{"uid":"cap_OLH8nQWpiDvTk4p9HRBzA","slug":"pennyrail-json-canonicalize-172901d3","name":"PennyRail JSON Canonicalize","description":"Machine-readable settlement service","url":"https://pennyrail.vercel.app/api/tools/json-canonicalize?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"hello":{"type":"string"}}},"responseSchema":{"type":"object","additionalProperties":true},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_JgpceKUDrnCIyHRp8K7QS","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts a JSON object into its canonical (deterministic, normalized) string representation","exampleAgentPrompt":"Can you canonicalize this JSON object for me so I get a deterministic, normalized string I can hash or sign: {\"hello\": \"world\"}?","exampleUseCases":[{"title":"Consistent JSON hashing before signing","prompt":"I need to canonicalize this JSON payload before I sign it — can you run {\"hello\": \"mytoken\"} through the JSON canonicalize service so the hash is always consistent?"},{"title":"Normalizing API response for comparison","prompt":"Take this JSON object {\"hello\": \"response123\"} and give me its canonical form so I can compare it deterministically against another payload."},{"title":"Preparing JSON for settlement record","prompt":"I'm building a payment settlement flow and need a canonical JSON string for {\"hello\": \"settlement-abc\"} so the record is reproducible across systems — can you canonicalize it?"}],"resultDescription":"Returns a JSON object containing the canonicalized (deterministic, normalized) representation of the input JSON, with keys consistently ordered and whitespace standardized, suitable for hashing or digital signing.","failureModes":["Missing or malformed input JSON returns an error response","Non-string value for the 'hello' field may cause validation failure","Network timeout on the Vercel serverless deployment","Payment failure (insufficient USDC balance) blocks the request via x402 protocol"],"whenToPreferThis":"Choose this endpoint when you need a paid, on-demand JSON canonicalization service accessible via the x402 micropayment protocol, particularly in agent workflows that require deterministic JSON serialization for hashing, signing, or settlement record-keeping without standing up your own canonicalization infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T01:21:50.589Z","isFirstParty":false,"canonicalSlug":"pennyrail-json-canonicalize-172901d3"}