{"name":"io.github.zvmzaretsky/utility-belt","slug":"zvmzaretsky-utility-belt","title":"FabTally Utility Belt","description":"13 deterministic agent utilities: timezone, cron, RRULE, currency, regex, diff, hashing & more.","url":"https://mcp.market/server/zvmzaretsky-utility-belt","rating":null,"grade":"A","score":87,"certified":false,"status":"active","category":"ai","tags":["ai"],"presence":{"score":18,"stars":0,"forks":0,"downloads_week":null,"last_push_at":"2026-08-01T03:33:38.000Z","license":"MIT"},"uptime":{"percent":100,"checks":28,"ok":28,"last_checked_at":"2026-11-04T10:30:39.033Z","last_ok_at":"2026-11-04T10:30:39.033Z","latency_ms":96},"claimed":false,"transport":"remote","callable_via_gateway":true,"default_price_micros":0,"repository":"https://github.com/zvmzaretsky/fabtally-belt-mcp","website":"https://belt.fabtally.com","version":"1.0.0","remotes":[{"type":"streamable-http","url":"https://belt.fabtally.com/mcp"}],"packages":[],"tools":[{"name":"convert","description":"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.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"value":{"type":"number","description":"Numeric value to convert."},"from":{"type":"string","description":"Source unit, e.g. c, km, GiB, gal, kg."},"to":{"type":"string","description":"Target unit in the same dimension."}},"required":["value","from","to"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}},{"name":"cron","description":"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.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"expression":{"type":"string","description":"Cron expression, e.g. '0 9 * * 1-5'."},"timezone":{"type":"string","description":"IANA timezone (default UTC)."},"count":{"type":"integer","description":"How many upcoming runs (1-100, default 5)."},"from":{"type":"string","description":"Compute runs after this ISO datetime (default now)."},"x_payment":{"type":"string","description":"x402 payment payload (base64) for this PAID tool. If supplied it is forwarded as the X-PAYMENT header to settle the $0.001 call and return the real result instead of a 402 challenge. Omit to get the price challenge first."}},"required":["expression"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}},{"name":"currency","description":"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.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"amount":{"type":"number","description":"Amount in the source currency."},"from":{"type":"string","description":"Source ISO-4217 code, e.g. USD."},"to":{"type":"string","description":"Target ISO-4217 code, e.g. EUR."},"x_payment":{"type":"string","description":"x402 payment payload (base64) for this PAID tool. If supplied it is forwarded as the X-PAYMENT header to settle the $0.001 call and return the real result instead of a 402 challenge. Omit to get the price challenge first."}},"required":["amount","from","to"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}},{"name":"datemath","description":"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.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"op":{"type":"string","description":"add | subtract | diff | business-add | business-diff"},"date":{"type":"string","description":"Base date for add/subtract/business-add (ISO 8601)."},"duration":{"anyOf":[{"type":"string"},{"type":"object","additionalProperties":{}}],"description":"ISO-8601 duration string or object for add/subtract."},"from":{"type":"string","description":"Start datetime for diff/business-diff."},"to":{"type":"string","description":"End datetime for diff/business-diff."},"units":{"anyOf":[{"type":"string"},{"type":"array","items":{"type":"string"}}],"description":"diff units, e.g. ['days','hours']."},"days":{"type":"integer","description":"Business days to add (business-add; may be negative)."},"holidays":{"type":"array","items":{"type":"string"},"description":"ISO dates to skip as holidays."},"weekend":{"type":"array","items":{"type":"number"},"description":"Weekend weekdays (1=Mon..7=Sun; default [6,7])."},"timezone":{"type":"string","description":"IANA zone for parsing/rendering."},"x_payment":{"type":"string","description":"x402 payment payload (base64) for this PAID tool. If supplied it is forwarded as the X-PAYMENT header to settle the $0.001 call and return the real result instead of a 402 challenge. Omit to get the price challenge first."}},"required":["op"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}},{"name":"diff","description":"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.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"a":{"type":"string","description":"Original text."},"b":{"type":"string","description":"Changed text."},"mode":{"type":"string","description":"lines (default) | words | chars."},"context":{"type":"integer","description":"Unified-diff context lines (default 3)."},"label_a":{"type":"string"},"label_b":{"type":"string"},"x_payment":{"type":"string","description":"x402 payment payload (base64) for this PAID tool. If supplied it is forwarded as the X-PAYMENT header to settle the $0.001 call and return the real result instead of a 402 challenge. Omit to get the price challenge first."}},"required":["a","b"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}},{"name":"encode","description":"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.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"op":{"type":"string","description":"base64-encode|base64-decode|base64url-encode|base64url-decode|hex-encode|hex-decode|url-encode|url-decode|html-encode|html-decode"},"text":{"type":"string","description":"Text to encode/decode."}},"required":["op","text"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}},{"name":"hash","description":"FREE. Compute a cryptographic digest: sha256, sha512, sha384, sha1, md5, sha3-256, keccak256, ripemd160. Optional HMAC via hmac_key. Output hex (default), base64, or base64url. keccak256 also returns a 0x-form (handy for Ethereum). Args: algorithm, text (+ input_encoding utf8|hex|base64, output_encoding, hmac_key).","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"algorithm":{"type":"string","description":"sha256 | sha512 | sha384 | sha1 | md5 | sha3-256 | keccak256 | ripemd160"},"text":{"type":"string","description":"Input to hash."},"input_encoding":{"type":"string","description":"How `text` is encoded: utf8 (default) | hex | base64 | base64url."},"output_encoding":{"type":"string","description":"Digest encoding: hex (default) | base64 | base64url."},"hmac_key":{"type":"string","description":"If set, compute HMAC with this key (not for keccak256/sha3-256)."}},"required":["algorithm","text"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}},{"name":"id","description":"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.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"kind":{"type":"string","description":"uuidv4 (default) | uuidv7 | ulid | nanoid | hex | base64url | int"},"count":{"type":"integer","description":"How many to generate (1-1000, default 1)."},"size":{"type":"integer","description":"nanoid length (default 21)."},"bytes":{"type":"integer","description":"hex/base64url random byte length (default 16)."}},"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}},{"name":"jsonschema","description":"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.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"schema":{"type":"object","additionalProperties":{},"description":"A JSON Schema (draft 2020-12) object."},"data":{"description":"The value to validate against the schema."},"x_payment":{"type":"string","description":"x402 payment payload (base64) for this PAID tool. If supplied it is forwarded as the X-PAYMENT header to settle the $0.001 call and return the real result instead of a 402 challenge. Omit to get the price challenge first."}},"required":["schema"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}},{"name":"regex","description":"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).","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"pattern":{"type":"string","description":"The regular expression source (max 2000 chars)."},"input":{"type":"string","description":"The text to run it against (max 200k chars)."},"flags":{"type":"string","description":"Any of g,i,m,s,u,y."},"op":{"type":"string","description":"test | match | extract (capture groups) | replace. Default match."},"replacement":{"type":"string","description":"Replacement string for op='replace' (supports $1 etc.)."},"limit":{"type":"integer","description":"Max matches for global ops (default 1000)."}},"required":["pattern","input"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}},{"name":"rrule","description":"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.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"rrule":{"type":"string","description":"RRULE string, optionally with a DTSTART line."},"after":{"type":"string","description":"Return occurrences after this ISO datetime (default now)."},"count":{"type":"integer","description":"How many occurrences (1-366, default 5)."},"timezone":{"type":"string","description":"Render occurrences in this IANA zone."},"x_payment":{"type":"string","description":"x402 payment payload (base64) for this PAID tool. If supplied it is forwarded as the X-PAYMENT header to settle the $0.001 call and return the real result instead of a 402 challenge. Omit to get the price challenge first."}},"required":["rrule"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}},{"name":"text","description":"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).","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"op":{"type":"string","description":"slugify | template | camel | pascal | snake | kebab | constant | dot | path | title | sentence | upper | lower"},"text":{"type":"string","description":"Input text for slugify/case ops."},"template":{"type":"string","description":"Template string for op='template', with {{key}} placeholders."},"data":{"type":"object","additionalProperties":{},"description":"Object of values for op='template'."},"separator":{"type":"string","description":"Slug separator (default '-')."},"strict":{"type":"boolean","description":"template: throw on missing keys."}},"required":["op"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}},{"name":"timezone","description":"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.","write_action":false,"price_micros":0,"input_schema":{"type":"object","properties":{"datetime":{"type":["string","number"],"description":"Instant to convert: ISO 8601 (e.g. 2021-03-14T01:30:00) or epoch seconds/millis."},"from_zone":{"type":"string","description":"Source IANA zone (default UTC), e.g. America/New_York."},"to_zone":{"type":"string","description":"Target IANA zone, e.g. Europe/London, Asia/Tokyo."},"x_payment":{"type":"string","description":"x402 payment payload (base64) for this PAID tool. If supplied it is forwarded as the X-PAYMENT header to settle the $0.001 call and return the real result instead of a 402 challenge. Omit to get the price challenge first."}},"required":["datetime","to_zone"],"additionalProperties":false,"$schema":"http://json-schema.org/draft-07/schema#"}}],"scan":{"score":87,"grade":"A","scanned_at":"2026-09-24T12:02:39.807Z","report":{"scannerVersion":"0.1.9","scannedAt":"2026-09-24T12:02:39.837Z","components":{"code":{"score":-1,"max":25,"notes":["remote-only server, no package to scan"]},"reliability":{"score":20,"max":20,"notes":["remote reachable in 1059ms"]},"poisoning":{"score":15,"max":15,"notes":["13 tool descriptions checked"]},"auth":{"score":10,"max":15,"notes":["open endpoint, read-only tools"]},"maintenance":{"score":12,"max":15,"notes":["last push 54 days ago"]},"identity":{"score":8,"max":10,"notes":["registry namespace matches repository owner","GitHub account older than a year"]}},"findings":[],"inputs":{"probes":[{"url":"https://belt.fabtally.com/mcp","reachable":true,"authRequired":false,"latencyMs":1059,"serverInfo":{"name":"fabtally-belt","version":"1.0.0"}}],"packages":[],"repo":{"found":true,"owner":"zvmzaretsky","repo":"fabtally-belt-mcp","archived":false,"pushedAt":"2026-08-01T03:33:38Z","stars":0,"forks":0,"openIssues":0,"ownerType":"User","ownerAvatarUrl":"https://avatars.githubusercontent.com/u/70215062?v=4","ownerCreatedAt":"2020-08-25T14:39:27Z","license":"MIT"},"icon":{"url":"https://avatars.githubusercontent.com/u/70215062?v=4&s=128","source":"github"},"presence":{"stars":0,"forks":0,"downloadsWeek":null,"license":"MIT","lastPushAt":"2026-08-01T03:33:38.000Z","score":18}}}},"grade_history":[],"reviews":[]}