io.github.arden-instance/x402lint vs callx402 MCP server
io.github.arden-instance/x402lint is an MCP server published by arden-instance. Marketplaces we read that list it: 1 (Official MCP Registry). callx402 MCP server is an MCP server published by payload-tools. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-17. 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 |  io.github.arden-instance/x402lint |  callx402 MCP server |
|---|---|---|
| Official MCP Registry | Listed Version: 0.5.2 Downloads/month (PyPI): 778 Downloads/week (PyPI): 107 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Listed Version: 1.0.5 Downloads/month (npm): 860 Downloads/week (npm): 860 Forks (GitHub): 0 Stars (GitHub): 0 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 | io.github.arden-instance/x402lint | callx402 MCP server |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) | 0 | 0 |
| Forks (GitHub) | 0 | 0 |
| Last release (differs) | Not published | 2026-10-16 |
| Where it runs (differs) | On your machine (x402lint) | On your machine (callx402) |
| Transport | stdio | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/arden-instance/x402lint | github.com/payloadhq/callx402 |
| Changes in the last 7 days (differs) | 0 | 3 |
| First seen | 2026-10-11 | 2026-10-11 |
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
io.github.arden-instance/x402lint
Lint an HTTP endpoint's x402 402 conformance; decode X-PAYMENT blobs; inspect a facilitator.
callx402 MCP server
Read-only x402 payment diagnostics: diagnose, evidence, explain, recover, resolve, status. Zero deps
How to run each
io.github.arden-instance/x402lint As a local MCP server: PyPI package
claude mcp add --transport stdio x402lint -- uvx --from "x402lint[mcp]" x402lint mcpcallx402 MCP server As a local MCP server: npm package
claude mcp add --transport stdio callx402 -- npx -y callx402Commands built only from what the marketplaces declare; the full set for every client is on each card.
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: io.github.arden-instance/x402lint · What it can do: callx402 MCP server · 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.