{"id":"ef7a0752-5982-4715-aa0c-a84dfba40685","shortId":"G5u5gx","kind":"mpp","title":"Grok chat completions with X (Twitter) search grounding via MPP micropayments","tagline":"Grok chat completions with X (Twitter) search grounding via MPP micropayments","description":"This endpoint provides access to xAI's Grok models with built-in X (formerly Twitter) search capabilities, served through the Locus MPP (Micropayment Protocol) gateway. It accepts a standard chat-completions-style request body with a model parameter (Grok-4 family required, e.g. grok-4-0709, grok-4-1-fast-reasoning, grok-4-1-fast-non-reasoning), a messages array, and optional temperature and max_tokens controls. The model searches X posts in real time to ground its responses in current social-media content, making it useful for tracking breaking news, trending topics, public sentiment, and live event commentary as discussed on X.\n\nThe endpoint is part of a broader Grok service hosted at grok.mpp.paywithlocus.com that also exposes chat, web-search, code-execution, image-generation, image-editing, and text-to-speech paths. Payment is per-call via the Tempo method (pathUSD on Tempo L2), with dynamic pricing described as approximately $0.01–$0.50 per request depending on model and token usage. The OpenAPI spec lists the currency address as 0x20c000000000000000000000b9537d11c60e8b50.\n\nNote: The probe did not capture a 402 challenge on HEAD or GET for this specific path (returned 404), which is expected since the endpoint only accepts POST. The OpenAPI schema is well-defined and the service infrastructure appears operational. Documentation references include https://docs.x.ai for the upstream xAI API and https://beta.paywithlocus.com/mpp/grok.md for Locus-specific integration details.","tags":["llm","chat","x-search","web-search","image-generation","tts"],"capabilities":["x-search","twitter-search","grok-4-chat","real-time-social-search","chat-completions","mpp-micropayment","tempo-settlement","streaming-capable"],"categories":["llm","search","social"],"synonyms":["Grok X search","Twitter search AI","xAI X search","Grok social media search","real-time tweet search","X post search LLM","Grok-4 X search","micropayment AI search"],"warnings":["Probe returned 404 on HEAD and GET — endpoint is POST-only; liveness not confirmed via 402 challenge","No response schema documented in the OpenAPI spec","Pricing is described as 'Dynamic (~$0.01–$0.50)' without exact per-token rates","No example response available from probe or crawl","External docs at https://beta.paywithlocus.com/mpp/grok.md and https://docs.x.ai were not crawled"],"endpointUrl":"https://grok.mpp.paywithlocus.com/grok/x-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":"0.600","qualityRationale":"The OpenAPI schema is detailed with clear request schemas, model names, and pricing guidance. However, the probe did not capture a live 402 challenge on this specific endpoint (POST-only path probed with HEAD/GET), no example response schema is provided, and crawled pages all returned 404 with no additional documentation content. Pricing is described qualitatively but not as a fixed 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