---
title: "Create Letter"
method: POST
path: "/letter-v2/letters"
tags: ["letter-v2"]
---

# Create Letter

`POST /letter-v2/letters`

## Request

- Base URL: `https://api.overfit.de` (the document declares no server; this is the origin it was published from)
- URL: `https://api.overfit.de/letter-v2/letters`
- Auth: one of:
  - OpenID Connect (`https://auth.okns.de/realms/overfit-products/.well-known/openid-configuration`)
  - API key in header `X-API-Key`

Generate a letter for a dataset company. Returns immediately with
status=queued; poll GET /letter-v2/letters/{id} until done|failed.

## Request body

- LetterCreate
  - `company_id` string, required
  - `template_id` string, required
  - `mode` string

## Response `200`

Successful Response

- LetterSchema
  - `id` string, required
  - `template_id` string, required
  - `batch_id` string, nullable
  - `company_id` string, required
  - `company_name` string, nullable
  - `status` string, required
  - `error` string, nullable
  - `data_completeness` object, nullable
  - `fit` object, nullable
  - `recipient` object, nullable
  - `letter_subject` string, nullable
  - `letter_text` string, nullable
  - `qa_grade` string, nullable
  - `qa_score` integer, nullable
  - `qa_issues` unknown[], nullable
    - unknown
  - `verified_status` string, nullable
  - `verification` object, nullable
  - `send_ready` boolean
  - `sent_at` string, date-time, nullable
  - `share_token` string, nullable
  - `created_at` string, date-time, required
  - `updated_at` string, date-time, required

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/overfit/apis/overfit-insights-revolutionizing-data-retrieval.md) · [All operations](https://skmtc.dev/overfit/apis/overfit-insights-revolutionizing-data-retrieval/llms.txt) · [OpenAPI document](https://skmtc.dev/overfit/apis/overfit-insights-revolutionizing-data-retrieval/revisions/0055f7fe41e5?raw)