{"uid":"cap_gS-FZymUUTBAIUujQyU8e","slug":"semantic-web-diff-99fb5102","name":"Semantic Web Diff","description":"Compare two webpage versions and return only meaningful content changes as structured JSON. Filters cosmetic DOM churn, tracking IDs, timestamps, and other noise.","url":"https://i3p3mgbsn54dvlivnk6wbumal40eqtsn.lambda-url.us-east-1.on.aws/v1/semantic-web-diff?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_a813ENQg9zpFObUJYLzam","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Compares two webpage versions and returns only meaningful content changes as structured JSON, filtering out cosmetic DOM noise, tracking IDs, and timestamps.","exampleAgentPrompt":"Compare these two HTML snapshots of the TechCrunch homepage from Monday and today, and tell me what content actually changed — ignore any tracking IDs, timestamps, or layout tweaks, just show me the real editorial differences as structured JSON.","exampleUseCases":[{"title":"Price change monitoring on product page","prompt":"Here are two HTML versions of this product page from last Tuesday and today — can you diff them and tell me if the price, availability, or product description actually changed? Filter out any tracker noise."},{"title":"News headline change detection","prompt":"I have two snapshots of the BBC news homepage taken 6 hours apart. Compare them and show me which headlines were added, removed, or edited — skip any cosmetic or timestamp-only changes."},{"title":"Competitor landing page audit","prompt":"I saved our competitor's landing page HTML last month and again today. Run a semantic diff on them and give me a structured breakdown of any meaningful copy, offer, or feature changes they made."}],"resultDescription":"A structured JSON object listing only meaningful content changes between the two webpage versions, categorized by type (additions, deletions, modifications), with the relevant text excerpts — excluding cosmetic DOM churn, tracking IDs, timestamps, and other noise artifacts.","failureModes":["Input HTML is malformed or too large, causing parse errors","Both versions are identical after noise filtering, returning an empty diff","One or both page snapshots are missing or empty","Non-HTML content passed as input","Rate limiting or payment failure via x402 protocol"],"whenToPreferThis":"Choose this endpoint when you need to monitor or audit real content changes between two webpage snapshots and want noise-free, structured results. It is especially valuable over raw HTML diffing tools when tracking editorial changes, price updates, or feature announcements — anywhere cosmetic DOM churn, ad injection, or tracking pixel changes would pollute a naive diff.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T12:35:12.765Z","isFirstParty":false,"canonicalSlug":"semantic-web-diff-99fb5102"}