# FabTally Guard MCP server

Verify before you act: deps-check, x402-preflight, json-repair & url-read for agents.

## Links
- Registry page: https://www.getdrio.com/mcp/io-github-zvmzaretsky-fabtally-guard
- Repository: https://github.com/zvmzaretsky/fabtally-guard-mcp
- Website: https://guard.fabtally.com

## Install
- Endpoint: https://guard.fabtally.com/mcp
- Auth: Not captured

## Setup notes
- Remote endpoint: https://guard.fabtally.com/mcp

## Tools
- deps_check (Vet a dependency before install (paid $0.003)) - PAID $0.003 (x402, USDC on Base). Vet a software package BEFORE installing it. Returns existence, latest-vs-requested, deprecation/yank markers, known CVEs from OSV.dev, typosquat similarity to popular names, SPDX license, and age/download signals with a plain-English risk verdict. Args: ecosystem (npm|pypi|crates), name, version (optional). Without payment returns the x402 challenge; pass x_payment to settle. Endpoint: https://guard.fabtally.com/mcp
- x402_preflight (Verify an x402 endpoint before paying (paid $0.002)) - PAID $0.002 (x402, USDC on Base). Verify another x402 endpoint BEFORE paying it: does an unpaid call return a valid x402 v2 402 challenge? do the quoted amount/asset/network/payTo match the site's /.well-known/x402? is TLS valid, host reachable, openapi present? Returns pass/fail + per-check reasons + the parsed price you would pay. Args: url. Without payment returns the x402 challenge; pass x_payment to settle. Endpoint: https://guard.fabtally.com/mcp
- json_repair (Repair near-miss LLM JSON to a schema (paid $0.002)) - PAID $0.002 (x402, USDC on Base). Coerce near-miss LLM JSON to a JSON-Schema-conformant object: strip code fences/prose, fix trailing commas/quotes/unquoted keys, normalise Python literals, balance brackets, then coerce types, apply defaults, and drop extraneous keys. Returns the repaired object OR precise per-field errors. Args: json (the raw string), schema (a JSON Schema object). Without payment returns the x402 challenge. Endpoint: https://guard.fabtally.com/mcp
- url_read (Public url -> clean Markdown + token count (paid $0.004)) - PAID $0.004 (x402, USDC on Base). Fetch a PUBLIC url and return clean Markdown + a token estimate for RAG ingestion — readability extraction, boilerplate stripped. Respects robots.txt, public pages only, no login/paywall bypass, nothing stored. Args: url. Without payment returns the x402 challenge; pass x_payment to settle. Endpoint: https://guard.fabtally.com/mcp

## Resources
Not captured

## Prompts
Not captured

## Metadata
- Owner: io.github.zvmzaretsky
- Version: 1.0.0
- Runtime: Streamable Http
- Transports: HTTP
- License: Not captured
- Language: Not captured
- Stars: Not captured
- Updated: Aug 1, 2026
- Source: https://registry.modelcontextprotocol.io