---
title: "Card Headline Endpoint"
method: POST
path: "/sessions/{session_id}/card-headline"
tags: ["sessions"]
---

# Card Headline Endpoint

`POST /sessions/{session_id}/card-headline`

## Request

- Base URL: `https://api.nicheangle.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api.nicheangle.com/sessions/{session_id}/card-headline`
- Auth: none declared

Compress a hand-typed hook to its ≤60-char card-headline twin. Cheap +
fast (the desk precomputes twins for palette variants; this covers custom
hooks). Returns the short form for the caller to feed into a card re-render.

## Path parameters

- `session_id` string, uuid, required

## Headers

- `authorization` string, nullable

## Request body

- CardHeadlineRequest
  - `hook` string, required

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/nicheangle/apis/signal-api.md) · [All operations](https://skmtc.dev/nicheangle/apis/signal-api/llms.txt) · [OpenAPI document](https://skmtc.dev/nicheangle/apis/signal-api/revisions/ed8b47ff5891?raw)