{"id":"721bd639-211b-4636-805e-c88b6305f6bd","shortId":"VKQTkk","kind":"mpp","title":"Wolfram|Alpha spoken-language answers via MPP micropayment on Tempo L2","tagline":"Wolfram|Alpha spoken-language answers via MPP micropayment on Tempo L2","description":"This endpoint provides access to Wolfram|Alpha's Spoken Result API through the Locus MPP (Micropayment Protocol). It accepts a natural-language query and returns a textual answer phrased as it would be spoken aloud — suitable for voice assistants, chatbots, or any application that needs a human-readable sentence rather than raw data.\n\nThe endpoint is part of a broader Wolfram|Alpha service suite hosted at wolframalpha.mpp.paywithlocus.com, which also exposes Short Answer, Full Results, and Simple (Image) endpoints. Each call costs 55,000 base units of pathUSD (6 decimals), i.e., $0.055 per query, settled on Tempo L2. Payment uses the MPP charge intent — a one-shot payment per request.\n\nThe request body is a JSON object with a required field `i` (the query string) and optional `units` (\"metric\" or \"imperial\") and `timeout` (max processing seconds, default 5). The probe returned 404 on HEAD/GET, which is expected because this is a POST-only endpoint. The OpenAPI spec confirms POST as the supported method and the 402 challenge is documented in the spec's response definitions.","tags":["computation","math","science","knowledge-engine"],"capabilities":["natural-language-query","spoken-answer","computational-knowledge","math","science","geography","history","nutrition","finance","unit-conversion","micropayment-per-call","tempo-l2-settlement"],"categories":["data","knowledge","search"],"synonyms":["wolfram alpha","computational engine","knowledge engine","spoken answer API","wolfram spoken","locus mpp wolfram","wolfram alpha voice","wolfram query"],"warnings":["Probe did not capture a 402 challenge because only HEAD/GET were attempted; endpoint is POST-only","No example response available — response format is inferred as plain text from Wolfram|Alpha documentation","Currency address 0x20c000000000000000000000b9537d11c60e8b50 assumed to be pathUSD with 6 decimals based on Tempo L2 convention"],"endpointUrl":"https://wolframalpha.mpp.paywithlocus.com/wolframalpha/spoken","protocol":"mpp","transport":"http","auth":{"type":"mpp","details":{"realm":"wolframalpha.mpp.paywithlocus.com","intent":"charge","method":"tempo","service_methods":{"tempo":{"assets":["0x20c000000000000000000000b9537d11c60e8b50"],"intents":["charge"]}}}},"qualityScore":"0.600","qualityRationale":"OpenAPI spec is complete with schema and pricing details, but the endpoint returned 404 on HEAD/GET (expected for POST-only). No example response was captured, and crawled pages only returned generic 'not found' messages. Pricing and request schema are well-documented via the 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