PubChem Compound Search & Lookup — Official NIH API

UK VAT HMRC API

nocodeventure/uk-vat-hmrc-api

Supports Proof of Check. Scrapes UK VAT numbers using the official HMRC service. Validates UK VAT numbers against the official HMRC database.

Look up PubChem compounds by name or CID and return normalized identifiers, molecular formula, weight, SMILES, InChI, synonyms, and PubChem URLs via the public PUG REST API.

Healthcare Provider Search - NPI Registry Data

lulzasaur/healthcare-license-scraper

Search healthcare providers in the NPPES NPI Registry by name, NPI, state or provider type. Export NPI numbers, credentials, taxonomy and practice locations. NPI registration is not state license verification.

Search PubChem for chemical compound data — structures, properties, synonyms, biological activity. Chemistry research, pharma, toxicology.

PubChem Compound Lookup — Chemistry API for Pharma R&D

azureblue/pubchem-compound-scraper

Look up chemical compounds in PubChem by name. Returns CID, molecular formula, weight, SMILES, InChI, IUPAC name, physicochemical properties, description and synonyms.

Cadastre France - API Cadastre Officielle IGN

devnaz/cadastre-france

Récupérez les données cadastrales officielles françaises depuis des coordonnées GPS : code INSEE, section cadastrale, commune, département, feuille. API officielle IGN (Institut Géographique National). Idéal pour immobilier, urbanisme, identification parcellaire et études de marché.

Registration and expiry dates via RDAP.

US Address Geocoder: Census Bureau Lookup

naimurhasanrwd/census-geocoder-scraper

Geocode US street addresses to coordinates and standardised components via the official US Census Bureau geocoder. No login, no proxy, no browser.

GitHub Releases Monitor: New Repo Releases

accountable_eel/github-releases-monitor

GitHub release notifications and dependency release alerts: track new versions of github repos. One row per release, only-new-since-last-run. Works without a token. $1 per 1,000 releases; a miss is free.

Bulk-resolve chemical names to PubChem records. Returns CID, molecular formula, molecular weight, IUPAC name, SMILES, InChIKey and the PubChem page link. Ideal for chemistry, pharma and materials data enrichment. Free public-domain NCBI data, no key.