GET

/v1/schemas/replicate/chat/models/anthropic/claude-fable-5.2/predictions

Accept:

kind inputactivity chathash 9c9adf0a…extracted Nov 10, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. upstream-spec Source trace `efc2c04869e9737547108f8a6cf5e4ba511f5403425769883ffe32a3aeae9499` { "fetchedAt": 1794288651, "extractorVersion": "2", "verifiedAt": null }

Request body

4 properties · 1 required · 2 $defs

property	type	description
input*	Input
stream	boolean	This field is deprecated.
webhook	string	An HTTPS URL for receiving a webhook when the prediction has new output. The webhook will be a POST request where the request body is the same as the response body of the [get prediction](#predictions.get) operation. If there are network problems, we will retr…
webhook_events_filter	enum[]	By default, we will send requests to your webhook URL whenever there are new outputs or the prediction has finished. You can change which events trigger webhook requests by specifying `webhook_events_filter` in the prediction request:

Types

2 $defs

effortenum

An enumeration.

low | medium | high | xhigh | max

Inputobject

image	string	Optional input image. Images are priced as (width px * height px)/750 input tokens	format: uri · default: null
effort	enum	An enumeration.	low \| medium \| high \| xhigh \| max
prompt*	string	Input prompt
max_tokens	integer	Maximum number of output tokens, including thinking tokens. Fable 5.2 always thinks before responding, so leave headroom at higher effort levels (Anthropic recommends starting at 64000 for 'xhigh' and 'max').	1024 ≤ n ≤ 128000 · default: 32000
system_prompt	string	System prompt	default: ""
max_image_resolution	number	Maximum image resolution in megapixels. Scales down image before sending it to Claude, to save time and money.	0.001 ≤ n ≤ 2 · default: 0.5

Validate a payload

before you spend tokens

shell

$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"replicate","endpointId":"models/anthropic/claude-fable-5.2/predictions","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}