---
title: "Verifying the specialized services"
manual: "TYPO3 LLM Extension"
version: "0.35"
permalink: "https://docs.typo3.org/permalink/netresearch/nr-llm:administration-specialized-services@0.35"
source: "Administration/SpecializedServices.rst"
modified: "2026-09-16T22:09:16+00:00"
---

# Verifying the specialized services

Translation, image generation and speech are not configured as records. Each
one reads a nr-vault identifier from the Extension Configuration, and until a
consuming extension calls it, nothing tells you whether that identifier
resolves to a working credential.

The test page — **LLM > Overview > Test** — answers that directly for
translation and image generation.

## Which setting belongs to which service

| Setting | Used by |
| --- | --- |
| `translators.deepl.apiKeyIdentifier` | DeepL translation |
| `image.fal.apiKeyIdentifier` | FAL image generation |
| `providers.openai.apiKeyIdentifier` | DALL·E images, Whisper transcription and text-to-speech — all three share this one identifier and cannot be configured separately |

## Translation

Enter a text and a target language. Leaving the source language empty makes the
service detect it.

The translator picker lists every registered translator and marks the ones
without a usable credential. Leaving it on **LLM (default)** runs the
LLM path, which needs a working provider but no specialized key — useful to
confirm the page itself works before pointing at DeepL.

Selecting a translator routes to that one, which is the case worth running
after entering its vault identifier. The result names the translator that
answered, the detected source language, and either the characters billed
(specialized translators) or the tokens used (the LLM path).

## Image generation

Enter a prompt and pick **OpenAI (DALL·E)** or **FAL**. Each
service applies its own default model and size; the result reports which were
used, and DALL·E additionally reports the prompt it rewrote yours into.

> [!NOTE]
> The generated image is **not stored**. It is rendered from what the
> provider returned — a URL for FAL, an inline data URI for OpenAI — and is
> gone when you reload. Putting an image into the file storage, attaching it
> to a record or reusing it is the job of the extension that consumes
> nr_llm; this page only proves the credential works.

## Reading the result

A missing or unresolvable credential is reported as such, naming the Extension
Configuration — that is the failure this page exists to surface. Any other
failure of an otherwise-configured service is reported generically, with the
detail in the system log, so that provider responses never reach the browser.

Both endpoints are admin-only and spend real provider quota on every run.

## Speech

Transcription and text-to-speech have no test surface. Transcription needs an
audio upload and synthesis returns binary audio, which raises the same storage
question the image test declines to answer, with less to gain from answering
it. Their credential is the shared OpenAI identifier above, so a successful
DALL·E test also confirms the key those two use.