Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 5 Nov 2026. What's built · Install 0.3.0

ReferenceErrors

Errors External services · rule

`connection.package_unknown`

Connection names no provider package the app holds.

Area 11, External services; not declinable; the next step is usually the agent's.

A connection names a provider package the app holds, by its name and version; a library package needs no connection at all:

example

application {    connections: {        couriers: {            package: AcmeCouriers.v2            domains: [shipping]            environment: config.couriers_environment        }    }}

jadpo checkcheck failed: 1 error, 6 files

error couriers connects to AcmeCouriers.v2, which the app doesn't hold

--> app.jadpo:4:22

  |4 |             package: AcmeCouriers.v2  |                      ^^^^^^^^^^^^^^^ no such package

reason: A connection's package: names a provider package by its name and version, installed in packages/ or the app's own in shared/providers/; the app holds AcmeCouriers.v1.
next: Write package: AcmeCouriers.v1 (agent)
rule: connection.package_unknown
help: https://jadpo.dev/docs/errors/connection.package_unknown

Markdown for agents: /docs/errors/connection.package_unknown.md.Built from Jadpo main at aee2e8f.