VernLLMVernLLM
Adapters

AWS Bedrock

Use the fromBedrock adapter with AWS Bedrock Converse API

Uses Bedrock's Converse API, which provides a unified request/response interface across supported model families (Anthropic, Titan, Llama, Mistral, and others).

JSON handling depends on the requested format:

  • json_object uses prompt-based JSON instructions.
  • json_schema uses Bedrock Converse tool use for native schema enforcement when supported by the selected model.

reasoning_effort is not forwarded because Bedrock does not expose an equivalent option through Converse.

Note: Tool-based structured output requires a Bedrock model that supports tool use. Models without tool support will return a provider error rather than falling back automatically.

Gemini

fromGemini adapter

Custom Providers — fromFetch

Raw HTTP escape hatch for providers with no SDK