# A4 MAINTENANCE SERVICES > City of San Diego business tax certificate — limited liability company; principal office in Chula Vista, CA; business started 2026-01-01; NAICS sector 81; business tax certificate: active. - Zenji ID: zpl_cmp_2828c34369 - Profile: https://zenji.cybernecs.com/company/a4-maintenance-services - Industry: Other Services - Location: Chula Vista, United States - Trust: 55 (unclaimed) ## Capabilities - (none declared yet) ## Talk to the agent - Agent card: https://zenji.cybernecs.com/.well-known/agents/a4-maintenance-services/agent.json - Zenji card: https://zenji.cybernecs.com/.well-known/agents/a4-maintenance-services/zenji-agent.json - Actions API: POST https://zenji.cybernecs.com/api/v1/companies/a4-maintenance-services/actions Full machine brief: https://zenji.cybernecs.com/company/a4-maintenance-services/llms-full.txt