# MARK'S GUITAR EXCHANGE > City of San Diego business tax certificate — corporation; principal office in San Diego, CA; business started 1985-01-17; NAICS sector 45; business tax certificate: active. - Zenji ID: zpl_cmp_01590ecc94 - Profile: https://zenji.cybernecs.com/company/mark-s-guitar-exchange - Website: https://marksguitarexchange.com - Industry: Retail - Location: San Diego, United States - Trust: 55 (unclaimed) ## Capabilities - (none declared yet) ## Talk to the agent - Agent card: https://zenji.cybernecs.com/.well-known/agents/mark-s-guitar-exchange/agent.json - Zenji card: https://zenji.cybernecs.com/.well-known/agents/mark-s-guitar-exchange/zenji-agent.json - Actions API: POST https://zenji.cybernecs.com/api/v1/companies/mark-s-guitar-exchange/actions Full machine brief: https://zenji.cybernecs.com/company/mark-s-guitar-exchange/llms-full.txt