DeepSeek Harness powered by Tavily

Key features

• Keyless mode - no API key needed at all: the provider sends the official X-Tavily-Access-Mode: keyless header when no key is configured.
• Responses are identical to keyed ones.
• Keyed upgrade - set TAVILY_API_KEY in /.dsh/.credentials.yaml or the environment to use the keyed tier (1,000 free credits/month at app.tavily.com).
• The key is resolved fresh for every search.
• Official defaults - search_depthbasic (1 credit), include_answer: false, max_results: 5, chunks_per_source: 3, per Tavily's agent guidance.