Claude Code

Shiba supports Claude Code as a first-class coding agent harness. When selected, the orchestrator delegates the approved task to a Cloudflare Sandbox container running Anthropic’s official claude CLI.

Claude Code is the default agent for tasks originated from Slack mentions and Telegram chats, providing high reasoning capability and fluid multi-turn code refactoring.

Agent Overview

Attribute	Specification
Harness ID	`claude-code`
CLI Binary	`claude`
Pinned Version	`2.1.277` (in Dockerfile)
Default Model	`anthropic/claude-sonnet-4-6`
Supported Models	`anthropic/claude-sonnet-4-6`, `anthropic/claude-3-7-sonnet-20250219`, `anthropic/claude-3-5-haiku-20241022`
Credential Model	AI Gateway BYOK (dummy key inside sandbox; real key injected at egress)
Invocation	`claude -p "<task>" --print --output-format stream-json --dangerously-skip-permissions`

How It Works

Developer Request
  └── CodingOrchestrator generates delegate_coding_task({ harness: "claude-code" })
      └── Human signs off on exact prompt & repository
          └── Ephemeral Cloudflare Sandbox boots
              ├── Clones repository via scoped git token
              ├── Executes: claude -p "<task>" --output-format stream-json
              ├── Streams newline-delimited JSON events back to Dashboard/Slack
              └── Produces unified diff & optional pull request

Configuration & Deployment

You can configure Claude Code globally across your deployment or select it on a per-task basis.

1. Configure the Provider Key in AI Gateway

Store your Anthropic API key in your Cloudflare AI Gateway under the provider ID anthropic. The Sandbox runtime provides a dummy key to the container environment, while Worker egress replaces it with the authentic key on calls to api.anthropic.com.

2. Deployment Defaults

Set your preferred harness and model defaults in apps/backend/wrangler.jsonc or via environment variables:

# Use Claude Code as the deployment-wide default harness
pnpm wrangler secret put AGENT_HARNESS # enter "claude-code"

# Set the default Anthropic model
pnpm wrangler secret put CLAUDE_CODE_MODEL # enter "anthropic/claude-sonnet-4-6"

3. Channel-Specific Overrides

Slack and Telegram can independently pin their agent harness:

SLACK_AGENT_HARNESS=claude-code
TELEGRAM_AGENT_HARNESS=claude-code

Selecting Claude Code in a Task

When delegating from the API, dashboard, or chat triggers, specify harness: "claude-code":

{
  "repoUrl": "https://github.com/acme/backend",
  "task": "Migrate database connection pool to PgBouncer syntax",
  "baseBranch": "main",
  "harness": "claude-code",
  "codingModel": "anthropic/claude-sonnet-4-6"
}

Event Streaming & Progress

Claude Code emits newline-delimited JSON envelopes via --output-format stream-json. The Shiba runtime parses each event in real time:

Tool invocations (file reads, bash commands, edits) are extracted and displayed in the run transcript.
Any envelope carrying is_error: true is treated as an immediate failure and surfaced honestly with the provider’s exact error message.
Clean completion triggers git status collection, index-to-add staging, and diff computation.