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import re

def execute(input_data): """ Simulates the logic of an n8n Code node using Python. The input_data is expected to be a list of dictionaries (items).

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Args:
    input_data (list): A list where each element is a dictionary
                       representing an input item (node data).

Returns:
    list: A list of dictionaries representing the output items.
"""
# 1. Accessing Input Data
# In n8n, input_data[0] is often the first item.
if not input_data:
    # Handle case where no input items are provided
    return [{
        "originalTask": None,
        "modifiedTask": "Error: No input data provided.",
        "count": 0
    }]

# Access the JSON data of the first item
input_item = input_data[0]

# We access the 'task' property directly from the dictionary structure
user_task = input_item.get('task')

# 2. Core Logic (Example Data Processing)
processed_result = ""
word_count = 0

if user_task and isinstance(user_task, str):
    # Example 1: Convert the task to a Title-Case format
    # This is equivalent to the JavaScript logic:
    # userTask.toLowerCase().split(' ').map(...).join(' ')
    # Python's title() method does this easily.
    processed_result = user_task.title()

    # Example 2: Simple calculation (Word Count)
    # Use regex to split by any whitespace character, ensuring accuracy.
    words = re.split(r'\s+', user_task.strip())
    # Filter out empty strings that might result from extra spaces
    word_count = len([word for word in words if word])
else:
    processed_result = "No valid task string provided."

# 3. Output Result
# Python returns a list of dictionaries, matching the n8n output structure.
output_item = {
    # The original task we received
    "originalTask": user_task,
    # The result of our Python logic
    "modifiedTask": processed_result,
    # The calculated word count
    "count": word_count,
}

# The function must return a list of items (even if it's just one item)
return [output_item]

--- Example Usage (For local testing only) ---#

Mock Input Data structure similar to what n8n provides to the code node#

mock_input = [ {"task": "this is a test sentence for title case and counting"}, # Subsequent items would follow if you had multiple inputs ]

Run the function and print the result#

print(execute(mock_input))#

Add your workflow to the n8n library#

You can submit your workflows to n8n's template library.

n8n is working on a creator program, and developing a marketplace of templates. This is an ongoing project, and details are likely to change.

Refer to n8n Creator hub for information on how to submit templates and become a creator.

Self-hosted n8n: Use your own library#

In your environment variables, set N8N_TEMPLATES_HOST to the base URL of your API.

Endpoints#

Your API must provide the same endpoints and data structure as n8n's.

The endpoints are:

Method Path
GET /templates/workflows/<id>
GET /templates/search
GET /templates/collections/<id>
GET /templates/collections
GET /templates/categories
GET /health

Query parameters#

The /templates/search endpoint accepts the following query parameters:

Parameter Type Description
page integer The page of results to return
rows integer The maximum number of results to return per page
category comma-separated list of strings (categories) The categories to search within
search string The search query

The /templates/collections endpoint accepts the following query parameters:

Parameter Type Description
category comma-separated list of strings (categories) The categories to search within
search string The search query

Data schema#

You can explore the data structure of the items in the response object returned by endpoints here:

Show workflow item data schema
Workflow item data schema
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{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Generated schema for Root",
  "type": "object",
  "properties": {
    "id": {
      "type": "number"
    },
    "name": {
      "type": "string"
    },
    "totalViews": {
      "type": "number"
    },
    "price": {},
    "purchaseUrl": {},
    "recentViews": {
      "type": "number"
    },
    "createdAt": {
      "type": "string"
    },
    "user": {
      "type": "object",
      "properties": {
        "username": {
          "type": "string"
        },
        "verified": {
          "type": "boolean"
        }
      },
      "required": [
        "username",
        "verified"
      ]
    },
    "nodes": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "id": {
            "type": "number"
          },
          "icon": {
            "type": "string"
          },
          "name": {
            "type": "string"
          },
          "codex": {
            "type": "object",
            "properties": {
              "data": {
                "type": "object",
                "properties": {
                  "details": {
                    "type": "string"
                  },
                  "resources": {
                    "type": "object",
                    "properties": {
                      "generic": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "properties": {
                            "url": {
                              "type": "string"
                            },
                            "icon": {
                              "type": "string"
                            },
                            "label": {
                              "type": "string"
                            }
                          },
                          "required": [
                            "url",
                            "label"
                          ]
                        }
                      },
                      "primaryDocumentation": {
                        "type": "array",
                        "items": {
                          "type": "object",
                          "properties": {
                            "url": {
                              "type": "string"
                            }
                          },
                          "required": [
                            "url"
                          ]
                        }
                      }
                    },
                    "required": [
                      "primaryDocumentation"
                    ]
                  },
                  "categories": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    }
                  },
                  "nodeVersion": {
                    "type": "string"
                  },
                  "codexVersion": {
                    "type": "string"
                  }
                },
                "required": [
                  "categories"
                ]
              }
            }
          },
          "group": {
            "type": "string"
          },
          "defaults": {
            "type": "object",
            "properties": {
              "name": {
                "type": "string"
              },
              "color": {
                "type": "string"
              }
            },
            "required": [
              "name"
            ]
          },
          "iconData": {
            "type": "object",
            "properties": {
              "icon": {
                "type": "string"
              },
              "type": {
                "type": "string"
              },
              "fileBuffer": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ]
          },
          "displayName": {
            "type": "string"
          },
          "typeVersion": {
            "type": "number"
          },
          "nodeCategories": {
            "type": "array",
            "items": {
              "type": "object",
              "properties": {
                "id": {
                  "type": "number"
                },
                "name": {
                  "type": "string"
                }
              },
              "required": [
                "id",
                "name"
              ]
            }
          }
        },
        "required": [
          "id",
          "icon",
          "name",
          "codex",
          "group",
          "defaults",
          "iconData",
          "displayName",
          "typeVersion"
        ]
      }
    }
  },
  "required": [
    "id",
    "name",
    "totalViews",
    "price",
    "purchaseUrl",
    "recentViews",
    "createdAt",
    "user",
    "nodes"
  ]
}
Show category item data schema
Category item data schema
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{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "properties": {
    "id": {
      "type": "number"
    },
    "name": {
      "type": "string"
    }
  },
  "required": [
    "id",
    "name"
  ]
}
Show collection item data schema
Collection item data schema
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{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "properties": {
    "id": {
      "type": "number"
    },
    "rank": {
      "type": "number"
    },
    "name": {
      "type": "string"
    },
    "totalViews": {},
    "createdAt": {
      "type": "string"
    },
    "workflows": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "id": {
            "type": "number"
          }
        },
        "required": [
          "id"
        ]
      }
    },
    "nodes": {
      "type": "array",
      "items": {}
    }
  },
  "required": [
    "id",
    "rank",
    "name",
    "totalViews",
    "createdAt",
    "workflows",
    "nodes"
  ]
}

You can also interactively explore n8n's API endpoints:

https://api.n8n.io/templates/categories
https://api.n8n.io/templates/collections
https://api.n8n.io/templates/search
https://api.n8n.io/health

You can contact us for more support.

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