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 Sign-in and identity · rule

`semantic.multiple_principals`

Project declares more than one principal.

Area 8, Sign-in and identity; not declinable; the next step is usually the agent's.

example

principal {    user: {        subject: Member.handle    }}principal {    user: {        subject: Member.handle    }}type Handle = Text {    max_length: 40}entity Member {    id: Uuid    handle: Handle {        unique: true    }}

jadpo checkcheck failed: 1 error, 1 file

error principal { } is declared twice

--> main.jadpo:7:1

  |1 | principal {  | --------- first declared here7 | principal {  | ^^^^^^^^^ declared again

reason: The caller is declared once, in app.jadpo: one user: and at most one service:, so every route reads the same caller.
next: Move what this principal holds into the first, and remove it (agent)
rule: semantic.multiple_principals
help: https://jadpo.dev/docs/errors/semantic.multiple_principals

Markdown for agents: /docs/errors/semantic.multiple_principals.md.Built from Jadpo main at aee2e8f.