Dear Stoerr,
I fllow your steps , but in adding action, test it can not work.
my yaml file

http://localhost:7364/codeveloperengine.yaml

openapi: 3.0.1
info:
title: Co-Developer GPT Engine
version: THEVERSION
**servers:

• url: https://maxenergyluo.loca.lt/**
  paths:
  /executeAction:
  post:
  operationId: executeAction
  x-openai-isConsequential: false
  summary: Execute an action with given content as standard input. Only on explicit user request.
  parameters:
  - name: actionName
  in: query
  required: true
  schema:
  type: string
  requestBody:
  required: true
  content:
  application/json:
  schema:
  type: object
  properties:
  actionInput:
  type: string
  responses:
  '200':
  description: Action executed successfully, output returned
  content:
  text/plain:
  schema:
  type: string
  /fetchUrlTextContent:
  get:
  operationId: fetchUrlTextContent
  x-openai-isConsequential: false
  summary: Fetch text content from a given URL.
  parameters:
  - name: url
  in: query
  required: true
  schema:
  type: string
  - name: raw
  description: return raw html or pdf content without converting to markdown
  in: query
  required: false
  schema:
  type: boolean
  responses:
  '200':
  description: fetch successful; content returned
  content:
  text/plain:
  schema:
  type: string
  /grepFiles:
  get:
  operationId: grepAction
  x-openai-isConsequential: false
  summary: Search for lines in text files matching the given regex.
  parameters:
  - name: path
  in: query
  description: relative path to the directory to search in or the file to search. root directory = '.'
  required: true
  schema:
  type: string
  - name: fileRegex
  in: query
  description: optional regex to filter file names
  required: false
  schema:
  type: string
  - name: grepRegex
  in: query
  description: regex to filter lines in the files
  required: true
  schema:
  type: string
  - name: contextLines
  in: query
  description: number of context lines to include with each match (not yet used)
  required: false
  schema:
  type: integer
  responses:
  '200':
  description: Lines matching the regex
  content:
  text/plain:
  schema:
  type: string
  /listFiles:
  get:
  operationId: listFiles
  x-openai-isConsequential: false
  summary: Recursively lists files in a directory. Optionally filters by filename and content.
  parameters:
  - name: path
  in: query
  description: relative path to directory to list. root directory = '.'
  required: true
  schema:
  type: string
  - name: filePathRegex
  in: query
  description: regex to filter file paths - use for search by file name
  required: false
  schema:
  type: string
  - name: grepRegex
  in: query
  description: an optional regex that lists only files that contain a line matching this pattern
  required: false
  schema:
  type: string
  - name: listDirectories
  in: query
  description: if true, lists directories instead of files
  required: false
  schema:
  type: boolean
  responses:
  '200':
  description: List of relative paths of the files
  content:
  text/plain:
  schema:
  type: string
  /readFile:
  get:
  operationId: readFile
  x-openai-isConsequential: false
  summary: Read a files content.
  parameters:
  - name: path
  in: query
  description: relative path to file
  required: true
  schema:
  type: string
  - name: maxLines
  in: query
  description: maximum number of lines to read from the file
  required: false
  schema:
  type: integer
  - name: startLine
  in: query
  description: line number to start reading from
  required: false
  schema:
  type: integer
  responses:
  '200':
  description: Content of the file
  content:
  text/plain:
  schema:
  type: string
  /replaceInFile:
  post:
  operationId: replaceInFile
  x-openai-isConsequential: false
  summary: Replaces the single occurrence of one or more literal strings in a file. The whole file content is matched, not line by line.
  parameters:
  - name: path
  in: query
  description: relative path to file
  required: true
  schema:
  type: string
  requestBody:
  required: true
  content:
  application/json:
  schema:
  type: object
  properties:
  replacements:
  type: array
  items:
  type: object
  properties:
  search:
  type: string
  description: The literal string to be replaced - can contain many lines, but please take care to find a small number of lines to replace. Everything that is replaced must be here. Prefer to match the whole line / several whole lines.
  replace:
  type: string
  description: Literal replacement, can contain several lines. Please observe the correct indentation.
  responses:
  '200':
  description: File updated successfully
  /writeFile:
  post:
  operationId: writeFile
  x-openai-isConsequential: false
  summary: Overwrite a small file with the complete content given in one step. You cannot append to a file or write parts or write parts - use replaceInFile for inserting parts.
  parameters:
  - name: path
  in: query
  description: relative path to file
  required: true
  schema:
  type: string
  requestBody:
  required: true
  content:
  application/json:
  schema:
  type: object
  properties:
  content:
  type: string
  responses:
  '200':
  description: File overwritten

Since OpenAI doesn't seem to want ChatGPT plugins anymore but GPTs, I'll focus on GPTs but leave in the plugin functionality, though put it into the background. It works as a co-developer for a GPT, but it isn't a GPT in itself - it provides the actions for the GPT, so I'll name it Co-Developer GPT Engine.