13:50:00.554Z","consecutive_failures":-1,"total_checks":1},"compliance":{"grade":"A","passed":14,"total":14,"checks":[{"id":"payload_captured","label":"402 payload captured","pass":true},{"id":"accepts_present","label":"accepts[] array present","pass":true},{"id":"payto_recoverable","label":"payTo address recoverable","pass":true},{"id":"payto_conformant","label":"payTo at accepts[0].payTo (conformant shape)","pass":true},{"id":"payto_shape","label":"payTo is a valid on-chain address","pass":true},{"id":"price_present","label":"atomic price declared","pass":true},{"id":"price_sane","label":"atomic price in a sane range","pass":true},{"id":"asset_declared","label":"asset (token) address declared","pass":true},{"id":"network_caip2","label":"network resolves to CAIP-2","pass":true},{"id":"scheme_declared","label":"payment scheme declared","pass":true},{"id":"transport_https","label":"served over HTTPS","pass":true},{"id":"x402_version_current","label":"declares the current x402 version (2)","pass":true},{"id":"eip712_domain_extra","label":"EIP-712 domain parameters present on every EVM entry","pass":true},{"id":"version_channel_coherent","label":"x402 v2 envelope delivered in the payment-required header","pass":true}],"pay_to_source":"payTo","pay_to_location":"accept","staleness":{"probe_failing":false,"last_success_at":"2026-10-14T18:06:00.880Z","envelope_captured_at":"2026-10-14T13:50:00.554Z"}},"site":{"homepage":true,"openapi":true,"pricing":false,"llms_txt":false,"robots":false,"terms":true,"checked_at":"2026-10-14T13:53:00.491Z"},"domain":{"age_days":128,"registrar":"NameCheap, Inc.","free_host":false,"created_date":"2026-06-08T13:47:11.000Z","checked_at":"2026-10-14T13:53:01.374Z"},"economics":{"price_usd":0.01,"price_atomic":"10000","model":"tiered","category_percentile":51,"stability":0,"price_max_usd":1,"category_percentile_max":79,"endpoint_count":3,"distinct_price_count":2},"risk":{"level":"clean","flags":[]},"synthesis":null,"traction":{"status":"measured","volume_usd_30d":0,"tx_count_30d":0,"unique_buyers_30d":0,"last_settlement_at":null,"top_buyer_share_30d":null,"top_3_buyers_share_30d":null,"concentrated_volume":false,"trend_7d_vs_30d":null,"shared_payout":false,"shared_with":0,"measured_networks":["eip155:8453"],"first_settlement_at":null,"volume_usd_all_time":0,"tx_count_all_time":0,"median_settlement_usd_30d":null,"max_settlement_usd_30d":null,"settled_via":[],"settled_via_detail":[],"shared_with_services":[],"pro_quota_share":1,"caveat":"Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.","all_time_caveat":"All-time is floored at the start of our harvest window, not the service full history."}}},"provenance":{"license":"CC-BY-4.0","attribution_required":true,"attribution":"Data: x402-list.com (CC BY 4.0)","cite_as":"https://x402-list.com/services/synap-by-linkrra","source":"https://x402-list.com"}}