Create The API Data Lineage Breakpoint Finder, an interactive application that traces how a field changes as data moves between APIs, services, transformations, and database tables.
Let users import or define service nodes, endpoint schemas, field mappings, transformation rules, and destination fields.
The tool should:
Build a directed data-flow graph.
Trace individual fields from their source to their final destination.
Detect missing mappings, type mismatches, renamed fields, and transformations that discard information.
Highlight where optional fields become mandatory or nullable values become invalid.
Compare two versions of a field-mapping specification.
Simulate sample payloads passing through the pipeline.
Show the exact stage where a payload violates an expected contract.
Generate a field-level lineage report and suggested test cases.
Export the graph and mappings in machine-readable formats.
Include sample integrations for customer records, orders, and payment events. Use explicit mapping rules rather than inferring undocumented transformations. Clearly distinguish verified breaks from possible risks, and build a working visual explorer with search, filtering, and payload simulation.
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