Government Data

81 US government APIs/SDKs aggregated — 54 keyless. Same ingest + provenance + Clarity engine as the rest of SoapBox, pointed at official sources: spending, legislation, regulations, science, safety. One place, faster, sourced.

Open Data & Discovery

Data.gov CKAN catalog (keyless) — 300k+ federal/state/local dataset records + their distribution/API endpoints (CKAN action API). · A faster, searchable index of every public dataset, with dead-link pruning.
api.data.gov gateway (keyless) — Shared API key + proxy for dozens of federal APIs (FEC, SAM, Regulations.gov, NREL, FEMA…). · One-key explainer: get a single free key, reach every agency behind the gateway.
GSA Open Tech API index (free api.data.gov key) — Directory of GSA-run APIs (SAM, USAspending, Site Scanning, per-diem, Assistance Listings). · A clean catalog of what GSA actually exposes, by use-case.
Federal Site Scanning API (free api.data.gov key) — Automated scans of every federal .gov website (tech stack, accessibility, https, performance). · A "state of the federal web" dashboard ranking agency sites by health.

Law & Regulation

Federal Register API (keyless) — Daily rules, proposed rules, notices, presidential documents — fully keyless JSON, searchable. · A readable, searchable Federal Register with topic alerts and plain-English summaries.
GovInfo API (free api.data.gov key) — Authenticated full text of bills, laws, the US Code, CFR, Congressional Record, court opinions. · A fast full-text search over all federal legal documents (better than the GPO site).
Regulations.gov API (free api.data.gov key) — Federal dockets, documents, and public comments; supports comment submission. · A rulemaking tracker that surfaces open comment periods you can still weigh in on.
Congress.gov API (free api.data.gov key) — Bills, amendments, members, votes, committees, the Congressional Record (free LoC key). · A bill-tracker that follows legislation from intro to law with status alerts.
GovTrack data (keyless) — Open legislative data — votes, bills, members, with computed analyses (keyless legacy API). · Voting-record scorecards for every member of Congress.
CourtListener / RECAP API (keyless) — Federal/state case law, dockets, oral-argument audio, judges (Free Law Project, keyless reads). · A free legal-research search that out-reads paywalled databases.

Spending & Procurement

USAspending API (keyless) — All federal award spending — contracts/grants/loans by agency, recipient, geography, NAICS. · "Where your tax dollars go": searchable spending by agency, vendor, and ZIP.
SAM.gov Entity Management API (free api.data.gov key) — Authoritative registry of entities doing business with the government (keyed to UEI). · A vendor look-up that shows who is registered to win federal contracts.
SAM.gov Get Opportunities (Public) (free api.data.gov key) — Public federal contract-opportunity (RFP/RFI) feed. · A contract-opportunity radar with saved searches and email alerts.
GSA Per Diem API (free api.data.gov key) — Federal lodging/meals per-diem rates by city/county/year. · A travel-budget calculator using official per-diem rates.
USAspending Subawards / Recipients (keyless) — Recipient profiles, sub-award drill-down, and award-summary breakdowns. · A grant-recipient profile page that follows money down to sub-awards.

Economy & Finance

FRED API (free key) — 800k+ economic time series — GDP, CPI, unemployment, rates, money supply (free FRED key). · A clean economic-indicator dashboard that loads faster than FRED.
BLS Public Data API (keyless) — CPI, PPI, employment, wages, productivity (keyless tier; free key lifts daily quota). · An inflation tracker with real CPI series by category and region.
BEA API (free key) — GDP, personal income, trade, GDP-by-state/industry, regional accounts (free BEA key). · A GDP-by-state map showing which states actually drive the economy.
Treasury Fiscal Data API (keyless) — National debt, daily Treasury statement, interest rates, exchange rates — fully keyless JSON. · A live national-debt clock with the daily cash statement behind it.
TreasuryDirect APIs (keyless) — Auction results, securities, average interest rates, debt-to-the-penny (keyless web service). · A Treasury-auction calendar + yield explainer for individual buyers.
FDIC BankFind API (keyless) — Every US bank — financials, branches, failures, call-report data (keyless JSON). · A "is my bank healthy?" lookup using official call-report data.

Markets & Corporate

SEC EDGAR submissions/facts API (keyless) — Company filings, XBRL financial facts, full-text filing index (keyless; requires UA header). · A company-financials viewer that reads 10-Ks so you don't have to.
SEC EDGAR full-text search (keyless) — Full-text search across all EDGAR filings since 2001 (keyless JSON). · Search every public-company filing by phrase, faster than EDGAR.
CFTC Public Reporting (Socrata) (keyless) — Commitments of Traders, swaps data, market reports via Socrata SODA (keyless reads). · A Commitments-of-Traders dashboard showing positioning by market.
USPTO PatentsView / Open Data (free key) — Patents, inventors, assignees, citations; trademark data via separate USPTO APIs (free key). · An innovation map: who patents what, by company and region.

Demographics

Census Data API (keyless) — ACS, decennial, population estimates, business patterns (keyless light use; free key for volume). · A place dashboard: any ZIP/county's people, income, and housing at a glance.
Census Geocoder API (keyless) — Address → coordinates + census geographies (tract, block, district) — fully keyless. · A free address-to-district tool (find your reps and tract).
Census International Data API (keyless) — International population, fertility, mortality, and projections by country. · A world-population explorer with country projections to 2100.

Science & Space

NASA Open APIs (APOD, NEO, EPIC…) (keyless) — Astronomy Picture of the Day, near-Earth objects, Mars rover photos, EPIC Earth imagery. · A daily-space page with the picture of the day and the week's close asteroids.
NASA Earthdata / CMR (keyless) — Common Metadata Repository — search NASA Earth-science granules/collections (keyless reads). · A satellite-imagery finder for any place and date.
NSF Awards API (keyless) — National Science Foundation research grants — PIs, institutions, abstracts, amounts (keyless). · A research-funding tracker: what science the government is paying for.
Smithsonian Open Access API (free api.data.gov key) — 5M+ museum object records and CC0 images across Smithsonian collections. · A browsable open-access museum of millions of public-domain objects.
National Park Service API (free api.data.gov key) — Park info, alerts, activities, campgrounds, events, fees, hours (free NPS key via api.data.gov). · A trip-planner for every national park with live alerts and conditions.
RIDB Recreation API (free key) — Federal recreation facilities, campsites, permits across agencies (free RIDB key). · A campsite-availability finder across all federal lands.

Weather & Earth

National Weather Service API (keyless) — Forecasts, observations, active alerts/warnings, radar stations — fully keyless (UA required). · A fast, ad-free weather + active-alerts page for any US location.
NCEI Climate Data Online (CDO) (free key) — Historical climate normals, daily/monthly records by station (free NCEI token). · A climate-history page: how this date compares to the last century.
NOAA Tides & Currents (CO-OPS) (keyless) — Tide predictions, water levels, currents, met data at coastal stations (keyless). · A tide + coastal-conditions page for boaters and beachgoers.
Space Weather Prediction Center (keyless) — Solar activity, geomagnetic storms, aurora forecast, satellite-environment alerts (keyless). · An aurora + solar-storm tracker (will the lights be out, or visible?).
USGS Earthquake (FDSN) API (keyless) — Real-time + historical earthquakes (magnitude, depth, location) — keyless GeoJSON. · A live earthquake map with magnitude and "felt it?" reports.
USGS Water Services (NWIS) (keyless) — Streamflow, gauge height, groundwater, water quality at thousands of sites (keyless). · A flood/drought page showing your local river's level vs. normal.
USGS National Map / 3DEP (keyless) — Elevation, topo maps, lidar, hydrography, land-cover datasets (keyless product API). · An elevation/terrain explorer for any point in the US.

Energy & Environment

EIA Open Data API v2 (free key) — Energy prices/production/consumption — electricity, gas, oil, renewables (free EIA key). · A "what does energy cost?" dashboard by state and fuel type.
NREL Developer APIs (free api.data.gov key) — Solar resource (PVWatts), utility rates, alt-fuel stations, building data. · A rooftop-solar estimator using official sun + utility-rate data.
EPA AirNow API (free key) — Real-time air-quality index + forecasts by location (free AirNow key). · A clean air-quality page with health guidance for sensitive groups.
EPA Envirofacts API (keyless) — Regulated facilities, toxic releases (TRI), water/air permits, Superfund sites (keyless REST). · A "what's polluting near me?" map of regulated facilities by ZIP.
EPA UV Index API (keyless) — Hourly UV-index forecast by ZIP/city (keyless). · A sun-safety widget with daily UV peaks for your area.

Agriculture & Food

USDA Quick Stats API (free key) — Crop/livestock production, prices, yields, census of agriculture (free NASS key). · A crop-and-yield dashboard by state and commodity.
USDA FoodData Central API (free api.data.gov key) — Nutrient profiles for hundreds of thousands of foods (branded + standard reference). · A nutrition lookup for any food, by brand or generic name.
USDA ERS Data APIs (free api.data.gov key) — Farm income, food prices/CPI, international trade, ag-productivity series. · A "what's happening to food prices?" tracker with the drivers behind them.
USDA Local Food / Farmers Market (free key) — Farmers markets, CSAs, food hubs, on-farm markets by location (free key). · A "find a farmers market near me" map.

Health & Medicine

openFDA API (keyless) — Drug labels + adverse events, device + food recalls/enforcement, NDC directory (keyless tier). · A drug + device safety lookup: recalls and side-effect reports by product.
CDC Open Data (Socrata) (keyless) — Mortality, chronic disease, vaccination, surveillance datasets via Socrata SODA (keyless reads). · A public-health dashboard of the CDC's most-watched indicators.
CDC WONDER API (keyless) — Detailed mortality/natality/cancer query system (keyless XML POST). · A cause-of-death explorer by demographic and place.
PubMed E-utilities (keyless) — Search/fetch 35M+ biomedical citations + abstracts (keyless; free key lifts rate). · A plain-language medical-literature search over PubMed.
RxNorm API (keyless) — Normalized drug names, ingredients, interactions, NDC mappings (keyless REST). · A drug-name + interaction checker (generic ↔ brand, ingredient lookup).
ClinicalTrials.gov API v2 (keyless) — Registry of 450k+ clinical studies — status, conditions, locations, sponsors (keyless JSON). · A "find a clinical trial near me" search by condition.
CMS Data / Provider APIs (keyless) — Hospital/nursing-home/physician quality + cost data, Medicare datasets (keyless). · A hospital-quality compare page (better than Care Compare).
NPI Registry API (keyless) — Look up any US healthcare provider by NPI, name, specialty, location (keyless). · A provider-lookup that verifies a doctor's credentials and specialty.

Safety & Recalls

NHTSA vPIC + Recalls API (keyless) — VIN decode, vehicle specs; companion recalls/complaints/ratings APIs (keyless JSON). · A VIN decoder + recall checker: is this car safe?
CPSC Recalls API (keyless) — Consumer-product recalls + incident reports (keyless REST/JSON). · A product-recall alert page across toys, appliances, and gear.
FSIS Recall API (keyless) — Meat/poultry/egg-product recalls and public-health alerts (keyless). · A food-recall feed combined with openFDA for full grocery coverage.
FEMA OpenFEMA API (keyless) — Disaster declarations, public-assistance, flood-insurance (NFIP), housing-assistance (keyless). · A disaster-declaration map + flood-risk lookup for your county.
CISA KEV + Vuln APIs (keyless) — Known Exploited Vulnerabilities catalog + advisories (keyless JSON feeds). · A "patch this now" feed of actively-exploited vulnerabilities.
NVD CVE API (keyless) — National Vulnerability Database — CVEs, CVSS scores, CPE (keyless; free key lifts rate). · A searchable CVE database with severity and affected-product filters.

Transportation

FAA Airport Status / NASStatus API (keyless) — Airport delays, ground stops, ground delays, and reroutes (keyless). · A "should I expect delays?" airport-status board.
FAA NOTAM / Aircraft Registry (free key) — Notices to Air Missions + aircraft-registration lookups (free FAA key). · An aircraft-registration + NOTAM lookup for pilots and spotters.
BTS Transportation Stats (keyless) — Airline on-time, freight, transit, border-crossing data via Socrata (keyless reads). · An airline on-time-performance ranking by route and carrier.
FRA Safety Data (Socrata) (keyless) — Rail accidents/incidents, crossings, inspections via DOT Socrata (keyless reads). · A rail-safety map of grade crossings and incidents near you.

Jobs & Labor

USAJOBS Search API (free key) — Federal job openings — title, agency, grade, location, salary (free USAJOBS key + email). · A cleaner federal-jobs board with salary and grade filters.
Department of Labor API (free key) — OSHA inspections, wage-and-hour, MSHA, enforcement and statistics datasets (free DOL key). · A workplace-safety lookup: OSHA inspection history for any employer.
CareerOneStop API (free key) — Occupation profiles, wages, training programs, certifications (free key + token). · A career-explorer: pay, outlook, and training for any occupation.
O*NET Web Services (free key) — Occupational skills, tasks, abilities, job zones for 900+ occupations (free account). · A skills-to-jobs matcher built on official occupation data.

Civic & Elections

OpenFEC API (keyless) — Campaign finance — candidates, committees, contributions, expenditures (DEMO_KEY keyless). · A "who funds this candidate?" money-in-politics tracker.
CFPB Consumer Complaints API (keyless) — Searchable consumer complaints about financial products by company/product/state (keyless). · A "complaints about this bank/lender" lookup before you sign up.
CFPB HMDA Mortgage API (keyless) — Home Mortgage Disclosure Act loan-level data — approvals, rates, demographics (keyless). · A mortgage-fairness dashboard: who gets approved, where.
FTC do-not-call / API datasets (keyless) — Do-Not-Call complaint + robocall data, consumer-sentinel summaries (keyless). · A robocall-complaint heatmap by area code.
GAO Reports / Bid Protests (keyless) — Government Accountability Office reports, recommendations, bid-protest decisions (keyless feeds). · A "what is the government failing at?" tracker of GAO findings.

State & Local

Socrata Open Data API (SODA) (keyless) — The query layer under thousands of state/city portals (data.ca.gov, data.ny.gov, data.cityofchicago.org). SoQL over HTTP, keyless reads. · A unified search across every state/city Socrata portal at once.
CKAN Action API (keyless) — The catalog API behind data.gov and many state/city CKAN portals — dataset + resource search. · A cross-portal dataset finder spanning federal + state CKAN catalogs.
Esri ArcGIS REST (open layers) (keyless) — Public ArcGIS feature services many agencies publish (parcels, zoning, boundaries) — keyless reads on open layers. · A property/zoning lookup pulling each county's open GIS layers.
Open311 GeoReport v2 (keyless) — 311 non-emergency service requests + service lists (potholes, graffiti). Read endpoints keyless. · A city-services tracker: report and follow 311 requests in one place.