{ "id": "text-bytes-transcode", "name": "Strict explicit Unicode and Latin1 byte transcoder", "description": "WHEN TO USE: Convert caller-supplied Base64 text-file bytes between explicit UTF-8, UTF-16LE, UTF-16BE and reversible Latin1 byte mapping with strict BOM rules. Rejects malformed sequences and unrepresentable scalars without replacements. No charset detection, Windows-1252 aliases, normalization, newline conversion or plaintext echo.", "category": "structured", "priceUsd": "0.003", "pricingStatus": "proposed-unverified", "pricing": { "unit": "one successful operation call", "proposedNominalUsd": "0.003", "sixDecimalTokenBaseUnits": "3000", "subscription": false, "includesPayerWalletOrNetworkFees": false, "liveQuoteVerified": false, "condition": "Actual SDK challenge is authoritative only within the caller's explicit authorization; configured six-decimal token peg is an operator assertion, not a conversion guarantee." }, "intents": [ "Convert supplied file bytes to an explicitly declared importer encoding", "Strictly transcode UTF-8 UTF-16 and true Latin1 byte-map data" ], "whenToUse": [ "Know both source and target encoding and explicit initial-BOM policy" ], "whenNotToUse": [ "Guessing encodings, repairing mojibake, lossy replacement, newline conversion or Unicode normalization", "Windows-1252, ASCII aliases, ISO-8859-1 WHATWG label handling or arbitrary legacy code pages", "Blind transcoding of fixed byte-column files whose layout depends on original encoding", "Extracting archives, writing files, uploading, publishing, or changing external state" ], "capabilities": [ "Profile strict-unicode-latin1-bytes-v1; byte N maps exactly to U+00NN including 0x80–0x9F", "Remove at most one declared initial BOM; preserve subsequent U+FEFF; opposite UTF-16 BOM rejected", "Strict scalar validation and exact target-size preflight before output allocation", "Deterministic supplied-input-only bytes; no network, clock, randomness or decompression" ], "limits": { "inputBytes": 100000, "outputBytes": 400000, "jsonNodes": 12000, "depth": 20, "profile": "strict-unicode-latin1-bytes-v1", "decodedInputBytes": 60000, "scalars": 60000, "encodedOutputBytes": 120003 }, "related": [ "base64-convert", "blob-decode", "multipart-form-encode" ], "errorCodes": [ "INPUT_LIMIT", "OUTPUT_LIMIT", "COMPLEXITY_LIMIT", "INVALID_JSON", "INVALID_NUMBER", "INVALID_UNICODE", "UNSAFE_KEY", "INVALID_BASE64", "PAYLOAD_LIMIT", "BOM_POLICY", "BOM_MISMATCH", "BOM_FORBIDDEN", "BOM_REQUIRED", "INVALID_TEXT_BYTES", "SCALAR_LIMIT", "UNREPRESENTABLE_SCALAR", "TEXT_OUTPUT_LIMIT" ], "requirementsProfile": { "format": "declared-requirements-v1", "facts": { "execution.suppliedCode": false, "execution.remoteMutation": false, "execution.llmInference": false, "execution.paidMcp": false, "verification.semanticTruth": false, "verification.sourceAuthenticity": false, "verification.liveVulnerabilities": false, "numbers.arbitraryPrecisionJson": false, "numbers.model": "ieee754-binary64", "privacy.requestBodyPersisted": false, "execution.deterministic": true, "execution.networkAccess": false, "privacy.resultBodyPersisted": false, "payment.x402": true, "payment.mpp": true, "operation.id": "text-bytes-transcode", "operation.category": "structured", "limit.httpRequestBytes": 131072, "limit.requestBytes": 100000, "limit.responseBytes": 524288, "limit.resultBytes": 400000, "limit.jsonDepth": 20, "limit.jsonNodes": 12000, "textCodec.profile": "strict-unicode-latin1-bytes-v1", "textCodec.maxInputBytes": 60000, "textCodec.maxOutputBytes": 120003, "textCodec.maxScalars": 60000, "textCodec.encodingDetection": false, "textCodec.malformedReplacement": false, "textCodec.unicodeNormalization": false, "textCodec.newlineNormalization": false, "textCodec.windows1252": false, "textCodec.latin1Meaning": "byte-N-to-U+00NN", "textCodec.bomPolicy": "explicit-declared-codec-only", "input.data.maxLength": 80000 }, "unknownPolicy": "Undeclared requirements are unknown, never compatible. Matching declared facts does not establish semantic fit or input validity.", "preflight": "/preflight" }, "documentation": "/reference/tools/text-bytes-transcode.md", "serviceContract": "/reference/services/text-bytes-transcode.json", "errors": [ { "status": 400, "meaning": "Malformed JSON, missing/invalid idempotency key, or payment identifier mismatch", "retry": "Correct the request before payment" }, { "status": 402, "meaning": "Payment challenge or rejected payment", "retry": "Use official protocol SDK; inspect payment outcome before another payment" }, { "status": 409, "meaning": "Idempotency conflict, duplicate proof, or PAYMENT_UNCERTAIN", "retry": "Keep original key, body, and proof; reconcile uncertainty with operator; never blindly repay" }, { "status": 413, "meaning": "Input or generated output too large", "retry": "Reduce input; no payment attempted for validation failure" }, { "status": 415, "meaning": "Unsupported media type or compression", "retry": "Send uncompressed application/json" }, { "status": 422, "meaning": "Schema or service-specific semantic validation failure", "retry": "Correct input using returned error code; no payment attempted" }, { "status": 429, "meaning": "Request/payment-attempt rate exceeded", "retry": "Wait for rate limit window; preserve existing payment identity" }, { "status": 503, "meaning": "Payment configuration/provider/state unavailable, or live DNS preparation failed before settlement", "retry": "Check readiness; DNS preparation failures may retry the identical key/body/credential only; uncertainty requires reconciliation" } ], "numericPrecision": "JavaScript IEEE-754 numbers; use strings for large integer IDs/exact decimals where the schema accepts strings. No lossless numeric parsing.", "paymentWorkflow": { "discoveryOnly": false, "supportedProtocols": [ "x402", "mpp" ], "x402": { "credentialHeader": "PAYMENT-SIGNATURE", "challengeHeader": "PAYMENT-REQUIRED", "receiptHeader": "PAYMENT-RESPONSE", "version": 2, "scheme": "exact", "paymentIdentifier": "payment-identifier extension MUST equal the HTTP Idempotency-Key", "sdk": "@x402/core with @x402/evm" }, "mpp": { "supported": true, "credentialHeader": "Authorization", "challengeHeader": "WWW-Authenticate", "receiptHeader": "Payment-Receipt", "method": "tempo", "intent": "charge", "sdk": "mppx", "tokenDecimals": 6 }, "steps": [ "Check configured readiness and the exact service schema", "Generate a fresh random Idempotency-Key for this operation; never use a discovery probe fixture for purchases", "Send valid input without a credential to obtain the official protocol challenge", "Use the official SDK and authorized wallet to fulfill the challenge", "Retry only with identical key, body, protocol and credential", "On PAYMENT_UNCERTAIN stop and request operator reconciliation; never blindly pay again" ], "versionedRetries": "Request fingerprint includes service release version. Retries across a version upgrade can conflict; coordinate upgrades outside the 24-hour replay window and reconcile pending attempts.", "docs": "/llms.txt" }, "method": "POST", "paths": { "x402": "/v1/x402/text-bytes-transcode", "mpp": "/v1/mpp/text-bytes-transcode" }, "inputSchema": { "$schema": "https://json-schema.org/draft/2020-12/schema", "type": "object", "properties": { "data": { "type": "string", "maxLength": 80000 }, "from": { "type": "string", "enum": [ "utf8", "utf16le", "utf16be", "latin1-byte-map" ] }, "to": { "type": "string", "enum": [ "utf8", "utf16le", "utf16be", "latin1-byte-map" ] }, "inputBom": { "type": "string", "enum": [ "forbid", "strip-if-present", "require" ] }, "outputBom": { "type": "string", "enum": [ "omit", "add" ] } }, "required": [ "data", "from", "to", "inputBom", "outputBom" ], "additionalProperties": false }, "outputSchema": { "type": "object", "required": [ "operation", "version", "result", "provenance" ], "properties": { "operation": { "const": "text-bytes-transcode", "type": "string" }, "version": { "const": "0.29.0", "type": "string" }, "result": { "$schema": "https://json-schema.org/draft/2020-12/schema", "type": "object", "properties": { "encoding": { "type": "string", "const": "base64" }, "data": { "type": "string", "maxLength": 160004 }, "byteLength": { "type": "integer", "minimum": 0, "maximum": 120003 }, "scalarCount": { "type": "integer", "minimum": 0, "maximum": 60000 }, "inputBomRemoved": { "type": "boolean" }, "outputBomAdded": { "type": "boolean" }, "sha256": { "type": "string", "pattern": "^[a-f0-9]{64}$" } }, "required": [ "encoding", "data", "byteLength", "scalarCount", "inputBomRemoved", "outputBomAdded", "sha256" ], "additionalProperties": false }, "provenance": { "type": "object", "required": [ "inputSha256", "outputSha256", "deterministic", "externalRequests" ], "properties": { "inputSha256": { "type": "string", "pattern": "^[a-f0-9]{64}$" }, "outputSha256": { "type": "string", "pattern": "^[a-f0-9]{64}$" }, "deterministic": { "const": true }, "externalRequests": { "const": 0 } } } }, "additionalProperties": false }, "exampleInput": { "data": "Q2Fm6Q==", "from": "latin1-byte-map", "to": "utf16le", "inputBom": "forbid", "outputBom": "add" }, "exampleResponse": { "operation": "text-bytes-transcode", "version": "0.29.0", "result": { "encoding": "base64", "data": "//5DAGEAZgDpAA==", "byteLength": 10, "scalarCount": 4, "inputBomRemoved": false, "outputBomAdded": true, "sha256": "01a70ae1886925565f6859a2bf3ec11488db5153aed684cbaec5f3873c0a2a86" }, "provenance": { "inputSha256": "04a6037740625343feb9dfbc365b5bc359eb05c2228270e4b740539df50ee265", "outputSha256": "82b19e8ba47311b957cb023deefd906f4c8f2f4a6727ce1427b32da3f2ea0a3b", "deterministic": true, "externalRequests": 0 } }, "requiredHeaders": { "Content-Type": "application/json", "Idempotency-Key": "random 16–128 character operation identifier" }, "fixedExample": "/reference/examples/text-bytes-transcode.json", "execution": { "deterministic": true, "externalRequests": 0, "maxExternalRequests": 0, "resultSnapshotPersisted": false, "fixedExampleIsIllustrativeSnapshot": false, "requiresPayment": true, "supportsMcpExecution": false }, "releaseSnapshot": { "format": "static-release-reference-v1", "sourceVersion": "0.29.0", "sourceRegistrySha256": "a2b5ec09bf6c38b9d2879d746a4fded374f5928b445377b0270ef6aa8e6cac65", "generatedAt": "2026-10-06T15:38:00Z", "releaseAcceptance": "not-verified-by-generator", "runtimeReadiness": "not-evaluated", "livePaymentsVerified": false, "indexingVerified": false, "apiOrigin": null, "notice": "Build-time release reference. Runtime readiness, deployment, payment settlement and external indexing are not evaluated here. Prices are proposed; this file cannot authorize execution or payment." } }