Prompt templates

The ReAct graph injects the following variables into the agent's system prompt before each run. Reference them with Jinja2 syntax, for example {{ agent_name }}. The set of available variables is graph-dependent, so it is documented here alongside the graph that provides it. See Write templated prompts for usage patterns.

Variable	Type	Description
agent_name	string	The agent's name, taken from the agent block label in the manifest.
skills	list	The skills available to the agent. Each entry carries the skill's name and description.
context_vars	object	The context variables supplied by the client for this run, keyed by name.
current_datetime	string	The current date and time captured at the start of the run.

Variables are injected at runtime before each run, so a template can react to the client-supplied context of the current request. The prompt field itself is declared on the agent block.