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APITier

APITier provides developer APIs and AI-agent-ready tools for global address validation (120+ countries), UK postcode lookup, email verification, phone validation, VAT number checking, barcode generation, QR code generation, company search, checkout fraud signals, and geolocation — all accessible via REST API or MCP tools for Claude, Cursor, and Windsurf.

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Authority
50 reach 0 · trust 10 · quality 25 · freshness 15
Tier
listed
llms.txt
https://www.apitier.com/llms.txt
llms-full.txt
https://www.apitier.com/llms-full.txt
Sections
9
Links
46
Size
9226 bytes
Registered
2022-05-30
Country
— Publisher location unknown; CDN address excluded
Country evidence
No published address evidence collected yet
Categories
AI and machine learning · Developer tools
For agents
Documentation: developer or product docs worth reading, nothing to call
First seen
2026-10-24T20:28:01.780Z
Last checked
2026-10-24T20:28:07.042Z
Badge
Agent Web Map badge for apitier.com

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-24T20:28:01.788Z. Cached copy · Source on apitier.com

# APITier

> APITier provides developer APIs and AI-agent-ready tools for global address validation (120+ countries), UK postcode lookup, email verification, phone validation, VAT number checking, barcode generation, QR code generation, company search, checkout fraud signals, and geolocation — all accessible via REST API or MCP tools for Claude, Cursor, and Windsurf.

## Core Platform

- [Homepage](https://www.apitier.com): AI agent infrastructure platform and API marketplace
- [API Catalogue](https://www.apitier.com/api-catalogue): Complete list of all available APIs with documentation
- [MCP Server](https://www.apitier.com/mcp-server): Model Context Protocol server — connects Claude, Cursor, and Windsurf to production APIs
- [AI Agent Infrastructure](https://www.apitier.com/ai-agent-infrastructure): Infrastructure layer for AI agentic workflows
- [Pricing](https://www.apitier.com/pricing): Credit-based pricing — pay per API call, no subscriptions required for most APIs
- [Free Tools](https://www.apitier.com/free-tools): No-login tools for phone validation, VAT checking, QR code and barcode generation, UK postcode browser, India pincode browser, global address validation, and UK return fraud postcode map

## Address & Location APIs

- [UK Postcode Lookup API](https://www.apitier.com/api-catalogue/postcode-lookup-api): Returns all Royal Mail PAF address records for a UK postcode. Sub-100ms response.
- [UK Address Lookup API](https://www.apitier.com/api-catalogue/address-lookup-api): Search UK addresses by partial address string. Ideal for checkout autocomplete.
- [UK Address Autosuggest API](https://www.apitier.com/api-catalogue/address-autosuggest-api): Real-time type-ahead address autocomplete for UK address input fields.
- [UK Rooftop Geocoding API](https://www.apitier.com/api-catalogue/uk-rooftop-geocoding-api): Returns precise latitude and longitude for any UK postcode or address, accurate to rooftop level.
- [UPRN Lookup API](https://www.apitier.com/api-catalogue/uprn-lookup-api): Returns the Unique Property Reference Number (UPRN) for any UK address.
- [India Pincode API](https://www.apitier.com/api-catalogue/india-pincode-api): Returns state, district, taluk, and post office data for any Indian pincode.
- [India Pincode Browser](https://www.apitier.com/india/pincode): Free no-login browser for all Indian pincodes. Browse by postal zone (1–8), search by 6-digit pincode or 3-digit prefix, see district, state, and sample place names. 900+ prefixes across 8 zones. No API key required.
- [UK Postcode Browser](https://www.apitier.com/uk/postcode): Free no-login browser for all UK postcode districts. Browse by region, see postcodes, addresses, and district-level data. Covers all 124+ UK postcode areas. No API key required.
- [Global Address Validation Hub](https://www.apitier.com/address-validation): Free address validation explorer covering 120+ countries. UK addresses validated against Royal Mail PAF; all other countries via OpenStreetMap. No
…

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1. POST https://agentwebmap.com/v1/sites/apitier.com/claims and keep claim_id and claim_secret private.
2. Publish the verification line "AgentWebMap verification: <token>" (token from step 1) in https://apitier.com/llms.txt, or use the DNS, meta-tag or well-known method the response describes. This only verifies the listing; your website and domain remain yours.
3. POST https://agentwebmap.com/v1/sites/apitier.com/verify with {"claim_id": "...", "claim_secret": "..."}.
4. Save the api_key from the answer; it manages the listing (PATCH https://agentwebmap.com/v1/sites/apitier.com).
MCP equivalent: tools begin_ownership_claim, then verify_domain, at https://agentwebmap.com/mcp. Docs: https://agentwebmap.com/docs#verify

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