{ "id": "svg-bar-chart-compose", "name": "Compose a fixed SVG bar chart", "description": "Turn 1–24 supplied labeled nonnegative integer values and an explicit domain into an inert accessible horizontal bar-chart SVG, plain-text alternative and exact geometry.", "category": "structured", "priceUsd": "0.005", "pricingStatus": "proposed-unverified", "pricing": { "unit": "one successful operation call", "proposedNominalUsd": "0.005", "sixDecimalTokenBaseUnits": "5000", "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": [ "Generate a standalone SVG bar chart from computed counts", "Create a deterministic horizontal chart and text alternative" ], "whenToUse": [ "Already-computed nonnegative integer rows with a caller-selected zero-based domain" ], "whenNotToUse": [ "Aggregating data, inferring domains, negative/fractional values, log scales, stacked bars or time axes", "Rendering, printing, writing files, uploading, publishing, or changing remote state", "Supplying custom SVG, HTML, CSS, fonts, images, links, scripts or external resources", "Guaranteeing font appearance, printer alignment, source authenticity or accessibility compliance" ], "capabilities": [ "Ordered fixed geometry, visible exact values, title/description and caller-prefixed accessible IDs", "Escaped literal text in an original fixed inert SVG serializer", "Deterministic supplied-input-only artifact with no network, clock or randomness" ], "limits": { "inputBytes": 100000, "outputBytes": 400000, "jsonNodes": 12000, "depth": 20, "profile": "svg-nonnegative-horizontal-bars-v1", "rows": 24, "labelAsciiCharacters": 16, "titleScalars": 80, "idPrefixCharacters": 32, "maximumValue": 1000000000, "widthPixels": 720, "maximumProjectedResultBytes": 30560 }, "related": [ "decimal-distribution-summarize", "records-aggregate", "label-sheet-compose" ], "errorCodes": [ "INPUT_LIMIT", "OUTPUT_LIMIT", "COMPLEXITY_LIMIT", "INVALID_JSON", "INVALID_NUMBER", "INVALID_UNICODE", "UNSAFE_KEY", "TITLE_LIMIT", "EMPTY_TITLE", "INVALID_TEXT_CONTROL", "VALUE_OUTSIDE_DOMAIN" ], "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": "svg-bar-chart-compose", "operation.category": "structured", "limit.httpRequestBytes": 131072, "limit.requestBytes": 100000, "limit.responseBytes": 524288, "limit.resultBytes": 400000, "limit.jsonDepth": 20, "limit.jsonNodes": 12000, "svgChart.profile": "svg-nonnegative-horizontal-bars-v1", "svgChart.maxRows": 24, "svgChart.maxValue": 1000000000, "svgChart.maxTitleScalars": 80, "svgChart.maxLabelAsciiBytes": 16, "svgChart.domainOrigin": 0, "svgChart.domainMaximumSupplied": true, "svgChart.geometryArithmetic": "bounded-integer-floor", "svgChart.titleAdvance": "scalar-count-times-three-fifths-em", "svgChart.svgWhitespace": "xml-space-preserve", "svgChart.customMarkup": false, "svgChart.externalResources": false, "svgChart.accessibilityCertified": false, "svgChart.fontRenderingVerifiedAcrossConsumers": false, "input.title.maxLength": 160, "input.title.minLength": 1, "input.domainMax.maximum": 1000000000, "input.domainMax.minimum": 1, "input.rows.maxItems": 24, "input.rows.minItems": 1 }, "unknownPolicy": "Undeclared requirements are unknown, never compatible. Matching declared facts does not establish semantic fit or input validity.", "preflight": "/preflight" }, "documentation": "/reference/tools/svg-bar-chart-compose.md", "serviceContract": "/reference/services/svg-bar-chart-compose.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/svg-bar-chart-compose", "mpp": "/v1/mpp/svg-bar-chart-compose" }, "inputSchema": { "$schema": "https://json-schema.org/draft/2020-12/schema", "type": "object", "properties": { "idPrefix": { "type": "string", "pattern": "^[A-Za-z][A-Za-z0-9_-]{0,31}$" }, "title": { "type": "string", "minLength": 1, "maxLength": 160, "description": "1–80 Unicode scalars; no controls or XML-disallowed characters" }, "domainMax": { "type": "integer", "minimum": 1, "maximum": 1000000000 }, "rows": { "minItems": 1, "maxItems": 24, "type": "array", "items": { "type": "object", "properties": { "label": { "type": "string", "minLength": 1, "maxLength": 16, "pattern": "^[\\x20-\\x7e]+$" }, "value": { "type": "integer", "minimum": 0, "maximum": 1000000000 } }, "required": [ "label", "value" ], "additionalProperties": false } } }, "required": [ "idPrefix", "title", "domainMax", "rows" ], "additionalProperties": false }, "outputSchema": { "type": "object", "required": [ "operation", "version", "result", "provenance" ], "properties": { "operation": { "const": "svg-bar-chart-compose", "type": "string" }, "version": { "const": "0.29.0", "type": "string" }, "result": { "$schema": "https://json-schema.org/draft/2020-12/schema", "type": "object", "properties": { "svg": { "type": "string" }, "textAlternative": { "type": "string" }, "bars": { "minItems": 1, "maxItems": 24, "type": "array", "items": { "type": "object", "properties": { "inputIndex": { "type": "integer", "minimum": 0, "maximum": 23 }, "x": { "type": "number", "const": 180 }, "y": { "type": "integer", "minimum": 32, "maximum": 768 }, "width": { "type": "integer", "minimum": 0, "maximum": 400 }, "height": { "type": "number", "const": 24 } }, "required": [ "inputIndex", "x", "y", "width", "height" ], "additionalProperties": false } } }, "required": [ "svg", "textAlternative", "bars" ], "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": { "idPrefix": "sales", "title": "Units", "domainMax": 10, "rows": [ { "label": "A", "value": 5 }, { "label": "B", "value": 10 } ] }, "exampleResponse": { "operation": "svg-bar-chart-compose", "version": "0.29.0", "result": { "svg": "UnitsDomain 0 to 10. A: 5; B: 10.UnitsA5B10\n", "textAlternative": "Units. Domain 0 to 10. A: 5; B: 10.", "bars": [ { "inputIndex": 0, "x": 180, "y": 32, "width": 200, "height": 24 }, { "inputIndex": 1, "x": 180, "y": 64, "width": 400, "height": 24 } ] }, "provenance": { "inputSha256": "973f898ca2fb35ca2355c298cede3e4fe15e672477d8181c49a61671c6c220b6", "outputSha256": "a8462700e0da6472b73dddabd13ff57e87822365aa8209868de4fe65ae424fce", "deterministic": true, "externalRequests": 0 } }, "requiredHeaders": { "Content-Type": "application/json", "Idempotency-Key": "random 16–128 character operation identifier" }, "fixedExample": "/reference/examples/svg-bar-chart-compose.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." } }