ysa

Providers ​

ysa supports multiple AI providers. Claude is the default.

Built-in providers ​

Claude ​

bash
ysa run "add tests"                          # defaults to Claude
ysa run "add tests" --provider claude

Auth: Log in with the claude CLI before running ysa (claude login). The OAuth token is picked up automatically.

Default model: claude-sonnet-4-6

DeepSeek ​

bash
ysa run "add tests" --provider deepseek

Auth: Store your API key with:

bash
ysa key set deepseek

DeepSeek uses Claude Code's API protocol (api.deepseek.com/anthropic) so the same agent binary works without modification.

Default model: deepseek-v4-pro (sub-agent tasks use deepseek-v4-flash)

Mistral ​

bash
ysa run "add tests" --provider mistral

Auth: Store your API key with:

bash
ysa key set mistral

Default model: devstral-small-latest

Managing API keys ​

bash
ysa key set <provider>     # prompt for key and store it securely
ysa key check <provider>   # verify a key is stored
ysa key delete <provider>  # remove a stored key

Switching providers via API ​

ts
await runTask({
  ...
  provider: "deepseek",
});

Custom providers ​

See Providers API reference for how to implement and register a custom ProviderAdapter.

If your provider's API endpoint requires direct TCP access (bypassing the proxy), set bypassHosts on the adapter:

ts
export const myAdapter: ProviderAdapter = {
  ...
  bypassHosts: ["api.myprovider.com"],
};