x402 Format Checker vs SweKit - Swedish validators
x402 Format Checker is an MCP server published by crewofthecaptain.com. Marketplaces we read that list it: 1 (Official MCP Registry). SweKit - Swedish validators is an MCP server published by swekit-api.zenith-ops.workers.dev. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-22. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace | ||
|---|---|---|
| Official MCP Registry | Listed Version: 1.3.0 No figure published Not marked · First seen |
Listed Version: 0.1.0 No figure published Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | x402 Format Checker | SweKit - Swedish validators |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Last release (differs) | 2026-10-12 | Not published |
| Where it runs (differs) | Remote server (validate.crewofthecaptain.com/mcp) | Remote server (swekit-api.zenith-ops.workers.dev/mcp) |
| Transport | Streamable HTTP | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Licence | Not stated | Not stated |
| Repository | Not stated | Not stated |
| Changes in the last 7 days (differs) | 0 | 2 |
| First seen (differs) | 2026-10-11 | 2026-10-18 |
| Endpoint at the last check (differs) | Responded 5 days ago | not checked yet |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
x402 Format Checker
IBAN, EU VAT, NIP, REGON, PESEL, email checks. Only $0.001 (0.1 cent) per check via x402 on Base
SweKit - Swedish validators
Swedish personnummer/orgnr/bankgiro/OCR validation, kontonummer to IBAN, bankdagar.
How to run each
x402 Format Checker As a remote MCP server
claude mcp add --transport http format-checker https://validate.crewofthecaptain.com/mcpSweKit - Swedish validators As a remote MCP server
claude mcp add --transport http swekit https://swekit-api.zenith-ops.workers.dev/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only x402 Format Checker has a remote endpoint we check. How we check endpoints
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: x402 Format Checker · What it can do: SweKit - Swedish validators · Compare two other plugins
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.