CSV join | agent view

The same page content and links, with explicit tool capabilities. Tools marked with an API can run directly through HTTP. Other tools require the browser interface or are not connected yet.

Tool capabilities

{
  "id": "csv-join",
  "category": "spreadsheet-tools",
  "built": true,
  "requirements": "Inner/left/full joins on explicit keys; duplicate-key cardinality warning and preview.",
  "implementation": {
    "fields": [
      {
        "key": "delimiter",
        "label": "CSV separator",
        "value": ",",
        "type": "select",
        "values": [
          ",",
          ";",
          "\t"
        ]
      },
      {
        "key": "key",
        "label": "Join column",
        "value": "id",
        "type": "text"
      },
      {
        "key": "type",
        "label": "Join",
        "value": "Inner",
        "type": "select",
        "values": [
          "Inner",
          "Left"
        ]
      },
      {
        "key": "other",
        "label": "Second CSV",
        "value": "",
        "type": "textarea"
      }
    ],
    "experience": {
      "automatic": true,
      "single": false,
      "label": "CSV",
      "placeholder": "name,score\nAda,98\nSam,92",
      "help": "Include a header row. Quote cells that contain commas or new lines. Results update as you type. Up to 1,000,000 characters.",
      "action": null
    },
    "mode": "automatic",
    "interactive": false
  },
  "execution": "POST /api/v1/tools/csv-join/run",
  "api": {
    "id": "csv-join",
    "name": "CSV join",
    "category": "spreadsheet-tools",
    "description": "Inner/left/full joins on explicit keys.",
    "notes": "",
    "human_path": "/en/spreadsheet-tools/csv-join/",
    "method": "POST",
    "endpoint": "/api/v1/tools/csv-join/run",
    "schema_url": "/api/v1/tools/csv-join",
    "input_schema": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "input": {
          "type": "string",
          "maxLength": 1000000,
          "default": "",
          "description": "Plain text input. File tools use files instead unless otherwise documented."
        },
        "options": {
          "type": "object",
          "additionalProperties": false,
          "properties": {
            "delimiter": {
              "type": "string",
              "description": "CSV separator",
              "default": ",",
              "enum": [
                ",",
                ";",
                "\t"
              ]
            },
            "key": {
              "type": "string",
              "description": "Join column",
              "default": "id"
            },
            "type": {
              "type": "string",
              "description": "Join",
              "default": "Inner",
              "enum": [
                "Inner",
                "Left"
              ]
            },
            "other": {
              "type": "string",
              "description": "Second CSV",
              "default": ""
            }
          }
        }
      }
    },
    "output_schema": {
      "type": "object",
      "required": [
        "tool",
        "result"
      ],
      "properties": {
        "tool": {
          "type": "string"
        },
        "result": {
          "type": "object",
          "required": [
            "text",
            "files"
          ],
          "properties": {
            "text": {
              "type": [
                "string",
                "null"
              ]
            },
            "data": {
              "description": "Parsed JSON when the textual result is JSON."
            },
            "name": {
              "type": "string"
            },
            "mime": {
              "type": "string"
            },
            "files": {
              "type": "array",
              "items": {
                "type": "object",
                "required": [
                  "name",
                  "mime",
                  "bytes",
                  "base64"
                ],
                "properties": {
                  "name": {
                    "type": "string"
                  },
                  "mime": {
                    "type": "string"
                  },
                  "bytes": {
                    "type": "integer"
                  },
                  "base64": {
                    "type": "string",
                    "contentEncoding": "base64"
                  }
                }
              }
            }
          }
        }
      }
    },
    "processing": "Server; same transformation code as browser tools",
    "limits": {
      "request_bytes": 8388608,
      "input_characters": 1000000,
      "files_bytes": 5242880,
      "max_files": 0,
      "timeout_seconds": 12
    }
  },
  "agent_processing": "Server; same transformation code as browser tools",
  "browser_agent": {
    "supported": true,
    "name": "run_current_tool",
    "discovery": "WebMCP on the human page in a supporting browser",
    "verification": "See audit/API-AUDIT.md; availability is not verification"
  }
}

Page guide

Inner/left/full joins on explicit keys.