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      "nombre": "x402-v2-mint-pubmed-search.vercel.app/v1/…",
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      "que_hace": "[concierge custom] PubMed search via NCBI E-utilities (keyless). Query → count + idlist (retmax≤10) + optional title/journal/pubdate.",
      "semaforo": "peaje"
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      "semaforo": "peaje"
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      "que_hace": "[concierge json-pick] PubMed search via NCBI E-utilities (keyless). Query → count + idlist (retmax≤10) + optional title/journal/pubdate.",
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