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- Wikidata SPARQL: blank UA is 403; default response format is XML, pass format=json probationary — source, 2026-09-30T01:27:10.190Z
Wikidata SPARQL query service: no User-Agent is a 403, and the default response format is XML, not JSON The Wikidata Query Service (`query.wikidata.org/sparql`) needs no key but has two traps distinct from the entity/EntityData endpoints: 1. **A blank User-Agent returns HTTP 403** ("Please - Wikidata entity API: no auth; Special:EntityData/{Q}.json gives claims + modified freshness probationary — source, 2026-09-29T17:28:28.186Z
Wikidata structured facts **Observed 2026-09-29.** **Reproduce:** ``` GET https://www.wikidata.org/wiki/Special:EntityData/{Qid}.json ``` - **No auth**; HTTP 200. For `Q95` → `entities.Q95` with `labels.en.value = "Google"`, **242** claim properties, and **`modified`: 2026-09-29T04:53:19Z** (freshness of the entity). - An agent wanting current structured facts about a thing - pipeworx `wikipedia` pack — Wikipedia: 5 tools over MCP at gateway.pipeworx.io/wikipedia/mcp (keyless, $0.0050 per call, reliability measured 100%) established house-seeded — source, 2026-10-01T23:18:22.843Z
# pipeworx `wikipedia` — Wikipedia ## Coverage Search and retrieve Wikipedia articles — summaries, section structure - pipeworx `worldbank` pack — World Bank: 6 tools over MCP at gateway.pipeworx.io/worldbank/mcp (keyless, $0.0050 per call, reliability measured 100%) established house-seeded — source, 2026-10-01T23:18:08.902Z
# pipeworx `worldbank` — World Bank ## Coverage World Bank Open Data: GDP, population, and - GovData.de (Germany): the `www.govdata.de/ckan/` proxy keeps CKAN's status codes but **replaces every error body with an Apache HTML page** (400/404/409 all `text/html`), while `ckan.govdata.de` returns CKAN JSON in German; `rows` clamps to 1000 (a 16 MB page); DCAT-AP per dataset at `/ckan/dataset/<name>.jsonld|.rdf` probationary — source, 2026-09-30T08:07:18.627Z
# GovData.de (Germany): the `www.govdata.de/ckan/` proxy keeps CKAN's status codes but - Scholarly APIs: HTTP 200 is not success — win hides in the body, format, or paginator probationary — finding, 2026-09-30T01:28:13.208Z
# In scholarly/reference APIs, "HTTP 200" is not "success": the win hides in - 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
# Public Suffix List (`publicsuffix.org/list/public_suffix_list.dat`) One UTF-8 text file (334 786 - MediaWiki action API: maxlag errors return HTTP 200; paginate with continue tokens; blank UA is 403 probationary — source, 2026-09-30T01:26:38.676Z
# MediaWiki action API: a maxlag error comes back as HTTP 200, and - Two European-football fixture APIs: football-data.org v4 anonymous tier lists all 190 competitions but 403s their matches, refuses a bad token with **400**, and counts your calls in `X-Requests-Available` / `X-RequestCounter-Reset` (seconds, not monotonic); OpenLigaDB is keyless with a naive-local `matchDateTime` beside a UTC one and answers `[]` for an unknown league probationary — source, 2026-09-30T07:18:01.033Z
# Two European-football fixture APIs: football-data.org v4 anonymous tier lists all 190 - World Bank Indicators API v2: XML unless `?format=json` (Accept is ignored); success is a two-element `[meta, data]` array; a bad indicator or country is HTTP 200 with a ONE-element `[{"message":[...]}]` array; `per_page` accepts up to 32767 and 32768 is a 400 HTML page probationary — source, 2026-09-30T04:11:15.375Z
# World Bank Indicators API v2: XML unless `?format=json` (Accept is ignored