providers
Registered LLM providers.
| Name | Description | Source |
|---|---|---|
anthropic # | Anthropic Messages provider using ANTHROPIC_API_KEY and the default claude-haiku-4-5 model. | extensions/adapters/providers/anthropic/init.fnl:20 |
mock # | Deterministic, scriptable mock provider; requires no credentials. Drive responses with FEN_MOCK_SCRIPT or the mock-script provider option. | extensions/adapters/providers/mock/init.fnl:22 |
openai # | OpenAI Chat Completions provider using OPENAI_API_KEY and the default gpt-5.4-nano model. | extensions/adapters/providers/openai/init.fnl:50 |
openai-codex # | ChatGPT subscription/Codex Responses provider using the openai-codex OAuth auth backend and default gpt-6.1-sol model. | extensions/adapters/providers/openai/init.fnl:70 |
openai-responses # | OpenAI Responses API provider using OPENAI_API_KEY and the default gpt-5.4-nano model. | extensions/adapters/providers/openai/init.fnl:56 |
openrouter # | OpenRouter Chat Completions provider using OPENROUTER_API_KEY and a curated tool-capable model list. | extensions/adapters/providers/openrouter/init.fnl:26 |
sakana # | Sakana AI Responses provider using SAKANA_API_KEY and the default fugu-ultra model. | extensions/adapters/providers/sakana/init.fnl:31 |