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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "utility-belt": {
      "type": "http",
      "url": "https://belt.fabtally.com/mcp"
    }
  }
}

claude mcp add --transport http utility-belt https://belt.fabtally.com/mcp

[mcp_servers.utility-belt]
url = "https://belt.fabtally.com/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "utility-belt": {
      "type": "remote",
      "url": "https://belt.fabtally.com/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "utility-belt": {
      "type": "http",
      "url": "https://belt.fabtally.com/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=utility-belt&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYmVsdC5mYWJ0YWxseS5jb20vbWNwIn0%3D"
}

{
  "servers": {
    "utility-belt": {
      "type": "http",
      "url": "https://belt.fabtally.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "utility-belt": {
      "httpUrl": "https://belt.fabtally.com/mcp"
    }
  }
}

extensions:
  "utility-belt":
    enabled: true
    name: "utility-belt"
    type: streamable_http
    uri: "https://belt.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: datemath (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); cron (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); rrule (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
pass
tools.token_costabout 3,173 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

13 tools, about 3,173 tokens to load them all · tool set 5a962a604c3c · checked 2026-10-19 10:20 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-79d-ago

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

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://belt.fabtally.com/mcp` streamable-http	none	yes	100%	391 ms	2025-11-25	2026-10-19

Tools (13)

`convert`	FREE. Convert a value between units in the same dimension: length, mass, temperature, volume, data, time, area, speed, angle, pressure, energy. Deterministic. Args: value (number), from (unit), to (unit). e.g. {value:100, from:'c', to:'f'} or {value:1, from:'GiB', to:'MB'}. Different-dimension conversions 400.
`cron`	PAID $0.001. Parse a 5- or 6-field cron expression and return the next N run times plus a plain-English description. Args: expression, timezone (IANA, default UTC), count (default 5), from (ISO, optional). Without payment returns the x402 challenge; pass x_payment to settle.
`currency`	PAID $0.001. Convert an amount between currencies at reference/mid-market rates from a keyless public central-bank feed (ECB), cached. Informational, not a dealable quote. Args: amount, from, to (ISO-4217, e.g. USD, EUR, JPY). Without payment returns the x402 challenge; pass x_payment to settle.
`datemath`	PAID $0.001. Calendar date math. op='add'/'subtract' an ISO-8601 duration (P1Y2M10DT2H30M) to a date; op='diff' two datetimes into chosen units; op='business-add' add business days (configurable weekend + holidays); op='business-diff' count business days between two dates. Without payment returns the x402 challenge; pass x_payment to settle.
`diff`	PAID $0.001. Diff two texts: a unified patch, a structured op-list (add/remove/equal), and add/remove/hunk stats. Args: a, b, mode (lines\|words\|chars, default lines), context (default 3), label_a, label_b. Without payment returns the x402 challenge; pass x_payment to settle.
`encode`	FREE. Encode or decode text. op is one of base64-encode\|base64-decode\|base64url-encode\|base64url-decode\|hex-encode\|hex-decode\|url-encode\|url-decode\|html-encode\|html-decode. Args: op, text.
`hash`	FREE. Compute a cryptographic digest: sha256, sha512, sha384, sha1, md5, sha3-256, keccak256, ripemd160. Optional HMAC via hmac_key. Output hex (default), base64, or base64url. keccak256 also returns a 0x-form (handy for Ethereum). Args: algorithm, text (+ input_encoding utf8\|hex\|base64, output_encoding, hmac_key).
`id`	FREE. Generate identifiers. kind is one of uuidv4\|uuidv7\|ulid\|nanoid\|hex\|base64url\|int. count up to 1000. nanoid takes `size`; hex/base64url take `bytes`. Uses a CSPRNG. Args: kind, count.
`jsonschema`	PAID $0.001. Validate a value against a JSON Schema (draft 2020-12) and explain every error in plain English (which property, what was wrong, allowed values). Args: schema (object), data (any). Without payment returns the x402 challenge; pass x_payment to settle.
`regex`	FREE. Run a regular expression against input with catastrophic-backtracking protection (it runs in a killable worker with a hard timeout, so a pathological pattern returns a 400 instead of hanging). op is test\|match\|extract\|replace. Args: pattern, input, flags (gimsuy), op, replacement (for replace).
`rrule`	PAID $0.001. Expand an iCal RRULE (RFC 5545) recurrence into its next N occurrences. Args: rrule (e.g. 'FREQ=WEEKLY;BYDAY=MO,WE;COUNT=10'), after (ISO, default now), count (default 5), timezone. Tip: include DTSTART for anchored series. Without payment returns the x402 challenge; pass x_payment.
`text`	FREE. Text transforms. op='slugify' -> URL slug; op is one of camel\|pascal\|snake\|kebab\|constant\|dot\|path\|title\|sentence\|upper\|lower for case conversion; op='template' fills {{placeholders}} from `data`. Args: op, text (for slugify/case), or template + data (for template).
`timezone`	PAID $0.001 (x402, USDC on Base). Convert an instant between IANA time zones with historically-correct DST. Returns converted datetime, UTC offsets, tz abbreviations, DST flags, and the offset difference. Args: datetime (ISO 8601 or epoch), from_zone, to_zone. Without payment returns the x402 challenge; pass x_payment to settle. Free teaser exists on the HTTP API at /v1/timezone/free.

Schemas: list_tools.

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More from io.github.zvmzaretsky

Official server.json

{
  "name": "io.github.zvmzaretsky/utility-belt",
  "title": "FabTally Utility Belt",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://belt.fabtally.com/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.0",
  "repository": {
    "url": "https://github.com/zvmzaretsky/fabtally-belt-mcp",
    "source": "github"
  },
  "websiteUrl": "https://belt.fabtally.com",
  "description": "13 deterministic agent utilities: timezone, cron, RRULE, currency, regex, diff, hashing & more."
}