{"id":"4a6c9073-7e2","name":"Linkrra Synap: LLM chat completions (OpenAI-compatible), pay per call","description":"OpenAI-compatible chat completions (LLM inference) paid per call in USDC on Base via x402: no account, no API key. POST {model, messages, max_tokens?, stream?}; returns an OpenAI chat.completion object with usage. Models: gpt-oss-20b, gemma-4-26b-a4b-it, qwen/qwen3-30b-a3b, qwen3-coder-30b, qwen/qwen3-vl-30b-a3b-instruct, or \"auto\" for the cheapest fit. Price is quoted per request: minimum $0.001, usage-priced per token above that (free catalogue with per-model prices: GET https://pool.linkrra.com/v1/models). max_tokens is capped at 4096. Streaming supported. Unknown model names get a 402 with a suggested_model and its exact accepts[].","endpoint_url":"https://pool.linkrra.com/api/billing/x402/chat/completions","endpoint_canonical":"https://pool.linkrra.com/api/billing/x402/chat/completions","category":"compute.llm","kind":"api","price_amount":0.001,"price_currency":"USDC","chains":["base"],"request_schema":null,"response_schema":null,"sample_query":null,"facilitator_url":null,"status":"verified","delisted_reason":null,"origin":"claimed","ephemeral":false,"created_at":1793354099,"updated_at":1793455858,"status_changed_at":1793355531,"embedding_synced_at":1793455860,"score":1,"p50_latency_ms":564,"p95_latency_ms":1402,"p99_latency_ms":1641,"probe_count":345,"probes_passed":345,"last_ok_at":1794018164,"consecutive_failures":0,"last_probed_at":1794018164,"probe_interval_s":7200,"distinct_payers":0,"x402_version":2,"transport":"header","obs_scheme":"exact","accepts_count":2,"accepts_index":0,"obs_network":"eip155:8453","obs_asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","obs_pay_to":"0xAA0a350f6080940c138A8A50C0Fa8c8387782eb4","amount_atomic":"1000","amount_usd":0.001,"domain_name":"USD Coin","domain_version":"2","observed_at":1794018164,"obs_first_seen_at":1793354213,"price_changed_at":null,"pay_to_changed_at":null,"payto_unstable":false,"payto_distinct_recent":1,"onchain_provider_status":null,"onchain_payto_checked":"0xaa0a350f6080940c138a8a50c0fa8c8387782eb4","onchain_checked_at":1794018995,"onchain_last_attempt_at":1794018995,"onchain_provider_error":0,"onchain_source":"index","header_bytes":6737,"verified_via":"GET","testnet":false,"payment_protocols":["x402"],"mpp_methods":null,"mpp_offers":null,"mpp_note":null,"onchain_payto_shared_listings":1,"onchain_count_capped":false,"onchain_shape":null,"onchain_daily":[{"day":"2026-10-08","tx":1,"payers":1,"usd":1},{"day":"2026-10-12","tx":1,"payers":1,"usd":0.01},{"day":"2026-10-13","tx":6,"payers":1,"usd":0.06},{"day":"2026-10-14","tx":9,"payers":1,"usd":0.09},{"day":"2026-10-15","tx":6,"payers":1,"usd":0.06},{"day":"2026-10-16","tx":6,"payers":1,"usd":0.06},{"day":"2026-10-17","tx":6,"payers":1,"usd":0.06},{"day":"2026-10-18","tx":9,"payers":4,"usd":0.09},{"day":"2026-10-19","tx":14,"payers":2,"usd":0.041},{"day":"2026-10-20","tx":16,"payers":3,"usd":0.016},{"day":"2026-10-21","tx":12,"payers":1,"usd":0.012},{"day":"2026-10-22","tx":13,"payers":2,"usd":0.013},{"day":"2026-10-23","tx":12,"payers":1,"usd":0.012},{"day":"2026-10-24","tx":12,"payers":1,"usd":0.012},{"day":"2026-10-25","tx":11,"payers":1,"usd":0.011},{"day":"2026-10-26","tx":11,"payers":1,"usd":0.011},{"day":"2026-10-27","tx":10,"payers":1,"usd":0.01},{"day":"2026-10-28","tx":12,"payers":1,"usd":0.012},{"day":"2026-10-29","tx":6,"payers":1,"usd":0.006},{"day":"2026-10-30","tx":10,"payers":1,"usd":0.01},{"day":"2026-10-31","tx":12,"payers":1,"usd":0.012},{"day":"2026-11-01","tx":13,"payers":2,"usd":0.013},{"day":"2026-11-02","tx":14,"payers":1,"usd":0.014},{"day":"2026-11-03","tx":11,"payers":2,"usd":0.011},{"day":"2026-11-04","tx":13,"payers":2,"usd":0.013},{"day":"2026-11-05","tx":12,"payers":1,"usd":0.012},{"day":"2026-11-06","tx":12,"payers":1,"usd":0.012},{"day":"2026-11-07","tx":2,"payers":1,"usd":0.002}],"latest_purchase_delivered":true,"latest_purchase_at":1793527625,"paid_verification_latest":{"at":1793527625,"delivered":true,"tx_hash":"0x437833f6c96527efdebe8afc00dcf89b9ea27a1b466a9a214fb248f32a25f5e1","amount_usdc":0.001,"failure_reason":null,"note":"Most recent settled purchase by the nohumans scout; it delivered.","at_iso":"2026-11-01T10:07:05Z","age_days":5},"paid_verification":{"verified":true,"verified_at":1793527625,"tx_hash":"0x437833f6c96527efdebe8afc00dcf89b9ea27a1b466a9a214fb248f32a25f5e1","amount_usdc":0.001,"schema_validated":null,"note":"Real USDC paid and response inspected by nohumans scout. One-time verification, not continuous.","verified_at_iso":"2026-11-01T10:07:05Z","age_days":5},"has_sample":false,"method_note":null,"paid_verified":true,"paid_verified_at":1793527625,"paid_depth":{"rung":"paid_verified","deliveries":1,"span_weeks":1,"first_ok_at":1793527625,"last_ok_at":1793527625,"last_attempt_ok":1,"through_change":false,"first_ok_at_iso":"2026-11-01T10:07:05Z","last_ok_at_iso":"2026-11-01T10:07:05Z"},"payto_sentinel":false,"payto_note":null,"evidence_tier":"paid_verified","evidence_note":"We paid this endpoint real USDC and confirmed settlement on-chain; the response was inspected.","verdict_age_seconds":2450,"probe_tier":"stable","next_check_by":1794025364,"next_check_basis":"stable tier, re-probed every 2 hours: verified with no failure in the last 24 h and no change of terms or status in 7 days, or failing 11 to 50 times in a row; any failure moves it to the watch tier on that probe; a record past next_check_by is stale by our own rule","last_probed_at_iso":"2026-11-07T02:22:44Z","next_check_by_iso":"2026-11-07T04:22:44Z","status_changed_at_iso":"2026-10-30T10:18:51Z","paid_verified_at_iso":"2026-11-01T10:07:05Z","probes_failed":0,"onchain_scope":"this listing's payTo address only (no other active listing names it); counts every USDC transfer to that address, not only paid calls to this endpoint","onchain_wallet":{"scope":"this listing's payTo address only (no other active listing names it); counts every USDC transfer to that address, not only paid calls to this endpoint","shared_by_listings":1,"pay_to":"0xaa0a350f6080940c138a8a50c0fa8c8387782eb4","tx_count_30d":272,"unique_payers_30d":9,"volume_usd_30d":1.685},"onchain_tx_count_30d":272,"onchain_unique_payers_30d":9,"onchain_volume_usd_30d":1.685,"created_at_iso":"2026-10-30T09:54:59Z","updated_at_iso":"2026-10-31T14:10:58Z","embedding_synced_at_iso":"2026-10-31T14:11:00Z","last_ok_at_iso":"2026-11-07T02:22:44Z","observed_at_iso":"2026-11-07T02:22:44Z","obs_first_seen_at_iso":"2026-10-30T09:56:53Z","onchain_checked_at_iso":"2026-11-07T02:36:35Z","onchain_last_attempt_at_iso":"2026-11-07T02:36:35Z","latest_purchase_at_iso":"2026-11-01T10:07:05Z","paid_verified_age_days":5,"latest_purchase_age_days":5,"report_outcome":{"how":"POST https://api.nohumans.directory/v1/reports","when":"after you paid this endpoint on Base, whether or not it delivered","body":{"listing_id":"4a6c9073-7e2","ok":"JSON boolean: did it deliver what it promised","tx_hash":"your payment's transaction hash on Base","payer_signature":"EIP-191 personal_sign of message_to_sign by the wallet that paid"},"message_to_sign":"nohumans.directory report v1\nlisting_id: 4a6c9073-7e2\ntx_hash: <tx_hash, lowercase>\nok: <true|false>","distinct_payers_reported":0,"weight":"counts toward ranking once 3+ distinct payers have reported this listing","help":"https://api.nohumans.directory/v1/reports"},"observed":{"checked_at":1794018164,"x402_version":2,"challenge_transport":"header","scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","pay_to":"0xAA0a350f6080940c138A8A50C0Fa8c8387782eb4","payment_options":2,"accepts_index":0,"extra":{"name":"USD Coin","version":"2"},"amount_atomic":"1000","amount_usd":0.001,"eip712_domain":{"name":"USD Coin","version":"2"},"price_stable_since":1793354213,"price_matches_listing":true,"payto_stable_since":1793354213,"checked_at_iso":"2026-11-07T02:22:44Z","price_stable_since_iso":"2026-10-30T09:56:53Z","payto_stable_since_iso":"2026-10-30T09:56:53Z"}}