sosa-compliance-checker vs JSON Validator API
sosa-compliance-checker is a plugin bundle for AI coding tools published by MSApps-Mobile. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). JSON Validator API is an MCP server published by Br0ski777. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-29. 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 |  sosa-compliance-checker |  JSON Validator API |
|---|---|---|
| Claude Code: claude-plugins-community | Listed Version: 0.2.0 Forks (GitHub): 2 Stars (GitHub): 9 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 1.1.0 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 | sosa-compliance-checker | JSON Validator API |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 9 (better) | 0 (worse) |
| Forks (GitHub) (differs) | 2 (better) | 0 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | Installs as a plugin bundle | Remote server (json-validator.api.klymax402.com/mcp) |
| Transport (differs) | Not stated | SSE |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 1 | Not a bundle |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/msapps-mobile/claude-plugins | github.com/br0ski777/json-validator-x402 |
| Changes in the last 7 days | 0 | 0 |
| First seen (differs) | 2026-10-12 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | Not responding since 2026-10-13 |
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
sosa-compliance-checker
Audit your Claude plugins, skills, and coding agents against the SOSA methodology — Supervised Orchestrated Secured Agents. Scans your entire plugin ecosystem and evaluates each component against the four SOSA pillars: Supervised, Orchestrated, Secured, and Accountable.
JSON Validator API
JSON syntax validation, JSON Schema checking, structure stats. x402 micropayment.
How to run each
sosa-compliance-checker As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install sosa-compliance-checker@claude-communityJSON Validator API As a remote MCP server
claude mcp add --transport sse json-validator https://json-validator.api.klymax402.com/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only JSON Validator API 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: sosa-compliance-checker · What it can do: JSON Validator API · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. 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.