Get SEC financial statements as JSON
How do I get a company's revenue, net income and total assets from SEC filings as JSON?
Guides
Guides and explainers.
Each guide answers one question about a public dataset, with working examples against the Olympus API and the limits of the source. See methodology for how each dataset is built and release notes for what was published when.
How sales tax rates by address work
How do you find the sales tax rate for a US address, and what are the Streamlined Sales Tax rate and boundary files?
ZCTA vs ZIP code
What is the difference between a ZCTA and a ZIP code?
Find a public company's EIN
How do I find a public company's EIN (Employer Identification Number)?
UK council spending over £500, explained
What spending over £500 do English councils have to publish, and how can I search it?
MCP servers for government data
Which MCP servers give AI agents access to government data, and how do I connect one?