All projects on Base matching “mint”

Public Wikidata relationship graph (≤2 hops). Fixed property list; privacy bounds (no family/contact). Empty+reason → charged:false. Amp port.

Figshare article/dataset search (keyless; prior-403 recovery). POST {q|search_for|query}/{page_size?}. Empty -> 400 not charged.

DOAJ open-access articles search (keyless). POST {q|query} / {pageSize?}. Empty → 400 not charged.

DataCite DOI / research-data metadata (keyless). POST {query?} / {doi?} / {pageSize?}. Empty → 400 not charged.

Postal code lookup via api.zippopotam.us (keyless). Country + postal → places (name/state/lat/lon).

Zenodo records lookup (keyless). POST {q} and/or {record_id?,size?}. Empty → 404 not charged. Board swap vs openfda-device-event.

Zenodo communities search (keyless). POST {q|query}/{size?}. Empty -> 400 not charged. Adjacent to zenodo-record.

WoRMS Aphia marine taxonomy lookup (keyless, marine-scoped). POST {q|name|scientificname}. Empty -> 400 not charged.

WorldPop population-grid listing by ISO3 (keyless; hub.worldpop.org). POST {iso3}. Empty -> 400 not charged. worldbank/census adjacency disclosed.

World Bank API v2 indicator by country (keyless). POST {country,indicator} and/or {date?}. Empty → 404 not charged.

Wikipedia page summary via REST (keyless, User-Agent required). title (+ lang) → extract/thumbnail/urls.

Wikidata entity lookup (CC0, keyless). Q-id and/or search → trimmed labels/descriptions/aliases + small claim set.

Domain RDAP via IANA DNS bootstrap. Registrar/NS/status/events. SSRF-safe.

WHO GHO indicator data (keyless). POST {indicatorCode}/{top?}. Empty -> 400 not charged. worldbank/oecd-cli adjacency. Dimension + /api/{code}; NOT broken $filter.

Weather current + short forecast via Open-Meteo (keyless). Lat/lon required. Data only — not advice.

Multi-source verified token price (DeFiLlama + Coinbase spot). Data only, not advice. Soft-fail per source; no charge when all fail.

USGS NWIS instantaneous values (keyless). sites or stateCd (+ parameterCd default discharge 00060) → trimmed IV series.

USGS volcano elevated CAP alerts (keyless getCapElevated). POST {alert_level?} or {include_all:true}. Empty {} -> 400 not charged. earthquake/usgs-landslides/eonet/fema/humdata adjacency disclosed.

USGS FDSN landslide events (keyless; eventtype=landslide). POST {starttime?}/{endtime?}/{limit?}. Empty -> 400 not charged. earthquake/fema/eonet/humdata adjacency disclosed.

USGS EPQS point elevation (keyless). POST {lon,lat} and/or {x,y,units?}. Timeout ≤10s. Empty/5xx → 502/404 not charged.

USAspending.gov award search (keyless). POST {filters?}/{keyword?}/{limit?}. Empty -> 400 not charged. sec-ticker / bls / worldbank / treasury-debt adjacency disclosed.

Fetch one public HTML page → Markdown. robots.txt + SSRF guard + 1 MB / 5 s caps (amp port). Refusals 400 charged:false; fetch failures 502.

Canonicalize URL: force HTTPS, strip tracking, lowercase host, sort query. Offline. Amp port.

Batch convert free-text quantities (SI/imperial). Factors from NIST SP 811 / CODATA where cited.

UniProt protein search (keyless). POST {query} and/or {size?,accession?}. Empty → 404 not charged.

UN Comtrade public preview trade data (keyless). POST {reporterCode,period,partnerCode,cmdCode,flowCode} (+ optional typeCode/freqCode/clCode/maxRecords). Unpaid empty → 402; after settle empty/invalid → 400 charged:false. New trade vertical; no catalog adjacency.

UK national carbon intensity (keyless, UK-scoped). POST {period|from|to}. Empty -> 400 not charged.

Transaction receipt status/block/confirmations on Base or Ethereum via eth_getTransactionReceipt. Validates 0x hash BEFORE settle.

TVMaze show search (keyless). q → trimmed shows (name/type/language/genres/status/rating/url/image).

Read-only Base ERC-20 risk heuristics (honeypot/tax/liquidity/ownership). Data only, not advice. Free public Base RPCs. No charge on empty/failed. Port of amp token-risk.