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.binding_unused

Route reads a placeholder or input it never passes on.

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

Everything a route reads from a request reaches 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 /{memo_id: MemoId} {        input: AddMemo        output: MemoView        run: add_memo(input)    }}
jadpo checkcheck failed: 1 error, 1 file

error POST /memos/{memo_id} reads placeholder memo_id and never passes it on

--> main.jadpo:27:14

   |27 |         run: add_memo(input)   |              ^^^^^^^^ `memo_id` not passed
reason
Everything a route reads from a request reaches what it runs by name; a value read and ignored is a URL or a field that does nothing.
next
Pass memo_id to add_memo, or remove it from the route (agent)
rule
route.binding_unused
help
https://jadpo.dev/docs/errors/route.binding_unused

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