Use the Anthropic SDK with abliteration.ai

How to use abliteration.ai with the Anthropic Messages API — base URL, auth token, and what’s supported.

To use the Anthropic SDK with abliteration.ai, set the base URL to https://api.abliteration.ai and pass your ak_... key as api_key= (sent as x-api-key) — no other code changes. abliteration.ai implements the Anthropic Messages API, including streaming, tool use, web search, and web fetch.

Configuration

Base URL	https://api.abliteration.ai
Auth	Authorization: Bearer ak_... or x-api-key: ak_... — both work
Endpoint	/v1/messages

Python

from anthropic import Anthropic

client = Anthropic(
    base_url="https://api.abliteration.ai",
    api_key=os.environ["ABLIT_KEY"],
)

resp = client.messages.create(
    model="abliterated-model",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello"}],
)

curl

curl https://api.abliteration.ai/v1/messages \
  -H "x-api-key: $ABLIT_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "abliterated-model",
    "max_tokens": 1024,
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Request safety filtering

Pass flagged_categories in the request body to reject calls whose content matches moderation categories you choose (harassment, hate, illicit, sexual). Works on /v1/messages with no policy setup. See request safety filtering.

Thinking

abliterated-model is a reasoning model. Set "thinking": false at the top level of the request body to skip reasoning and return only the final answer. See thinking toggle.