Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 30 Oct 2026. What's built · Install 0.1.0
jadpo
Reference: Project layout and modules

Project layout and modules · rule

semantic.unknown_callee

Called name is not declared.

Area 1, Project layout and modules; not declinable; the next step is usually the agent's.

example
type Count = Int {    min: 0}function f(x: Count) -> Count {    return lookup(x)}
text
error: `lookup` isn't a function, action or query --> main.jadpo:6:12  |6 |     return lookup(x)  |            ^^^^^^ not declared  reason: Nothing in this project called `lookup` can be called.  next: Declare `lookup`, or call an existing function (agent)  rule: semantic.unknown_callee  help: https://jadpo.dev/docs/errors/semantic.unknown_calleecheck failed: 1 error, 1 file

Markdown for agents: /docs/errors/semantic.unknown_callee.md.Built from Jadpo main at a707efb.