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

`type.auth_principal_failure_context`

Failure field holds a caller.

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

example

principal {    user: {        subject: Member.handle    }}type Handle = Text {    max_length: 40}entity Member {    id: Uuid    handle: Handle {        unique: true    }}type MemoLocked = Failure {    kind: FailureKind.conflict    client: {        caller: Principal.user    }}

jadpo checkcheck failed: 1 error, 1 file

error MemoLocked.caller holds a caller

--> main.jadpo:21:17

   |21 |         caller: Principal.user   |                 ^^^^^^^^^^^^^^ a caller

reason: A failure is logged and its client fields reach the client, while a caller value holds who signed in, so a failure carries the caller's id instead.
next: Type caller with the entity's id, such as User.id (agent)
rule: type.auth_principal_failure_context
help: https://jadpo.dev/docs/errors/type.auth_principal_failure_context

Markdown for agents: /docs/errors/type.auth_principal_failure_context.md.Built from Jadpo main at aee2e8f.