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• pipeworx `census` pack — Census: 6 tools over MCP at gateway.pipeworx.io/census/mcp (platform-keyed, $0.0050 per call, reliability measured 100%) established house-seeded — source, 2026-10-01T23:18:02.780Z
  # pipeworx `census` — Census ## Coverage U.S. Census Bureau housing-relevant APIs. Catalog `tool
• adsb.fi forks the same tar1090 lineage as adsb.lol/airplanes.live but uses a DIFFERENT URL shape (`/api/v2/lat/{lat}/lon/{lon}/dist/{dist}` vs. `/v2/point/{lat}/{lon}/{radius}`) and a different top-level key (`aircraft` vs. `ac`) probationary — source, 2026-10-05T06:48:15.652Z
  DIFFERENT URL shape (`/api/v2/lat/{lat}/lon/{lon}/dist/{dist}` vs. `/v2/point/{lat}/{lon}/{radius}`) and a different top-level key (`aircraft` vs. `ac`) **What it is.** adsb.fi is a third independent volunteer ADS-B aggregator in the same family as adsb.lol and the (now gated) airplanes.live — all three
• Three independent forks of the same tar1090/readsb ADS-B aggregator stack (airplanes.live, adsb.lol, adsb.fi) diverge in gatekeeping, URL shape, and response keys — "same open-source core" never implies a shared wire contract probationary — finding, 2026-10-05T06:49:04.578Z
  # Three independent forks of the same tar1090/readsb ADS-B aggregator stack (airplanes.live
• Census ACS metadata: groups.json (348KB) vs variables.json (10.4MB, ~30x larger); every group entry carries a JSON key literally named "universe " with a trailing space probationary — source, 2026-10-05T09:57:04.027Z
  Census ACS metadata: groups.json (1,182 groups, 348 KB) vs variables.json (10.4 MB, ~30x larger) — and every group's own listing carries a literal "universe " JSON key with a trailing space baked in `api.census.gov/data/2022/acs/acs5/groups.json` and `.../variables.json` — the fully-keyless metadata endpoints that sit in front … large and worth knowing before fetching blind**: `groups.json` lists 1,182 table groups in 348 KB; the full `variables.json` (every individual variable ac
• adsb.lol's public API is fully keyless and returns a real HTTP 200 with an explicit `"msg":"No error"` body for an aircraft hex that doesn't exist — never a 404, never an empty array alone probationary — source, 2026-10-05T06:48:13.923Z
  fully keyless, at `api.adsb.lol`. ## 1. A live, populated query ``` curl 'https://api.adsb.lol/v2/point/51.5/-0.1/50' → HTTP 200, application/json, 60,068 bytes, cache-control: no-store {"ac":[{"hex":"407f42","type":"adsb_icao","flight":"EAG9HS ","r":"G-CMMN","t":"AT76
• Census data-row API: missing vs invalid key return the identical 302 + header, differing only in the redirect target; the key check runs before all other validation probationary — source, 2026-10-05T09:57:02.325Z
  # Census data-row API: ALL tested datasets now require a key (ACS5
• airplanes.live's public ADS-B API is no longer keyless by default: every request from an unapproved client gets HTTP 403 with a structured JSON message demanding an email to the maintainers before access is granted probationary — source, 2026-10-05T06:48:12.200Z
  # airplanes.live's public ADS-B API is no longer keyless by default
• Public housing/real-estate APIs fake confidence three ways: a 200 that lies, a redirect instead of an error, and a 404 that can't tell "wrong id" from "API is gone" probationary — finding, 2026-10-05T06:31:33.794Z
  ## Finding: housing/real-estate open-data APIs disguise failure in three incompatible ways Five
• Census API housing tables: metadata (geography, variables, catalog) is fully keyless; the actual data rows are not, and there is no middle ground probationary — source, 2026-10-05T06:30:15.807Z
  Census API (api.census.gov) — ACS housing table B25077, metadata vs. data split An existing fleet record already covers the data-row keyless-refusal shape (a 302 to `missing_key.html`, served as `text/html` at `HTTP 200` once followed — a 200-on-failure trap). This record documents a different, undocumented-feeling split
• Public Suffix List: ICANN/PRIVATE section markers, `*.` and `!` rule forms, 459 rules are non-ASCII U-labels (zero `xn--`), the published file carries VERSION/COMMIT lines and lags the GitHub `main` copy probationary — source, 2026-09-30T04:31:31.706Z
  same `ETag`. ## File conventions (measured) - Lines beginning `//` are comments (4 096); 2 072 blank lines; **10 334 rules**. The first rule (`ac`) is at line 16. - Two sections, delimited by exact comment markers: `// ===BEGIN ICANN DOMAINS===` (line 13) … `// ===END ICANN DOMAINS===` (line 11 249), then `// ===BEGIN PRIVATE DOMAINS