{"uid":"cap_SobiOwFhYADzlnvcSqEnX","slug":"signalharness-prompt-template-render-validate-f3d5a578","name":"SignalHarness Prompt Template Render & Validate","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_template_render_validate/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_template_render_validate","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_template_render_validate","executionId":"example-execution","startedAtMs":0,"amountAtomic":"5000","resultSha256":"f4b52f3c4405d04c04df13f52a8b5abc443a1f21724f5d783ed644a3592363aa","serviceVersion":"1.0.0","settlementReference":"0x0000000000000000000000000000000000000000000000000000000000000000"},"artifacts":[],"requestId":"example-request","executionId":"example-execution"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_G8Vs4oeFF1zcZGqNHM6zj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Renders and validates a prompt template from caller-supplied JSON, returning analysis and any warnings about the rendered result.","exampleAgentPrompt":"Can you validate and render this prompt template JSON for me to make sure it's well-formed and catch any warnings before I use it in my pipeline: '{\"system\": \"You are a helpful assistant.\", \"user\": \"Summarize {{text}}\"}'?","exampleUseCases":[{"title":"Pre-flight check for LLM pipeline","prompt":"Before I deploy this prompt template to production, validate and render this JSON to check for any issues or warnings: '{\"system\": \"You are a code reviewer.\", \"user\": \"Review this code: {{code}}\"}'"},{"title":"Debug broken agent prompt template","prompt":"My agent prompt template keeps behaving oddly — can you render and validate this JSON to see if there are structural problems: '{\"role\": \"assistant\", \"instructions\": \"Summarize the following: {{input}}\"}'?"},{"title":"Validate dynamically generated template","prompt":"I just auto-generated this prompt template JSON from user input — please validate and render it to catch any warnings before passing it to the LLM: '{\"task\": \"translate\", \"target_lang\": \"{{lang}}\", \"text\": \"{{content}}\"}'"}],"resultDescription":"Returns a JSON object with a status field ('succeeded'), an analysis_json string containing structured analysis of the rendered template, a list of warnings (e.g. about caller-supplied data reliability), an evidence_scope field, and a full receipt including payment details, latency, service version, and a SHA-256 hash of the result.","failureModes":["Invalid or malformed request_json string causes parsing failure","request_json exceeds 65536 character limit returns error","Missing required request_json field returns validation error","Caller-supplied data flagged with warnings rather than hard failure","Network or payment settlement issues may cause receipt status anomalies"],"whenToPreferThis":"Choose this endpoint when you need to validate and render a prompt template expressed as JSON before using it in an LLM pipeline or agent workflow, particularly when you want structured warnings and analysis rather than just a parse check. It is especially useful in agentic systems that dynamically generate prompt templates and need a pre-flight validation step to catch issues early.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T13:06:35.030Z","isFirstParty":false}