{"uid":"cap_qIheUE-itenbkKUfW9bK1","slug":"radhikachain-zk-merkle-proof-endpoint-afe6e6ba","name":"RadhikaChain ZK Merkle Proof Endpoint","description":"Telemetria de cadena, inteligencia de defensa y computo verificable (Halo2, Nova, Plonky3). Pago por peticion en USDC nativo en Base (eip155:8453) mediante x402 v2 scheme exact; sin cuenta ni suscripcion. Catalogo canonico: GET /.well-known/x402.","url":"https://x402.radhikachain.xyz/zk/merkle","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"type":"object","properties":{"body":{"type":"object","additionalProperties":true},"queryParams":{"type":"object","additionalProperties":true}}},"output":{"type":"object","properties":{"example":{"type":"object","additionalProperties":true}}}}},"responseSchema":{"type":"json","example":{"k":11,"ok":true,"hash":"Poseidon · constantes auditadas Orchard/Zcash","asimetria":38,"privacidad":"la hoja y el camino no se registran ni se devuelven; solo la raiz es publica","profundidad":4}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"8.58","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$8.58/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"8.58","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"8.58","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_XqEi8sXyMoRde2nYXI22V","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"8.58","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a Poseidon-hashed Merkle root with depth and asymmetry statistics for verifiable membership proofs using audited Orchard/Zcash constants, without revealing the leaf or path.","exampleAgentPrompt":"Can you compute a ZK Merkle proof using RadhikaChain's Poseidon-hashed tree — I need the Merkle root and depth for a membership proof without exposing the leaf or path, using the audited Orchard/Zcash constants?","exampleUseCases":[{"title":"Anonymous set membership attestation","prompt":"I need to prove that a wallet is in a whitelist without revealing which wallet it is — can you get me a Poseidon Merkle root with depth and asymmetry stats using RadhikaChain's ZK Merkle endpoint so I can build the proof?"},{"title":"Audited ZK circuit parameter retrieval","prompt":"Pull the audited Poseidon Merkle tree parameters from RadhikaChain — specifically the tree depth, asymmetry score, and hash constants compatible with Zcash Orchard so I can configure my Halo2 circuit."},{"title":"Privacy-preserving inclusion proof for DeFi","prompt":"I'm building a DeFi compliance layer and need a ZK Merkle root that proves a user is in a permitted set without logging the leaf or path — fetch that from RadhikaChain's ZK Merkle service and give me the root hash and depth."}],"resultDescription":"Returns a JSON object containing: the Merkle tree depth (k=11 example), a success flag (ok), the Poseidon hash with audited Orchard/Zcash constants, an asymmetry score (e.g. 38), a privacy note confirming the leaf and path are not recorded or returned, and the tree depth (profundidad=4). Only the root is public; the witness is fully private.","failureModes":["Payment not included or invalid USDC amount returns 402 Payment Required","Malformed request parameters return 400 Bad Request","Service temporarily unavailable returns 503","x402 facilitator timeout causes payment verification delay","Invalid Base network chain ID in payment header causes rejection"],"whenToPreferThis":"Choose this endpoint when you need a privacy-preserving, audited Poseidon Merkle proof with Zcash Orchard-compatible constants (Halo2 circuit) and you require that the leaf and path remain fully private — only the root is returned. Prefer this over generic Merkle libraries when you need on-chain-compatible ZK proof parameters, pay-per-call pricing with no subscription, and a trustless setup via x402 on Base.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:35:17.440Z","isFirstParty":false}