{"uid":"cap_UoRvZewtw-y4d0MKZ3Ngm","slug":"radhikachain-poi-proof-of-inclusion-endpoint-c7bc0ef1","name":"RadhikaChain POI — Proof-of-Inclusion 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/poi","method":"POST","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":{"root":"e96b3eac15c5...","height":45058,"leaves":2}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"1.716","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":"$1.716/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"1.716","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"1.716","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_FppRP_7tYegl1ydyqzSId","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"1.716","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a Merkle proof-of-inclusion (root, height, and leaf count) for a given point of interest on the RadhikaChain verifiable computation layer, paid per-request via x402 USDC on Base.","exampleAgentPrompt":"Can you fetch a Merkle proof-of-inclusion from RadhikaChain for the current chain state — I need the tree root, block height, and leaf count to verify inclusion in the ZK layer?","exampleUseCases":[{"title":"ZK Merkle inclusion audit","prompt":"Pull the current Merkle root and tree height from RadhikaChain so I can verify that a specific leaf is included in the Halo2 Poseidon membership tree right now."},{"title":"Chain state snapshot for compliance","prompt":"I need a cryptographic snapshot of the chain — fetch me the Merkle root, the current block height, and total leaf count from RadhikaChain so I can log it for our audit trail."},{"title":"Verifying a ZK proof off-chain","prompt":"Can you hit the RadhikaChain proof-of-inclusion endpoint and get me the latest Merkle root and height? I want to cross-check it against a proof we received from a counterparty."}],"resultDescription":"A JSON object containing: `root` (hex-encoded Merkle root hash of the current ZK tree), `height` (current block height as an integer), and `leaves` (total number of leaves in the Merkle tree as an integer). This provides a compact, verifiable snapshot of chain inclusion state.","failureModes":["Payment failure: x402 payment not included or USDC balance insufficient — returns 402 Payment Required","Invalid or malformed POST body — returns 400 Bad Request","Chain data temporarily unavailable — returns 503 Service Unavailable","Rate limiting if payment is valid but request volume is excessive","Network timeout if ZK computation is delayed"],"whenToPreferThis":"Choose this endpoint when you need a cryptographic Merkle proof-of-inclusion from a ZK-based chain (Halo2/Nova/Plonky3) without requiring an account or subscription — ideal for one-off, pay-per-use inclusion verification. Prefer this over on-chain RPC calls when you want a compact, pre-computed verifiable proof rather than raw block data, and when you need trustless attestation compatible with ZK circuit pipelines.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:34:39.337Z","isFirstParty":false}