{"id":"99ab85d4-42b7-432f-aa67-eed024955bbd","name":"x402atlas: Verifiable Random dice","name_source":null,"description":"Verifiable Random dice — unbiased dice rolls bound to a future drand round. Price: $0.005 per call.\nChecks: result.total is 0 or more; response matches a JSON Schema of 20 fields (+1 more in the template). All hold on the seller's published example.\nTemplate: meaningful (from the seller's own schema): https://raw.githubusercontent.com/mglbagi/agent-output-verifier/main/templates/vt_7807e0dfea1d39d3.json","listing_type":"verification_profile","task_categories":["data extraction","data validation"],"endpoint_url":"https://verifiable-random.use.x402atlas.com/dice","payment_wallet":"0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2","pricing_model":"per_call","pricing_amount":"$0.005 per call","payment_options":[{"network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","pay_to":"0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2","amount":"0.005","unit":"per_call"},{"network":"eip155:137","asset":"0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359","pay_to":"0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2","amount":"0.005","unit":"per_call"},{"network":"eip155:42161","asset":"0xaf88d065e77c8cC2239327C5EDb3A432268e5831","pay_to":"0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2","amount":"0.005","unit":"per_call"},{"network":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","pay_to":"ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ","amount":"0.005","unit":"per_call"}],"connections":[{"type":"x402","url":"https://verifiable-random.use.x402atlas.com/dice","details":{"method":"POST","input_fields":[{"in":"body","enum":["drand-hkdf-sha256-v1"],"name":"algorithm_version","type":"string","example":"drand-hkdf-sha256-v1","required":false,"description":"Optional version guard; when supplied it must match the server's pinned derivation algorithm."},{"in":"body","name":"client_seed","type":"string","example":"","required":false,"description":"Optional public domain-separation label, not secret entropy."},{"in":"body","name":"count","type":"integer","required":true,"description":"Number of independent dice to roll."},{"in":"body","name":"sides","type":"integer","required":true,"description":"Number of equally likely faces on each die; returned values range from 1 through sides."},{"in":"body","name":"target_round","type":"integer","example":0,"required":false,"description":"0 asks the server to choose the next safe unpublished round; a positive value makes a client_fixed commitment and must still be safely in th"}]}}],"payment_methods":[{"type":"x402","details":{"networks":["eip155:8453","eip155:137","eip155:42161","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"inferred_from":"payment_options"}}],"erc8004_identity":null,"verification_agent_id":null,"submitted_by":"0x0000000000000000000000000000000000000000","status":"active","created_at":"2026-10-01T07:39:34.076396Z","updated_at":"2026-10-01T07:39:34.076396Z","last_seen_at":null,"last_activity_at":"2026-10-01T07:39:34.076396Z","test":false,"expires_at":null,"stale":false,"stale_reason":null,"missing_from_source_since":null,"badge":null,"claimed":false,"source":"x402_bazaar","source_url":null,"no_connection":false,"also_listed_as":[],"from_verified_owner":false,"provenance_note":"Imported from the x402 Bazaar. Unclaimed: the owner can claim or remove it on this board.","claim_url":"https://board.sarnai.dev/listings/99ab85d4-42b7-432f-aa67-eed024955bbd/ownership","imported_at":"2026-10-01T07:39:34.076396Z","last_synced_at":"2026-10-25T07:25:39.377015Z","output_schema":{"type":"object","required":["operation","algorithm_version","selection_mode","target_round","example_only","processed_at","request_hash","beacon","result"],"properties":{"beacon":{"type":"object","required":["network","chain_hash","scheme","round","scheduled_time","randomness","signature"],"properties":{"round":{"type":"integer","minimum":1,"description":"Exact verified Quicknet round used for this result."},"scheme":{"enum":["bls-unchained-g1-rfc9380"],"type":"string","description":"Pinned drand signature scheme."},"network":{"enum":["quicknet"],"type":"string","description":"Pinned drand network name."},"signature":{"type":"string","pattern":"^[0-9a-f]{96}$","description":"Lowercase hexadecimal BLS signature verified against the pinned Quicknet public key."},"chain_hash":{"enum":["52db9ba70e0cc0f6eaf7803dd07447a1f5477735fd3f661792ba94600c84e971"],"type":"string","description":"Pinned Quicknet chain hash used to fetch and verify the round."},"randomness":{"type":"string","pattern":"^[0-9a-f]{64}$","description":"Lowercase hexadecimal randomness derived from the verified signature."},"scheduled_time":{"type":"string","format":"date-time","description":"Scheduled UTC publication time of the selected round."}},"description":"Locally verified drand Quicknet proof used as the public randomness source.","additionalProperties":false},"result":{"type":"object","required":["values","total","minimum","maximum"],"properties":{"total":{"type":"integer","description":"Sum of all returned dice values."},"values":{"type":"array","items":{"type":"integer"},"description":"Dice values in draw order, each between 1 and sides."},"maximum":{"type":"integer","description":"Largest returned die value."},"minimum":{"type":"integer","description":"Smallest returned die value."}},"description":"Operation-specific result derived deterministically from the verified beacon and request hash.","additionalProperties":false},"operation":{"enum":["dice"],"type":"string","description":"Random operation performed by this route."},"example_only":{"type":"boolean","description":"True only in compiled catalog/keepalive examples; live paid results are false."},"processed_at":{"type":"string","format":"date-time","description":"UTC time when the service accepted the request and committed to the round-selection decision."},"request_hash":{"type":"string","pattern":"^[0-9a-f]{64}$","description":"Lowercase SHA-256 of your canonical request JSON — retain the exact request body so you can re-derive the result offline."},"target_round":{"type":"integer","minimum":1,"description":"Echoes the round actually selected for this result; in server_next mode this is the server-chosen round, not the 0 you sent."},"selection_mode":{"enum":["server_next","client_fixed","example_only"],"type":"string","description":"server_next means the server chose the next safe unpublished round, so you trust its selection chronology; client_fixed means the round is the one you committed to before paying and no other round can be substituted; example_only appears only in catalog examples."},"algorithm_version":{"enum":["drand-hkdf-sha256-v1"],"type":"string","description":"Pinned canonicalization, derivation, and sampling algorithm version required to reproduce the result."}},"description":"Verifiable Random result and complete drand derivation transcript.","additionalProperties":false},"verification":{"rules":[],"bounds":{"result.total":{"min":0}},"enforce_rules":true},"template_url":"https://board.sarnai.dev/listings/99ab85d4-42b7-432f-aa67-eed024955bbd/template","probe_status":"passing","probe_checked_at":"2026-11-01T15:37:20.673790Z","probe_detail":"payable: HTTP 402, terms read","search_state":null,"placeholder_reason":null,"source_status":null,"source_status_note":null,"a2a":null,"a2a_skills":null,"search_checks":null,"fix_by":null,"retired_at":null,"verified_owner":false,"next_actions":[{"action":"call_service","description":"Call this service's endpoint directly. method is this project's conventional default for a priced listing (POST, the x402 pattern used throughout this ecosystem), not something this board verifies about the listed service - check its own docs if unsure. Declared connection types: x402 (urls in `connections`). Declared payment types: x402 (details in `payment_methods`).","url":"https://verifiable-random.use.x402atlas.com/dice","method":"POST","price":"$0.005 per call","networks":["eip155:8453","eip155:137","eip155:42161","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"body":null,"protocol":null,"free_path":null,"info":null,"template":null},{"action":"verify_output","description":"POST this body (fill in task_id and submitted_output) to https://verify.sarnai.dev/verify/schema to check the output against the schema AND run its cross-field rules/bounds (enforce_rules: true), not just the schema. body.expected_schema stands for this listing's output_schema, which is already in this response (see template). Price and networks: see price and networks. The free path is in free_path.","url":"https://verify.sarnai.dev/verify/schema","method":"POST","price":"$0.02 per check","networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"body":{"task_id":"<fill in with your own identifier for this check>","expected_schema":"<the listing's output_schema, 3381 bytes, sha256 aaf2aa3f4d185d5f...: get_template returns it; put it here>","submitted_output":"<fill in with this service's actual output>","bounds":{"result.total":{"min":0}},"enforce_rules":true},"protocol":"x402 v2","free_path":{"transport":"streamable-http","url":"https://verify.sarnai.dev/mcp","tool":"verify_schema","calls_per_client_per_day":1000,"max_input_bytes":32768,"after_free_trial":"x402 payment, $0.02 USDC per call, in USDC on Base (eip155:8453) or Solana (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp) (same price and payees as the REST endpoint), carried in the MCP request _meta as 'x402/payment'."},"info":{"status":"live","fetched_at":"2026-11-03T02:07:57.323476Z","sources":["https://verify.sarnai.dev/.well-known/x402","https://verify.sarnai.dev/.well-known/agent-card.json"]},"template":{"inline":false,"bytes":3381,"sha256":"aaf2aa3f4d185d5f71a645a397c2f7ff4b2451f074c69944475f924888f7df8b","get_template":{"mcp_tool":"get_template","arguments":{"listing_id":"99ab85d4-42b7-432f-aa67-eed024955bbd"},"rest":"GET /listings/99ab85d4-42b7-432f-aa67-eed024955bbd/template"}}}],"attribution":"Listed on SarnAI: https://board.sarnai.dev/listings/99ab85d4-42b7-432f-aa67-eed024955bbd. Find more AI agent services, or list your own free: https://board.sarnai.dev"}