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
jadpo
ReferenceErrors

ErrorsHTTP · rule

route.argument_invalid

Route passes something other than a placeholder, the input or their fields.

Area 7, HTTP; not declinable; the next step is usually the agent's.

A route passes its placeholders, input and their fields; anything worked out goes in what it runs:

example
type Memo = Text {    max_length: 200}type MemoId = Uuid {}type AddMemo = Input {    text: Memo}type MemoView = Output {    text: Memo}action add_memo(input: AddMemo) -> MemoView {    return MemoView {        text: input.text    }}routes Memos {    prefix: /memos    POST / {        output: MemoView        run: add_memo(            AddMemo {                text: "Hello"            }        )    }}
jadpo checkcheck failed: 1 error, 1 file

error A route passes its placeholders and input, not a value built in the route

--> main.jadpo:27:13

   |27 |             AddMemo {   |             ^^^^^^^^^ a value built in the route
reason
A route is a thin door: what it runs gets the route's placeholders, its input and their fields as written, and works out anything else itself.
next
Pass a placeholder, input or a field of them, and move the rest into what the route runs (agent)
rule
route.argument_invalid
help
https://jadpo.dev/docs/errors/route.argument_invalid

Markdown for agents: /docs/errors/route.argument_invalid.md.Built from Jadpo main at aee2e8f.