{"server":"dev.plumbkit/plumbkit","count":16,"tools":[{"name":"business_days","title":"Business day calculator","description":"Works with business (working) days. mode \"add\": returns the date N business days after start_date (start_date itself is not counted; negative N goes backward; 0 returns start_date, or the next business day if start_date is not one). mode \"count\": counts business days from start_date to end_date, including both ends. Weekends default to Saturday and Sunday. Public holidays are NOT built in — pass them in \"holidays\".","input_schema":{"type":"object","required":["mode","start_date"],"properties":{"days":{"type":"integer","maximum":10000,"minimum":-10000,"description":"Business days to add (mode \"add\")"},"mode":{"enum":["add","count"],"type":"string","description":"\"add\" or \"count\""},"weekend":{"type":"array","items":{"type":"integer","maximum":7,"minimum":1},"maxItems":6,"description":"Weekend days as ISO weekday numbers (1=Monday ... 7=Sunday). Default [6, 7]. Example for Friday-Saturday weekends: [5, 6]"},"end_date":{"type":"string","pattern":"^\\d{4}-\\d{2}-\\d{2}$","description":"YYYY-MM-DD (mode \"count\")"},"holidays":{"type":"array","items":{"type":"string","pattern":"^\\d{4}-\\d{2}-\\d{2}$"},"maxItems":1000,"description":"Dates (YYYY-MM-DD) to treat as non-working days"},"start_date":{"type":"string","pattern":"^\\d{4}-\\d{2}-\\d{2}$","description":"YYYY-MM-DD"}},"additionalProperties":false},"output_schema":null,"annotations":{"title":"Business day calculator","readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T22:53:33.785Z"},{"name":"calculate","title":"Exact calculator","description":"Evaluates an arithmetic expression exactly, so you don't have to do mental math. Supports + - * / % ^ (or **), parentheses, constants pi/e/tau and functions: sqrt, cbrt, abs, round(x, digits), floor, ceil, trunc, sign, ln, log(x[, base]), log10, log2, exp, pow, sin, cos, tan, asin, acos, atan, atan2, min, max, hypot, factorial. Trig uses radians. Example: \"(1250 * 1.08^5) - 1250\".","input_schema":{"type":"object","required":["expression"],"properties":{"decimals":{"type":"integer","maximum":15,"minimum":0,"description":"Optional: round the result to this many decimal places"},"expression":{"type":"string","maxLength":2000,"minLength":1,"description":"The expression to evaluate"}},"additionalProperties":false},"output_schema":null,"annotations":{"title":"Exact calculator","readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T22:53:33.785Z"},{"name":"convert_timezone","title":"Convert time zones","description":"Converts a date/time from one time zone to another, correctly handling daylight saving time. If the input already includes an offset or 'Z', from_timezone is ignored.","input_schema":{"type":"object","required":["datetime","to_timezone"],"properties":{"datetime":{"type":"string","maxLength":64,"description":"Date/time in ISO 8601 (e.g. \"2026-03-08T14:30\", \"2026-03-08T14:30:00Z\", \"2026-03-08\"), \"YYYY-MM-DD HH:mm\", a Unix timestamp in seconds or milliseconds, or \"now\"."},"to_timezone":{"type":"string","maxLength":64,"description":"IANA time zone name, e.g. \"America/New_York\", \"Europe/London\", \"Asia/Tokyo\", or \"UTC\". Fixed offsets like \"UTC+5:30\" also work."},"from_timezone":{"type":"string","maxLength":64,"description":"IANA time zone name, e.g. \"America/New_York\", \"Europe/London\", \"Asia/Tokyo\", or \"UTC\". Fixed offsets like \"UTC+5:30\" also work. Defaults to UTC."}},"additionalProperties":false},"output_schema":null,"annotations":{"title":"Convert time zones","readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T22:53:33.785Z"},{"name":"convert_units","title":"Unit converter","description":"Converts a value between units of length, mass, volume (US and imperial), area, speed, time, digital data (KB vs KiB, bits vs bytes), energy, pressure and temperature. Accepts common abbreviations (km, lb, fl oz, mph, °F, GiB). US customary units are used for cup/pint/quart/gallon unless you say imperial.","input_schema":{"type":"object","required":["value","from","to"],"properties":{"to":{"type":"string","maxLength":40,"description":"Unit to convert to, e.g. \"km\", \"kg\", \"celsius\", \"GiB\""},"from":{"type":"string","maxLength":40,"description":"Unit to convert from, e.g. \"mi\", \"pound\", \"°F\", \"GB\""},"value":{"type":"number","description":"The number to convert"}},"additionalProperties":false},"output_schema":null,"annotations":{"title":"Unit converter","readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T22:53:33.785Z"},{"name":"current_time","title":"Current date and time","description":"Returns the exact current date, time, weekday and UTC offset in any time zone. Use this whenever you need to know today's date or the current time instead of guessing — your training data does not know what day it is.","input_schema":{"type":"object","properties":{"timezone":{"type":"string","default":"UTC","maxLength":64,"description":"IANA time zone name, e.g. \"America/New_York\", \"Europe/London\", \"Asia/Tokyo\", or \"UTC\". Fixed offsets like \"UTC+5:30\" also work."}},"additionalProperties":false},"output_schema":null,"annotations":{"title":"Current date and time","readOnlyHint":true,"openWorldHint":false,"idempotentHint":false,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T22:53:33.785Z"},{"name":"date_add","title":"Add or subtract time","description":"Adds or subtracts a duration (years, months, weeks, days, hours, minutes, seconds) to a date/time. Use negative numbers to subtract. Calendar-aware: adding 1 month to Jan 31 gives Feb 28/29, and adding days keeps the same local clock time across daylight-saving changes.","input_schema":{"type":"object","required":["datetime"],"properties":{"days":{"type":"number","maximum":10000000,"minimum":-10000000,"description":"days to add (negative to subtract)"},"hours":{"type":"number","maximum":10000000,"minimum":-10000000,"description":"hours to add (negative to subtract)"},"weeks":{"type":"number","maximum":10000000,"minimum":-10000000,"description":"weeks to add (negative to subtract)"},"years":{"type":"number","maximum":10000000,"minimum":-10000000,"description":"years to add (negative to subtract)"},"months":{"type":"number","maximum":10000000,"minimum":-10000000,"description":"months to add (negative to subtract)"},"minutes":{"type":"number","maximum":10000000,"minimum":-10000000,"description":"minutes to add (negative to subtract)"},"seconds":{"type":"number","maximum":10000000,"minimum":-10000000,"description":"seconds to add (negative to subtract)"},"datetime":{"type":"string","maxLength":64,"description":"Date/time in ISO 8601 (e.g. \"2026-03-08T14:30\", \"2026-03-08T14:30:00Z\", \"2026-03-08\"), \"YYYY-MM-DD HH:mm\", a Unix timestamp in seconds or milliseconds, or \"now\"."},"timezone":{"type":"string","maxLength":64,"description":"Time zone the arithmetic happens in. IANA time zone name, e.g. \"America/New_York\", \"Europe/London\", \"Asia/Tokyo\", or \"UTC\". Fixed offsets like \"UTC+5:30\" also work. Defaults to UTC."}},"additionalProperties":false},"output_schema":null,"annotations":{"title":"Add or subtract time","readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T22:53:33.785Z"},{"name":"date_diff","title":"Time between two dates","description":"Calculates the exact time between two dates/times: a calendar breakdown (years, months, days, hours, minutes, seconds) plus totals in days, hours, minutes and seconds, and the number of calendar days. Negative if end is before start.","input_schema":{"type":"object","required":["start","end"],"properties":{"end":{"type":"string","maxLength":64,"description":"Date/time in ISO 8601 (e.g. \"2026-03-08T14:30\", \"2026-03-08T14:30:00Z\", \"2026-03-08\"), \"YYYY-MM-DD HH:mm\", a Unix timestamp in seconds or milliseconds, or \"now\"."},"start":{"type":"string","maxLength":64,"description":"Date/time in ISO 8601 (e.g. \"2026-03-08T14:30\", \"2026-03-08T14:30:00Z\", \"2026-03-08\"), \"YYYY-MM-DD HH:mm\", a Unix timestamp in seconds or milliseconds, or \"now\"."},"timezone":{"type":"string","maxLength":64,"description":"Time zone for inputs without an offset. IANA time zone name, e.g. \"America/New_York\", \"Europe/London\", \"Asia/Tokyo\", or \"UTC\". Fixed offsets like \"UTC+5:30\" also work. Defaults to UTC."}},"additionalProperties":false},"output_schema":null,"annotations":{"title":"Time between two dates","readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T22:53:33.785Z"},{"name":"hash_text","title":"Hash and encode text","description":"Computes a cryptographic hash (SHA-1, SHA-256, SHA-384, SHA-512) of text, or encodes/decodes it as Base64, Base64URL, hex or URL-encoding. Text is treated as UTF-8.","input_schema":{"type":"object","required":["text","operation"],"properties":{"text":{"type":"string","maxLength":200000},"operation":{"enum":["sha1","sha256","sha384","sha512","base64_encode","base64_decode","base64url_encode","base64url_decode","hex_encode","hex_decode","url_encode","url_decode"],"type":"string"}},"additionalProperties":false},"output_schema":null,"annotations":{"title":"Hash and encode text","readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T22:53:33.785Z"},{"name":"json_repair","title":"Fix broken JSON","description":"Turns almost-JSON into valid JSON: removes markdown code fences, comments and trailing commas, adds missing quotes, commas and closing brackets, converts single quotes, Python True/False/None and truncated output. Returns the repaired JSON string and whether the input was already valid.","input_schema":{"type":"object","required":["text"],"properties":{"text":{"type":"string","maxLength":500000,"minLength":1,"description":"The broken JSON text"},"pretty":{"type":"boolean","description":"Indent the output. Default false."}},"additionalProperties":false},"output_schema":null,"annotations":{"title":"Fix broken JSON","readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T22:53:33.785Z"},{"name":"json_schema_validate","title":"Validate JSON against a schema","description":"Checks a JSON value against a JSON Schema (drafts 4, 7, 2019-09 and 2020-12) and lists every violation with its location. Use it to confirm structured output or an API payload is correct before sending it. `data` and `schema` may be JSON values or JSON strings.","input_schema":{"type":"object","required":["data","schema"],"properties":{"data":{"description":"The JSON value to check (any type), or a JSON string of it"},"draft":{"enum":["4","7","2019-09","2020-12"],"type":"string","description":"Default 2020-12"},"schema":{"description":"The JSON Schema (object), or a JSON string of it"}},"additionalProperties":false},"output_schema":null,"annotations":{"title":"Validate JSON against a schema","readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T22:53:33.785Z"},{"name":"regex_test","title":"Test a regular expression","description":"Runs a JavaScript regular expression against text and returns every match with its position and capture groups, or the text after replacement. Use it to verify a regex actually works before relying on it.","input_schema":{"type":"object","required":["pattern","text"],"properties":{"text":{"type":"string","maxLength":50000},"flags":{"type":"string","pattern":"^[imsuy]*$","maxLength":6,"description":"Optional flags: i (ignore case), m (multiline), s (dotall), u (unicode), y (sticky). Global matching is always on."},"pattern":{"type":"string","maxLength":1000,"minLength":1,"description":"Regex pattern without slashes, e.g. \"(\\\\d{3})-(\\\\d{4})\""},"max_matches":{"type":"integer","maximum":1000,"minimum":1,"description":"Default 100"},"replace_with":{"type":"string","maxLength":1000,"description":"Optional replacement string ($1, $<name> supported). If set, returns the replaced text too."}},"additionalProperties":false},"output_schema":null,"annotations":{"title":"Test a regular expression","readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T22:53:33.785Z"},{"name":"text_stats","title":"Count characters, words and lines","description":"Counts exactly what language models are bad at counting: characters (as humans see them), words, lines, sentences, paragraphs, UTF-8 bytes, and occurrences of a letter or substring (e.g. how many \"r\" in \"strawberry\"). Use it to check length limits (tweets, SMS, meta descriptions, form fields) before submitting text.","input_schema":{"type":"object","required":["text"],"properties":{"text":{"type":"string","maxLength":200000,"description":"The text to analyze"},"count":{"type":"string","maxLength":1000,"description":"Optional letter, word or substring to count occurrences of"},"overlapping":{"type":"boolean","description":"For `count`: count overlapping matches (\"aa\" in \"aaa\" = 2). Default false."},"case_sensitive":{"type":"boolean","description":"For `count`. Default false."}},"additionalProperties":false},"output_schema":null,"annotations":{"title":"Count characters, words and lines","readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T22:53:33.785Z"},{"name":"validate_email","title":"Validate an email address","description":"Checks whether an email address is correctly formatted and returns a normalized version. Set check_dns=true to also confirm the domain exists and can receive mail (MX records). Does not send email and cannot confirm that a specific mailbox exists.","input_schema":{"type":"object","required":["email"],"properties":{"email":{"type":"string","maxLength":512},"check_dns":{"type":"boolean","description":"Also look up the domain's mail servers. Default false."}},"additionalProperties":false},"output_schema":null,"annotations":{"title":"Validate an email address","readOnlyHint":true,"openWorldHint":true,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T22:53:33.785Z"},{"name":"validate_iban","title":"Validate an IBAN","description":"Validates an International Bank Account Number: country, length for that country, and the mod-97 check digits. Returns electronic and printed formats. A valid IBAN is correctly formed; this does not confirm the account exists.","input_schema":{"type":"object","required":["iban"],"properties":{"iban":{"type":"string","maxLength":64}},"additionalProperties":false},"output_schema":null,"annotations":{"title":"Validate an IBAN","readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T22:53:33.785Z"},{"name":"validate_phone","title":"Validate and format a phone number","description":"Validates a phone number using Google's libphonenumber rules and returns it in E.164 (+14155552671), international and national formats, plus the country and line type (mobile, fixed line, toll free...). For numbers without a +country code, pass default_country.","input_schema":{"type":"object","required":["phone"],"properties":{"phone":{"type":"string","maxLength":64},"default_country":{"type":"string","pattern":"^[A-Za-z]{2}$","description":"Two-letter country code used when the number has no \"+\" prefix, e.g. \"US\", \"GB\", \"DE\""}},"additionalProperties":false},"output_schema":null,"annotations":{"title":"Validate and format a phone number","readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T22:53:33.785Z"},{"name":"validate_url","title":"Validate and normalize a URL","description":"Checks that a URL is well-formed, normalizes it (lowercase host, punycode, default ports removed, spaces encoded) and splits it into parts including each query parameter. Flags common problems such as missing scheme, private/localhost addresses and credentials embedded in the URL. Does not fetch the URL.","input_schema":{"type":"object","required":["url"],"properties":{"url":{"type":"string","maxLength":8192},"require_https":{"type":"boolean","description":"Treat http:// as invalid. Default false."}},"additionalProperties":false},"output_schema":null,"annotations":{"title":"Validate and normalize a URL","readOnlyHint":true,"openWorldHint":false,"idempotentHint":true,"destructiveHint":false},"source":"probe","observed_at":"2026-10-19T22:53:33.785Z"}],"next_cursor":null,"next_actions":[{"action":"get_connection","description":"Connection block to call these tools","href":"/v1/servers/dev.plumbkit%2Fplumbkit/connection?target=mcpServers","arguments":{"name":"dev.plumbkit/plumbkit","target":"mcpServers"}},{"action":"get_server","description":"Full descriptor with trust and connectability","href":"/v1/servers/dev.plumbkit%2Fplumbkit","arguments":{"name":"dev.plumbkit/plumbkit"}}]}