Claude Code (local)

Run Anthropic's Claude Code agent on your machine — no API key, using your Claude login.

The claude-code provider runs Anthropic's Claude Code agent locally instead of calling a plain model. Scira's research loop, tools, and instructions run inside the Claude Code harness on your real files, authenticated by your existing claude login session — no API key, and your Pro/Max subscription is used as-is.

Set up

Install Claude Code

npm install -g @anthropic-ai/claude-code

See Claude Code setup for other install options.

Log in

claude        # then run /login inside the CLI

Authentication uses your Claude account session (stored under ~/.claude). Scira reads only the logged-in account, never an API key.

Select it in Scira

From the TUI, run /llm → Claude Code (local). Or set it in config:

~/.scira/config.json

{ "llmProvider": "claude-code", "model": "claude-sonnet-4-6" }

Available models

Model ID	Description
`claude-sonnet-4-6`	Default. Balanced speed and capability for research + code
`claude-opus-4-8`	Most capable, for harder reasoning
`claude-haiku-4-5`	Fastest and lowest cost

Pick one with /model.

Thinking

Claude Code's extended thinking is controlled with /thinking, mapped to harness.thinking in config:

Mode	Effect
`adaptive`	Default. Think more on harder turns
`on`	Always think
`off`	Never think

You can also cap internal turns per prompt with harness.maxTurns (unset uses the CLI default).

~/.scira/config.json

{
  "llmProvider": "claude-code",
  "harness": { "thinking": "adaptive", "maxTurns": 40 }
}

Notes

Web search runs through Scira's own Exa/Firecrawl/Parallel pipeline, not Claude Code's built-in search, so answers cite your configured sources.
Runs use your local filesystem and process access in the current project directory — there's no cloud sandbox.
scira doctor reports whether claude is on your PATH and which account is logged in.

No API key

Scira strips credential environment variables before launching the harness, so ANTHROPIC_API_KEY is ignored for this provider — your subscription login is used instead.