shannon/docs/ai-providers.md

AI Providers

Shannon Lite works best with Claude models. Anthropic API keys are recommended for most users, and Shannon Lite also supports AWS Bedrock and custom Anthropic-compatible endpoints.

Anthropic

Run the setup wizard:

npx @keygraph/shannon setup

Or export an API key directly:

export ANTHROPIC_API_KEY=your-api-key

Source-build mode can use a .env file:

ANTHROPIC_API_KEY=your-api-key

Each tier can be pointed at any Claude model via ANTHROPIC_SMALL_MODEL / ANTHROPIC_MEDIUM_MODEL / ANTHROPIC_LARGE_MODEL (or the setup wizard). If you set a tier to claude-fable-5, note that Fable's safety classifiers route cybersecurity tasks to Opus 4.8, so those phases run on Opus 4.8 regardless.

AWS Bedrock

Run npx @keygraph/shannon setup and select AWS Bedrock. The wizard prompts for region, bearer token, and model IDs.

Or export environment variables directly:

export CLAUDE_CODE_USE_BEDROCK=1
export AWS_REGION=us-east-1
export AWS_BEARER_TOKEN_BEDROCK=your-bearer-token
export ANTHROPIC_SMALL_MODEL=us.anthropic.claude-haiku-4-5-20251001-v1:0
export ANTHROPIC_MEDIUM_MODEL=us.anthropic.claude-sonnet-4-6
export ANTHROPIC_LARGE_MODEL=us.anthropic.claude-opus-4-8

Source-build .env equivalent:

CLAUDE_CODE_USE_BEDROCK=1
AWS_REGION=us-east-1
AWS_BEARER_TOKEN_BEDROCK=your-bearer-token
ANTHROPIC_SMALL_MODEL=us.anthropic.claude-haiku-4-5-20251001-v1:0
ANTHROPIC_MEDIUM_MODEL=us.anthropic.claude-sonnet-4-6
ANTHROPIC_LARGE_MODEL=us.anthropic.claude-opus-4-8

Shannon Lite uses three model tiers:

• small for summarization
• medium for security analysis
• large for deep reasoning

Set ANTHROPIC_SMALL_MODEL, ANTHROPIC_MEDIUM_MODEL, and ANTHROPIC_LARGE_MODEL to Bedrock model IDs available in your region.

Custom Base URL

Shannon Lite supports pointing the SDK at an Anthropic-compatible endpoint with ANTHROPIC_BASE_URL. For proxy-based routing, use an LLM proxy such as LiteLLM configured to expose an Anthropic-compatible endpoint.

Important

Only Claude models are officially supported. Shannon Lite's evaluations, internal testing, and agent harness are optimized for Claude. Smaller or alternative models, including non-Claude models routed through a proxy, may not reliably follow Shannon Lite's instructions or tool-use constraints. Use them at your own risk.

The experimental claude-code-router integration is being removed. If you rely on it, migrate to an Anthropic-compatible proxy such as LiteLLM before upgrading.

Run npx @keygraph/shannon setup and select Custom Base URL, or export variables directly:

export ANTHROPIC_BASE_URL=https://your-proxy.example.com
export ANTHROPIC_AUTH_TOKEN=your-auth-token
export ANTHROPIC_SMALL_MODEL=claude-haiku-4-5-20251001
export ANTHROPIC_MEDIUM_MODEL=claude-sonnet-4-6
export ANTHROPIC_LARGE_MODEL=claude-opus-4-8

Source-build .env equivalent:

ANTHROPIC_BASE_URL=https://your-proxy.example.com
ANTHROPIC_AUTH_TOKEN=your-auth-token
ANTHROPIC_SMALL_MODEL=claude-haiku-4-5-20251001
ANTHROPIC_MEDIUM_MODEL=claude-sonnet-4-6
ANTHROPIC_LARGE_MODEL=claude-opus-4-8