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Changelog

Stay informed about the latest updates and improvements to our address validation services with our changelog. View release notes and see what's new.

June 2026​

  • [Integration] Agent skills for Address Lookup widget and API integration (2026-06-18, v0.2.0)
    • New azn-address-lookup skill covers the @addresszen/address-lookup vanilla JS widget
    • New azn-api-integration skill covers direct HTTP integration with the AddressZen API
    • The addresszen-react skill has been renamed to azn-react; update with npx skills add addresszen/skills
  • [API] New AZ-Source-IP response header echoes the detected client IP on every API response (2026-06-14)
  • [Address Lookup] React component for embedding address lookup in React applications (2026-06-12, v2.0.0)
    • @addresszen/react provides an <AddressLookup> component compatible with React 18 and 19, with two integration modes — default input and wrap-around-your-own-input — and the full callback surface exposed as props
  • [Integration] Agent skills for Claude Code, Cursor, and Codex (2026-06-12, v0.1.0)
    • New addresszen/skills plugin ships a quickstart and reference docs for Address Lookup and the React component
    • Install with npx skills add addresszen/skills
  • [Address Lookup] TypeScript declarations now shipped from compiled output (2026-06-12, v2.3.3)
  • [Dashboard] Changelog feed in the account dashboard (2026-06-10)
    • Recent product updates now appear in the account sidebar, keeping you informed without leaving the dashboard
  • [Security] Security update for Address Lookup (2026-06-06, v2.3.2)
    • Resolves a regular expression denial of service via cookie names (GHSA-hfxv-24rg-xrqf) and prototype pollution issues in earlier axios versions; update to the latest widget version to pick up the fix

May 2026​

  • [Documentation] Interactive API reference at openapi.addresszen.com (2026-05-28)
    • Rendered OpenAPI reference and raw spec downloads, refreshed automatically with every spec release
  • [Dashboard] Reseller dashboard (2026-05-17)
    • Reseller organizations now see a dedicated dashboard summarizing their licensees, active client count, and usage costs for any billing period
    • Customer breakdown table shows each licensee's address and API key, with sortable numeric columns and CSV export
    • Period picker and deep-links jump straight to a licensee's keys and dates

April 2026​

  • [Billing] Credit notes available in your account (2026-04-28)
    • View credit notes alongside invoices from the billing section
  • [Billing] Statement of account (2026-04-28)
    • Download a consolidated statement of invoices, payments, and credit notes for any period
  • [Dashboard] Organization deletion (2026-04-27)
    • Permanently remove an organization and its data from your account when it is no longer needed
  • [Dashboard] Multi-organization accounts (2026-04-24)
    • Switch between organizations from a single login
    • Single-organization users are routed straight to their organization page on sign-in
  • [Billing] Reduced 3D Secure (SCA) prompts on automated top-ups (2026-04-23)
  • [Data] Corrected ISO 3166-1 alpha-3 country code for Kosovo (2026-04-23)
  • [Dashboard] New URL checker tool for Allowed URLs (2026-04-16)
    • Test whether a given domain matches your account's allowed URL configuration before going live
  • [Dashboard] Documentation search integrated into the dashboard (2026-04-14)
    • Search the documentation directly from your account using DocSearch
  • [Data] Fixed Republic of Ireland address line formatting on HERE datasets (2026-04-08)
  • [Logging] CSV transaction usage export now includes a licensee name column (2026-04-02)
  • [Authentication] Passkey (WebAuthn) sign-in (2026-04-01)
    • Sign in using Touch ID, Windows Hello, or hardware security keys instead of a password

March 2026​

  • [Dashboard] Dashboard UI refresh (2026-03-27)
    • Redesign with dark mode, smooth theme transitions, and modernized screens
    • Improved pagination and notification UX
  • [Dashboard] Account notifications (2026-03-26)
    • In-dashboard notification bell surfacing recent account events, with email recipients managed per organization
  • [Dashboard] Per-dataset toggles on the API key dashboard (2026-03-26)
    • Enable or disable individual datasets on a key directly from the keys page
  • [API] GET /keys/:key/details returns expanded key metadata (2026-03-25)
    • Response now includes name, contexts, datasets, and notification settings
  • [Dashboard] Self-serve organization creation (2026-03-11)
    • Create new organizations from your account without contacting support

February 2026​

  • [Dashboard] Organization member invitations (2026-02-25)
    • Invite teammates to your organization by email and review pending invitations from the organization page
  • [Dashboard] Organization accounts (2026-02-20)
    • Accounts are now organization-based - invite teammates, share API keys, and assign roles within a single billable entity
  • [Dashboard] Account roles: admin, developer, and finance (2026-02-20)
    • Assign each organization member a role to scope access to keys, billing, and developer settings
  • [API] Monthly lookup limits now configurable on API keys (2026-02-04)
    • Set a per-calendar-month cap independently of the daily limit, with usage rolling over at the start of each month

December 2025​

  • [Data] Added the BEV (Bundesamt für Eich- und Vermessungswesen) dataset for Austria, providing comprehensive and authoritative address coverage

November 2025​

  • [API] New dataset filter parameter allows you to restrict address searches to specific datasets within a country. E.g. datasets=nyb for latest new builds only.
  • [API] US Address Validation API now supports fuzzy matching on the state parameter, improving match rates for addresses with minor state name variations

October 2025​

  • [Data] Northern Ireland dataset update frequency increased from quarterly to weekly
  • [API] Non-US address data now parsed into individual structured fields (building number, street name, unit) rather than just address lines
  • [Data] Fixed an issue affecting Republic of Ireland addresses where administrative data may be missing for some premises

September 2025​

  • [API] Streamlined OpenAPI specification designed to reduce context length for LLM-assisted development
  • [Documentation] LLM-optimized documentation with llms.txt context file and universal markdown export (add .md to any documentation URL)
  • [API] Enhanced geospatial accuracy and intelligent country detection for improved search precision

August 2025​

  • [API] Fixed an issue with the Email Validation API to handle queries without proper encoding

July 2025​

  • [API] CSV usage log export now includes a lookups column showing how many lookups each request consumed. See the CSV usage log API for details.
  • [Performance] JavaScript libraries now served directly from the API for improved caching, reduced latency, and simplified integration

June 2025​

  • [Data] Improved Republic of Ireland coverage for the standard dataset. All addresses now include Eircode (Irish postal codes)
  • [Documentation] Documentation site now generates an LLM.txt file and .md files to better support language model integration
  • [API] Improved handling of ordinals and directionals for US addresses

May 2025​

  • [Data] Improved and extended UPRN matching for Royal Mail Multiple Residence and Not Yet Built addresses
  • [Data] Additional HERE datasets included
  • [Data] Localized and improved South Korea coverage with MOIS dataset

April 2025​

  • [Data] Localized and improved Belgium coverage with FODBOSA
  • [Data] Localized and improved Japan coverage

March 2025​

  • [Address Lookup] Security update for a third-party dependency (2025-03-26, v2.3.1)

February 2025​

  • [Data] Expanded Canada coverage with Canada National Address Register dataset

January 2025​

  • [Integration] WooCommerce plugin for WordPress stores (2025-01-21, v1.0.0)
    • Address autocomplete and postcode-based address selection at checkout, with admin configuration
  • [Data] Expanded Denmark coverage with SDFI dataset

May 2024​

  • [Integration] Zapier app for address verification (2024-05-22)
    • Verify and standardize addresses in automated workflows
  • [API] Released /addresses/verify API for USA CASS Verification

April 2024​

  • [Data] Netherlands (Kadaster) address dataset incorporated
  • [Data] Norway (Kartverket) address dataset incorporated
  • [Performance] Improved P95 and P99 latency

February 2024​

  • [Data] Search improvements for Iberian languages: Spanish, Catalan, Galician and Basque
  • [Address Lookup] Country selection is synced if country: is defined in outputFields

January 2024​

  • [Data] Australia GNAF address dataset added
  • [API] CASS Certified USA address verification generally available

November 2023​

  • [Data] Improvements to geospatial biasing for USA addresses

October 2023​

  • [API] Key settings can be updated via POST /keys/:key API
  • [API] Available datasets accessible through GET /keys/:key/details API
  • [Address Lookup] Added the ability to fix Address Lookup

September 2023​

  • [Address Lookup] Added new callback for changes in country or context
  • [Address Lookup] Country is automatically detected by IP address

August 2023​

  • [Data] Hong Kong dataset included
  • [Data] Macau dataset included
  • [Data] Taiwan dataset included
  • [Data] India dataset included

July 2023​

  • [Data] Asia Pacific data now available
  • [Data] Oceania dataset included

June 2023​

  • [Data] South America data now available
  • [Data] Middle East & Africa dataset included

May 2023​

  • [Data] Eastern Europe data now available

April 2023​

  • [Data] Western Europe data now available for Address Lookup

March 2023​

  • [Data] Improved Zip and ZIP+4 searching on USA datasets
  • [Data] Improved apartment searches for GBR datasets

January 2023​

  • [Data] Rooftop geolocations now available for Northern Ireland. Please contact us to have this enabled on your account
  • [Data] UPRNs now available for Northern Ireland. Please contact us to have this enabled on your account
  • [API] /addresses/cleanse GBR Cleanse API now available

December 2022​

  • [API] Phone Validation API now generally available
  • [Data] UK post towns are now titlecased (instead of all caps)

November 2022​

  • [API] Email Validation API now available
  • [Security] Wildcard subdomain allowed URLs available. Add *.domain.com to allow requests from domain.com and all related subdomains
  • [Address Lookup] Search improvements: Better search for numeric property numbers with preceding zeros. Improved search for address ranges

October 2022​

  • [Security] Allowed URLs now permit subdomain wildcards. E.g. *.example.com will match example.com as well as all subdomains

June 2022​

  • [Data] Irish Addresses (Eircode) now supported by address autocomplete. Contact our support team to have this enabled on your account
  • [API] /addresses API now provides reverse geocoding if lon= and lat= query arguments are supplied. Results are ordered by proximity to the supplied geospatial points

May 2022​

  • [Data] UK Alias addresses now generally available
  • [API] /keys/:key API now returns a contexts which correlates with the user's locality

April 2022​

  • [Data] Welsh PAF addresses now generally available