$ adk create --type=config --model gemini-3.8-flash --api_key your-gemini-api-key docs_config
created docs_config/: .env, .gitignore, root_agent.yaml
# yaml-language-server: $schema=https://raw.githubusercontent.com/google/adk-python/refs/heads/main/src/google/adk/agents/config_schemas/AgentConfig.json
name: root_agent
description: A helpful assistant for user questions.
instruction: Answer user questions to the best of your knowledge
model: gemini-3.8-flash

$ adk run --in_memory docs_config 'How do I roll back production?'
[docs_assistant]: To roll back production to a specific release, run:
`shipctl rollback --env production --to r41`
Without `--to`, shipctl rolls back to the previous release. It points traffic at the release you specify without rebuilding anything. 
Note that database migrations are not rolled back automatically; if the current release ran a migration, you must write a new migration that reverses it.

$ python load.py 'How do I roll back production?'
LlmAgent docs_assistant model=gemini-3.8-flash tools=['read_page']
temperature=0.2 thinking_level=LOW
docs_assistant  call read_page({'page': 'rollback'})
docs_assistant  result read_page
docs_assistant  'To roll back production, use `shipctl ro'
answer: To roll back production, use `shipctl rollback`:

- To roll back to a specific release:
  `shipctl rollback --env production --to r41`
- Without `--to`, shipctl rolls back to the previous release.

It points traffic at the specified release without rebuilding. Note that database migrations are not rolled back; if the release ran a migration, you must write a new migration to reverse it.

from_config misspelled_field: ValidationError: 2 validation errors for LlmAgentConfig
from_config missing_tool: AttributeError: module 'docs_config.tools' has no attribute 'read_pages'
from_config stdlib_tool: ValueError: Blocked module reference: 'os.system'. Agent configurations cannot import from 'os'. The Python standard library is blocked in full because too much of it can execute arbitrary code. Reference your own agent package, 'google.adk', or a third-party package instead.

$ adk web --port 8766 .
$ curl -s http://127.0.0.1:8766/dev/apps/docs_config/builder
HTTP 200
$ curl -s -X POST http://127.0.0.1:8766/dev/apps/docs_config/builder/save -F 'files=@edit.yaml;filename=docs_config/root_agent.yaml'
true
HTTP 200
$ curl -s -X POST http://127.0.0.1:8766/dev/apps/docs_config/builder/save -F 'files=@args_key.yaml;filename=docs_config/root_agent.yaml'
{"detail":"Blocked key 'args' found in 'docs_config/root_agent.yaml'. The 'args' field is not allowed in builder uploads because it can execute arbitrary code."}
HTTP 400
$ curl -s -X POST http://127.0.0.1:8766/dev/apps/docs_config/builder/save -F 'files=@outside_code.yaml;filename=docs_config/root_agent.yaml'
{"detail":"Blocked code reference 'subprocess.run' in 'docs_config/root_agent.yaml'. The 'tools' field may only reference code under 'docs_config' or an ADK built-in."}
HTTP 400