Server data from the Official MCP Registry
Local JSON Schema structure inspection and privacy-safe fixture planning. Tools include inspect...
About
Local JSON Schema structure inspection and privacy-safe fixture planning. Tools include inspect...
Security Report
Schema Sieve is a well-designed local-first MCP server for JSON Schema inspection with strong security controls. Path traversal is properly mitigated, file operations are bounded, and sensitive data (examples, defaults, credentials) is intentionally omitted. Minor code quality observations around error handling and logging do not materially affect security. Supply chain analysis found 1 known vulnerability in dependencies (0 critical, 1 high severity). Package verification found 1 issue.
5 files analyzed · 5 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-mrfentmen-schema-sieve-mcp": {
"args": [
"-y",
"schema-sieve-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
schema-sieve-mcp
Schema Sieve is a local MCP tool for understanding JSON Schema files while planning tests. It focuses on the part that usually takes the most time: finding required paths, nested constraints, unions, arrays, and likely sensitive fields before writing fixtures.
Tools
inspect_schema: summarize types, properties, required fields, constraints, composition, and references.plan_fixture: produce placeholder paths such as<string>,<integer>, and<string:date-time>without inventing or copying test data.
Safety
- Only local JSON files are accepted.
- Paths are bounded by
SCHEMA_SIEVE_ROOT, which defaults to the workspace parent when launched from the package. - Files are capped at 2 MB and results are bounded.
- Examples, defaults, constants, and sensitive-like property names are omitted or marked as omitted.
- This is structural guidance, not a JSON Schema validator and not a security scanner.
Run
npm install
npm run build
node dist/index.js
Reviews
No reviews yet
Be the first to review this server!
More Developer Tools MCP Servers
Git
Freeby Modelcontextprotocol · Developer Tools
Read, search, and manipulate Git repositories programmatically
Fetch
Freeby Modelcontextprotocol · Developer Tools
Web content fetching and conversion for efficient LLM usage
Paperclip
Freeby Paperclipai · Developer Tools
Trending hip-hop artist momentum scores across four cultural dimensions.
Toleno
Freeby Toleno · Developer Tools
Toleno Network MCP Server — Manage your Toleno mining account with Claude AI using natural language.
mcp-creator-python
Freeby mcp-marketplace · Developer Tools
Create, build, and publish Python MCP servers to PyPI — conversationally.
MCP Marketplace
Freeby mcp-marketplace · Developer Tools
Search and install MCP servers from inside your AI client.