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API Reference

Create a File

Stream one multipart user_data or batch File into persistent storage.

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Stream one multipart user_data or batch File into persistent storage.

Endpoint

POST /v1/files
Base URL
https://runapi.ai
API version
v1
Authentication
Authorization: Bearer YOUR_API_KEY
02

Request

JSON body

Send values only in the listed request location.

multipart/form-data2 fields
filestring
Required

File bytes to store.

purposestring
Required

File purpose.

Allowed values: user_data, batch Default: user_data
03

Success response

HTTP 200

POST /v1/files

JSON 
{
  "bytes": 1048576,
  "created_at": 1785196800,
  "filename": "knowledge.pdf",
  "id": "file_abc123",
  "object": "file",
  "purpose": "user_data"
}
04

Error response (401)

HTTP 401
Response schema
JSON 
{
  "additionalProperties": true,
  "properties": {
    "error": {
      "additionalProperties": true,
      "properties": {
        "code": {
          "type": [
            "string",
            "null"
          ]
        },
        "message": {
          "type": "string"
        },
        "param": {
          "type": [
            "string",
            "null"
          ]
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "message",
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "error"
  ],
  "type": "object"
}

Response example

JSON 
{
  "error": {
    "code": "authentication_error",
    "message": "Missing API key",
    "param": null,
    "type": "authentication_error"
  }
}
05

Error response (400)

HTTP 400
Response schema
JSON 
{
  "additionalProperties": true,
  "properties": {
    "error": {
      "additionalProperties": true,
      "properties": {
        "code": {
          "type": [
            "string",
            "null"
          ]
        },
        "message": {
          "type": "string"
        },
        "param": {
          "type": [
            "string",
            "null"
          ]
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "message",
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "error"
  ],
  "type": "object"
}

Response example

JSON 
{
  "error": {
    "code": "invalid_request_error",
    "message": "Malformed request",
    "param": null,
    "type": "invalid_request_error"
  }
}
06

Error response (404)

HTTP 404
Response schema
JSON 
{
  "additionalProperties": true,
  "properties": {
    "error": {
      "additionalProperties": true,
      "properties": {
        "code": {
          "type": [
            "string",
            "null"
          ]
        },
        "message": {
          "type": "string"
        },
        "param": {
          "type": [
            "string",
            "null"
          ]
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "message",
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "error"
  ],
  "type": "object"
}

Response example

JSON 
{
  "error": {
    "code": "not_found",
    "message": "File not found",
    "param": null,
    "type": "invalid_request_error"
  }
}
07

Error response (409)

HTTP 409
Response schema
JSON 
{
  "additionalProperties": true,
  "properties": {
    "error": {
      "additionalProperties": true,
      "properties": {
        "code": {
          "type": [
            "string",
            "null"
          ]
        },
        "message": {
          "type": "string"
        },
        "param": {
          "type": [
            "string",
            "null"
          ]
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "message",
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "error"
  ],
  "type": "object"
}

Response example

JSON 
{
  "error": {
    "code": "upload_state_conflict",
    "message": "Upload state conflict",
    "param": null,
    "type": "invalid_request_error"
  }
}
08

Error response (413)

HTTP 413
Response schema
JSON 
{
  "additionalProperties": true,
  "properties": {
    "error": {
      "additionalProperties": true,
      "properties": {
        "code": {
          "type": [
            "string",
            "null"
          ]
        },
        "message": {
          "type": "string"
        },
        "param": {
          "type": [
            "string",
            "null"
          ]
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "message",
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "error"
  ],
  "type": "object"
}

Response example

JSON 
{
  "error": {
    "code": "file_too_large",
    "message": "File size exceeds the maximum allowed size",
    "param": "file",
    "type": "invalid_request_error"
  }
}
09

Error response (422)

HTTP 422
Response schema
JSON 
{
  "additionalProperties": true,
  "properties": {
    "error": {
      "additionalProperties": true,
      "properties": {
        "code": {
          "type": [
            "string",
            "null"
          ]
        },
        "message": {
          "type": "string"
        },
        "param": {
          "type": [
            "string",
            "null"
          ]
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "message",
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "error"
  ],
  "type": "object"
}

Response example

JSON 
{
  "error": {
    "code": "invalid_upload",
    "message": "Upload request rejected",
    "param": null,
    "type": "invalid_request_error"
  }
}
10

Error response (502)

HTTP 502
Response schema
JSON 
{
  "additionalProperties": true,
  "properties": {
    "error": {
      "additionalProperties": true,
      "properties": {
        "code": {
          "type": [
            "string",
            "null"
          ]
        },
        "message": {
          "type": "string"
        },
        "param": {
          "type": [
            "string",
            "null"
          ]
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "message",
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "error"
  ],
  "type": "object"
}

Response example

JSON 
{
  "error": {
    "code": "storage_write_failed",
    "message": "File storage failed",
    "param": null,
    "type": "server_error"
  }
}
11

cURL example

CURL 
curl -X POST https://runapi.ai/v1/files \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -F 'file=@./knowledge.pdf' \
  -F 'purpose=user_data'