{"uid":"cap_PDb5OPnJ98OQGasRpLU60","slug":"signalharness-prompt-structure-analyzer-0c9e50d1","name":"SignalHarness Prompt Structure Analyzer","description":"Explore 330 pay-per-call x402 API services and 27 agent-native digital products, with Base USDC pricing, secure Polar checkout, and free discovery.","url":"https://signalharness.ai/api/agent/services/prompt_structure_analyze/invoke","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"request_json":{"type":"string","maxLength":65536,"minLength":2}}},"responseSchema":{"type":"json","example":{"replay":false,"result":{"warnings":["Verify the caller-supplied data before relying on this result."],"service_id":"prompt_structure_analyze","analysis_json":"{\"example\":\"schema-valid caller-supplied data\"}","evidence_scope":"caller_supplied_data"},"status":"succeeded","receipt":{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","usage":[],"status":"succeeded","network":"eip155:8453","artifacts":[],"endedAtMs":0,"latencyMs":0,"paymentId":"example-payment","receiptId":"example-receipt","requestId":"example-request","serviceId":"prompt_structure_analyze","executionId":"example-execution","startedAtMs":0,"amountAtomic":"10000","resultSha256":"6b047b91ee7b7d1e3a2b619cfc346765179da744159ce369408d85730cb2f0df","serviceVersion":"1.0.0","settlementReference":"0x0000000000000000000000000000000000000000000000000000000000000000"},"artifacts":[],"requestId":"example-request","executionId":"example-execution"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_-ilP9JO4P3O7XfSKwcFCW","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Analyzes the structure of a prompt or JSON payload and returns structural analysis with warnings and evidence scope metadata.","exampleAgentPrompt":"Can you analyze the structure of this prompt JSON and flag any structural issues or warnings: '{\"system\":\"You are a helpful assistant.\",\"user\":\"Summarize the following text:\",\"context\":\"...\"}' ?","exampleUseCases":[{"title":"Pre-flight prompt quality check","prompt":"Before I send this prompt to my LLM pipeline, analyze its structure and tell me if there are any warnings or issues: '{\"role\":\"system\",\"content\":\"You are an expert coder. Help the user debug their Python script.\"}'"},{"title":"Agent prompt schema auditing","prompt":"I'm building an agent and want to make sure my prompt payloads are structurally sound. Can you run a structural analysis on this request JSON: '{\"messages\":[{\"role\":\"user\",\"content\":\"What is the capital of France?\"}],\"model\":\"gpt-4\"}'?"},{"title":"Debugging malformed prompt payload","prompt":"Something seems off with how I'm formatting my prompts. Can you analyze the structure of this JSON and tell me what looks wrong or suspicious: '{\"prompt\":\"Translate this\",\"lang\":\"fr\",\"extra\":{}}' ?"}],"resultDescription":"Returns a JSON object containing an analysis_json field with structural findings, a list of warnings about the caller-supplied data, an evidence_scope label indicating data provenance ('caller_supplied_data'), and a full payment receipt including network, asset, amounts, latency, and execution IDs.","failureModes":["Input JSON string is malformed or below minimum length (2 chars) — request rejected","Payload exceeds 65536 character limit — request rejected with size error","Payment not processed — 402 response requiring USDC payment on Base network","Service unavailable — execution fails with non-succeeded status in receipt","Empty or null request_json field — validation error returned"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call structural analysis of a prompt or JSON payload without setting up a full validation pipeline. Ideal for agent systems that want to audit prompt quality, detect structural anomalies, or log evidence scope before forwarding prompts downstream. At $0.01 USDC per call it is cost-effective for high-frequency pre-flight checks.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T13:11:11.572Z","isFirstParty":false}