Answer the question in front of you
Paste the address from the order, confirm the place and format, and move on. There is no trial clock, account or implementation project before the first lookup.
COMPARE · POSTCODEDOG VS SMARTY
PostcodeDog vs Smarty
A free postal check, not a subscription.
Smarty is an address-verification platform with APIs, list processing and an MCP server, aimed at USPS and international address data. PostcodeDog is a focused postal lookup: free, no account, with a browser, batch, API and MCP for 82 countries.
SIDE BY SIDE
What changes with PostcodeDog
| Capability | UsPostcodeDog | Smarty | Why it matters |
|---|---|---|---|
| Scope | Post code lookup and format checks | Full address verification platform | Start with the question, not the platform. |
| Access | Free, no account, no credits | 42-day trial, then a paid subscription | A quick check stays free. |
| Batch | Paste up to 50 rows, review, export CSV | List processing and API workflows | No setup or subscription to clear a queue. |
| MCP | Built-in MCP server at /mcp | MCP server with an active subscription or trial, plus auth | Agents can connect without a plan. |
| Languages | 13 interface languages | English-first product and documentation | Local teams can work in their own language. |
WHERE POSTCODEDOG WINS
A focused lookup, free for the whole team.
Batch without procurement
Fifty rows per run in the browser, with valid, ambiguous and missing statuses and a CSV export. The operations team can start without a contract.
Free for humans and agents
The JSON API and MCP server are part of the free product. Support, checkout and AI clients all reach the same lookup.
TRY IT
Try the difference
Paste a full address, a city or a post code. Country and format are detected.
Free. No account, no API key.THE LOOP
Paste → resolve → verify
The same three steps work whether the address is a US ZIP, a UK outcode or a Japanese 〒.
- 01
Paste what you have
A full address, a city, or just a code. The parser accepts the whole line.
- 02
Confirm the place and format
Country, region and post code format are shown together, with nearby codes for a second option.
- 03
Send it to the label
Copy the verified code or export the batch. Platform and carrier pages keep local rules in view.
About
About Smarty
Smarty validates and standardizes addresses globally, with US and international APIs, list processing, a 42-day free trial and paid plans. Its MCP server requires an active subscription or trial, plus API authentication.
PostcodeDog is a free 82-country postal lookup with batch, API and MCP, built for quick code and format checks.
When PostcodeDog is the better fit
- 01You need a quick post code check, not full address verification.
- 02You want batch checks without a trial or subscription.
- 03You want a free API and MCP server for internal tools.
- 04Your support team works across several languages.
Is Smarty free?
Smarty offers a 42-day free trial and paid plans. PostcodeDog’s lookup, batch, API and MCP are free and need no account.
Do they do the same job?
Smarty is built for address verification and standardization; PostcodeDog is built for postal-code lookup, format checks, batch and agents.
Is PostcodeDog free?
Yes. Lookups, batch checks, the JSON API and the MCP server are free and need no account.
Can I use it in an AI agent?
Yes. The MCP server is at /mcp, and the JSON API is free to call.
Compare
Start with the lookup, not the project.
Paste an address or try 90210, SW1A or 100-0001. No account needed.