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FabTally Guard

R0· no sign-in

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

v1.0.0 · active · repository · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality79good
Trust94of 100
Uptime, 30 days100%
Latency p50389 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "fabtally-guard": {
      "type": "http",
      "url": "https://guard.fabtally.com/mcp"
    }
  }
}
claude mcp add --transport http fabtally-guard https://guard.fabtally.com/mcp
[mcp_servers.fabtally-guard]
url = "https://guard.fabtally.com/mcp"
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "fabtally-guard": {
      "type": "remote",
      "url": "https://guard.fabtally.com/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "fabtally-guard": {
      "type": "http",
      "url": "https://guard.fabtally.com/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=fabtally-guard&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vZ3VhcmQuZmFidGFsbHkuY29tL21jcCJ9"
}
{
  "servers": {
    "fabtally-guard": {
      "type": "http",
      "url": "https://guard.fabtally.com/mcp"
    }
  }
}
{
  "mcpServers": {
    "fabtally-guard": {
      "httpUrl": "https://guard.fabtally.com/mcp"
    }
  }
}
extensions:
  "fabtally-guard":
    enabled: true
    name: "fabtally-guard"
    type: streamable_http
    uri: "https://guard.fabtally.com/mcp"
    timeout: 300

Quality 79 / 100good

protocol75 · weight 25
  • warn
    protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
  • n/a
    protocol.statelessonly applies to 2026-07-28 servers
  • pass
    protocol.transportstreamable HTTP
  • n/a
    protocol.list_ttlonly applies to 2026-07-28 servers
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene71 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • pass
    tools.description_lengthdescriptions are concise
  • pass
    tools.schemasevery tool has an object input schema
  • fail
    tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
  • fail
    tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: url_read (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); deps_check (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); x402_preflight (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
  • pass
    tools.token_costabout 998 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability100 · weight 15
  • pass
    stability.changesno tool changes in 30 days
  • pass
    stability.rug_pullno tool changed its meaning under the same name
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

4 tools, about 998 tokens to load them all · tool set 3b9e41726edb · checked 2026-10-20 10:03 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 94 / 100

provenance90
liveness100
freshness85
hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-100% ~updated-80d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://guard.fabtally.com/mcp streamable-httpnoneyes100%389 ms2025-11-252026-10-20

Tools (4)

deps_checkPAID $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.
json_repairPAID $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.
url_readPAID $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.
x402_preflightPAID $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.

Schemas: list_tools.

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Official server.json
{
  "name": "io.github.zvmzaretsky/fabtally-guard",
  "title": "FabTally Guard",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://guard.fabtally.com/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.0",
  "repository": {
    "url": "https://github.com/zvmzaretsky/fabtally-guard-mcp",
    "source": "github"
  },
  "websiteUrl": "https://guard.fabtally.com",
  "description": "Verify before you act: deps-check, x402-preflight, json-repair & url-read for agents."
}