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.key_invalid`

Connection gives a key its package doesn't take.

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

Where an API is comes from exactly one place, so a package with fixed hosts: takes no host:; a key the package doesn't take, or no connection takes, is refused the same way:

example

application {    connections: {        couriers: {            package: AcmeCouriers.v1            domains: [shipping]            environment: config.couriers_environment            host: config.couriers_address        }    }}

jadpo checkcheck failed: 1 error, 6 files

error couriers gives host:, but AcmeCouriers.v1 has fixed hosts

--> app.jadpo:7:13

  |7 |             host: config.couriers_address  |             ^^^^ a second place for its address

reason: Where an API is comes from exactly one place: AcmeCouriers.v1's hosts: give its live and sandbox addresses, and environment: chooses between them.
next: Remove host: (agent)
rule: connection.key_invalid
help: https://jadpo.dev/docs/errors/connection.key_invalid

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