{"uid":"cap_TZpFKBwLqKCFeE10ILZHD","slug":"signalharness-model-output-regression-compare-6d4b0115","name":"SignalHarness Model Output Regression Compare","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/model_output_regression_compare/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":"model_output_regression_compare","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":"model_output_regression_compare","executionId":"example-execution","startedAtMs":0,"amountAtomic":"25000","resultSha256":"61a816840107ad35a33c2014e6edfdef89b25d8dfb5d98573376bf5e8c0cbb36","serviceVersion":"1.0.0","settlementReference":"0x0000000000000000000000000000000000000000000000000000000000000000"},"artifacts":[],"requestId":"example-request","executionId":"example-execution"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.025","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":"$0.025/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.025","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.025","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_SJo17Qns1IB3LkwzVwsLj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.025","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Compares model outputs to detect regressions or differences between versions using caller-supplied data","exampleAgentPrompt":"Compare these two sets of model outputs and tell me if there's a regression — here's the JSON with my baseline predictions and the new model's predictions: {\"baseline\": [...], \"candidate\": [...]}","exampleUseCases":[{"title":"Post-fine-tune regression check","prompt":"I just fine-tuned my language model and I want to check if its outputs have regressed compared to the original — here's a JSON with 50 paired outputs from the baseline and the new version, can you run a regression comparison?"},{"title":"A/B model deployment validation","prompt":"Before I swap my production model to the new version, can you compare these two sets of predictions side-by-side and flag any quality regressions? I'll paste the JSON with both models' outputs."},{"title":"Scheduled model monitoring alert","prompt":"I'm getting alerts that my recommendation model might be drifting — can you analyze this JSON of recent outputs against my saved baseline to identify any regression patterns?"}],"resultDescription":"Returns a JSON analysis result containing a comparison of model outputs, any detected regressions or anomalies, warnings about data reliability (since inputs are caller-supplied), an evidence scope label, and a signed receipt with payment details, request/execution IDs, result SHA256 hash, and service metadata for auditability.","failureModes":["Invalid or malformed request_json payload returns validation error","request_json exceeding 65536 characters is rejected","Empty or too-short input (below 2 chars) is rejected","Caller-supplied data that doesn't match expected comparison schema may yield unreliable analysis with warnings","Payment failure on x402 protocol results in 402 response before execution","Network errors on Base chain may delay receipt settlement"],"whenToPreferThis":"Choose this endpoint when you need a pay-per-call, agent-native regression comparison for AI model outputs — particularly when you want an auditable receipt on Base blockchain and are operating in an x402 micropayment environment. Prefer it over custom scripts when you need on-demand, stateless model output comparison without standing up MLOps infrastructure, and when cost-per-call billing ($0.025 USDC) is preferable to subscription pricing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T19:00:50.362Z","isFirstParty":false}