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    "title": "PubMed & Europe PMC to Markdown (abstracts + OA full text)",
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            "description": "Europe PMC search syntax, same as on europepmc.org: keywords, phrases in quotes, `AND` / `OR` / `NOT`, fields such as `TITLE:`, `AUTH:`, `JOURNAL:`, `MESH:`, `PUB_TYPE:\"review\"`. Syntax guide: https://europepmc.org/searchsyntax"
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            "title": "Max articles",
            "minimum": 1,
            "maximum": 100000,
            "type": "integer",
            "description": "Maximum number of articles to store. Each stored article is one billing event, so this caps your cost.",
            "default": 100
          },
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          },
          "openAccessOnly": {
            "title": "Open-access articles only",
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          },
          "fromDate": {
            "title": "Published from",
            "type": "string",
            "description": "First publication date, `YYYY` or `YYYY-MM-DD`. Leave empty for no lower bound.",
            "default": ""
          },
          "toDate": {
            "title": "Published until",
            "type": "string",
            "description": "`YYYY` or `YYYY-MM-DD`. Leave empty for no upper bound.",
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            "title": "Sort",
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              "newest"
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          },
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            "title": "Max concurrency",
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            "type": "integer",
            "description": "Parallel API requests to Europe PMC. Keep it low to be polite.",
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          }
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                "type": "string",
                "format": "date-time",
                "example": "2025-01-08T00:00:00.000Z"
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