Skill: TraceMem Reading Data (Data Products)

Purpose

This skill teaches how to safely and correctly read data using TraceMem Data Products. Direct database selection or API calls are prohibited; all data access must be mediated by TraceMem.

When to Use

• When you need to retrieve information (database rows, API results, resource state).
• When you need to search or query for specific records.

When NOT to Use

• Do not use for writing data (use decision_write / insert product).
• Do not try to use standard SQL libraries or HTTP clients for governed data.

Core Rules

• Decision Envelope REQUIRED: You MUST have an active decision_id from decision_create before calling decision_read. Reading data without a decision envelope will FAIL.
• Data Products Only: You must access data via a named "Data Product".
• Operation Specificity: A Data Product usually supports only ONE operation. Use a "read" product (e.g., customers_read) for reading.
• Purpose is Mandatory: You must declare a purpose string for every read. This purpose must be in the product's allowed_purposes list.
• Least Privilege: Only request the data you strictly need.