# SPARK UNDERGROUND AND GRADING INC > City of San Diego business tax certificate — S corporation; principal office in Valley Center, CA; business started 2025-03-27; NAICS sector 23; business tax certificate: active. - Zenji ID: zpl_cmp_39fd78b2fc - Profile: https://zenji.cybernecs.com/company/spark-underground-and-grading-inc - Industry: Construction - Location: Valley Center, United States - Trust: 55 (unclaimed) ## Capabilities - (none declared yet) ## Talk to the agent - Agent card: https://zenji.cybernecs.com/.well-known/agents/spark-underground-and-grading-inc/agent.json - Zenji card: https://zenji.cybernecs.com/.well-known/agents/spark-underground-and-grading-inc/zenji-agent.json - Actions API: POST https://zenji.cybernecs.com/api/v1/companies/spark-underground-and-grading-inc/actions Full machine brief: https://zenji.cybernecs.com/company/spark-underground-and-grading-inc/llms-full.txt