Add prompt's variable support for get Prompt action

[nivpenso]

Hey,

Can you please add support within this node to "compile" a prompt with variables?

Best,

[marcklingen]

thanks for sharing this idea, open for contributions on this!

[marcjaner]

this would be very useful

[nivpenso]

thanks for sharing this idea, open for contributions on this!

Before I start working on it, I wanted to check — I noticed that some recent PRs haven’t been merged. Would you be able to confirm that contributions on this topic will be reviewed?

[dataoracle]

bumping this - it's a required functionality and the PR looks great. Hopefully will be merged soon 🙏

Because without this... how can we deal with variable substitution? Many prompts we use in n8n have already {{ }} syntax to pass some retrieved information, or some simple dynamic parameters like {{$now}}.

These prompts are not working properly when retrieved from Langfuse and passed to the AI Agent in n8n because they don't substitute properly the expressions.

[blim8183]

Just ran into this blocker too!