{"id":"f842a2a7-bbe5-4a40-8e61-df96b1521ef5","shortId":"sbJqJ5","kind":"mpp","title":"Grok-4 chat completions augmented with live web search, paid per call via Locus MPP on Tempo L2.","tagline":"Grok-4 chat completions augmented with live web search, paid per call via Locus MPP on Tempo L2.","description":"This endpoint provides chat completions powered by xAI's Grok-4 family models with integrated web search capabilities. When you send a conversation to `/grok/web-search`, the model can query the live web to ground its responses in current information. You can constrain searches to specific domains (up to 5 allowed or 5 excluded) via the `search_parameters` field. Supported models include `grok-4-0709`, `grok-4-1-fast-reasoning`, and `grok-4-1-fast-non-reasoning`.\n\nPayment is handled through the Locus Micropayment Protocol (MPP) settling on Tempo L2 in pathUSD. Pricing is dynamic, estimated at roughly $0.01–$0.50 per request depending on model choice and token usage. The request schema follows an OpenAI-compatible chat completions format with `model`, `messages`, optional `temperature` (0.0–2.0), and `max_tokens` parameters.\n\nThis endpoint is part of a broader Grok service suite hosted at `grok.mpp.paywithlocus.com` that also offers plain chat completions, X/Twitter search, code execution, image generation/editing, and text-to-speech — each at its own path. Documentation is available at https://docs.x.ai for the underlying xAI API and https://beta.paywithlocus.com/mpp/grok.md for the MPP-specific integration.","tags":["llm","chat","x-search","web-search","image-generation","tts"],"capabilities":["web-search-augmented-chat","grok-4-models","openai-compatible-chat-format","domain-filtering","dynamic-pricing","tempo-l2-settlement","per-call-payment"],"categories":["llm","search"],"synonyms":["grok web search","xai web search","grok-4 search","live web chat","grounded llm","web-augmented chat completions","grok mpp","locus grok"],"warnings":["Probe returned 404 on HEAD and GET — endpoint is POST-only; liveness via MPP 402 challenge was not confirmed","Pricing is described as 'Dynamic (~$0.01–$0.50)' with no fixed amount; actual cost per call may vary significantly","No example response schema is provided in the OpenAPI spec","search_parameters is typed as string in the schema but described as an object with allowed_domains/excluded_domains — possible schema inaccuracy"],"endpointUrl":"https://grok.mpp.paywithlocus.com/grok/web-search","protocol":"mpp","transport":"http","auth":{"type":"mpp","details":{"realm":"grok.mpp.paywithlocus.com","intent":"charge","method":"tempo","service_methods":{"tempo":{"assets":["0x20c000000000000000000000b9537d11c60e8b50"],"intents":["charge"]}}}},"qualityScore":"0.550","qualityRationale":"The OpenAPI spec provides a clear schema, model list, pricing guidance, and documentation links. However, the probe did not capture a live 402 challenge on HEAD/GET (the endpoint is POST-only, so 404 on HEAD/GET is expected), no example response is available, and all crawled pages returned 404 with no additional documentation content. Pricing is described as dynamic with a wide 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