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Developer data workflow

Public API Lab

Inspect public data requests and copy reproducible analysis code. Responses preserve source references, units, coverage, and missing-data states.

Public endpoints
628 evidence domains
Validated recipes
124live and editable requests
Current rows
235,8101483 declared fields
API keys
0open GET access
Endpoint topologyGET /api/public/:dataset
Public API endpoint topologySeven evidence domains containing 62 endpoint families connect to one public request engine. Node size follows endpoint-family count.API LAB124 recipes7Observatory system10Economy and prices6Markets4Organizations12Policy and mergers4Geographies7Industries12Research and sources
node size follows endpoint familiesReviewed through Aug 15, 2026
No API keyOpen same-origin GET requests across every endpoint family.
JSON + CSVOne filtered row contract in two portable response formats.
Five-minute cacheShared responses retain a 24-hour stale revalidation window.
Audit source review

Public API live workbench

Live request console

Interrogate the public evidence layer.

Select a contract, tune its parameters, and run the exact same-origin request used by the observatory.
Endpoints
62
Recipes
124
Authentication
None

Endpoint register

62 / 62

Observatory system

Competition monitor signals

Latest-to-prior observed comparisons across definition-stable market series, strict Census sector medians, banking and fixed-broadband geographic screens, Census business dynamics, and federal HSR activity, with separate periods, units, evidence counts, sources, and non-composite guardrails.
Research promptWhich industry-level concentration signals increased between their observed anchors?Strict Census sector medians that increased.
Response format
GET/api/public/signals?domain=industries&direction=increased
Ready to run this request.The response envelope, headers, timing, byte count, and bounded preview will appear here.

Interpretation boundary

A public endpoint is an evidence route, not a conclusion.

This catalog describes the observatory's current public endpoint inventory. Row counts are current encoded rows, not historical additions; fields describe the published response contract, not a guarantee that every value is non-null. Source-review dates and measurement periods remain documented in the release and availability desks.
Public API Lab | Antitrust Radar