Cuelark Tools

com.cuelark/toolsVersion 1.1.0

Exact tools for agents: US tax, routing/EIN checks, business days, JSON, links, packages, citations.

Status

Responds725 msNov 14, 2026, 13:53 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 13:53 UTC
Latency: 725 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 21:12 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://tools.cuelark.com/mcpResponds725 msNov 14, 2026, 13:53 UTC

No sign-in

Claude Code

claude mcp add --transport http tools https://tools.cuelark.com/mcp

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: tools
Remote MCP server URL: https://tools.cuelark.com/mcp

Cursor

{
  "mcpServers": {
    "tools": {
      "url": "https://tools.cuelark.com/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"tools","type":"http","url":"https://tools.cuelark.com/mcp"}'

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Tools

15 tools

Tools of Cuelark Tools
	Description		Read-only	Idempotent	Open world
`calculate`Exact decimal arithmetic for an expression (no floating-point drift: 0.1+0.2 = 0.3; + − × ÷ ^ %, sqrt, ln, log, round, min, max, pi), summary statistics for a list of numbers, rounding with a chosen mode, and adult BMI from lb/in or kg/cm.	Exact decimal arithmetic for an expression (no floating-point drift: 0.1+0.2 = 0.3; + − × ÷ ^ %, sqrt, ln, log, round, min, max, pi), summary statistics for a list of numbers, rounding with a chosen mode, and adult BMI from lb/in or kg/cm.	No	Yes	Yes	No
`convert`Unit conversion (imperial and metric: length, weight, volume, area, speed, temperature, data, pressure, energy), color hex/rgb/hsl, WCAG contrast ratio, numbers in words and $ or lakh/crore formats, Markdown to HTML, pixels vs print size at a DPI, and CGPA to percentage (official formulas).	Unit conversion (imperial and metric: length, weight, volume, area, speed, temperature, data, pressure, energy), color hex/rgb/hsl, WCAG contrast ratio, numbers in words and $ or lakh/crore formats, Markdown to HTML, pixels vs print size at a DPI, and CGPA to percentage (official formulas).	No	Yes	Yes	No
`dates`Calendar math: days between dates, add days/weeks/months/years, exact age (with exam cut-offs), business days skipping public holidays (US federal by default; UK, EU, CA, AU, IN, SG, AE), a country's holiday list, and cron schedules in plain English.	Calendar math: days between dates, add days/weeks/months/years, exact age (with exam cut-offs), business days skipping public holidays (US federal by default; UK, EU, CA, AU, IN, SG, AE), a country's holiday list, and cron schedules in plain English.	No	Yes	Yes	No
`encode`Base64 and URL encode/decode (UTF-8 safe), MD5/SHA-1/SHA-256/384/512 hashes, new UUID v4/v7 or ULID (or read a ULID's time), and decode a JWT's header and payload without verifying it.	Base64 and URL encode/decode (UTF-8 safe), MD5/SHA-1/SHA-256/384/512 hashes, new UUID v4/v7 or ULID (or read a ULID's time), and decode a JWT's header and payload without verifying it.	No	Yes	Yes	No
`finance`Monthly loan payment (EMI) with a yearly amortization summary, simple and compound interest (with monthly contributions), percentage math (of, what percent, change, add, subtract), and tax added to or removed from a price at a given rate (VAT, sales tax, or India GST with CGST/SGST/IGST split).	Monthly loan payment (EMI) with a yearly amortization summary, simple and compound interest (with monthly contributions), percentage math (of, what percent, change, add, subtract), and tax added to or removed from a price at a given rate (VAT, sales tax, or India GST with CGST/SGST/IGST split).	No	Yes	Yes	No
`ifsc_lookup`Bank, branch, address, MICR and NEFT/RTGS/IMPS/UPI support for an Indian IFSC code, from RBI's published lists via Razorpay's IFSC dataset.	Bank, branch, address, MICR and NEFT/RTGS/IMPS/UPI support for an Indian IFSC code, from RBI's published lists via Razorpay's IFSC dataset.	No	Yes	Yes	Yes
`income_tax`Estimate income tax from official tables. us_federal: 2025 or 2026 IRS brackets, standard deduction (with 65+/blind extras) or itemized, by filing status. india: FY 2025-26 or 2026-27, new vs old regime with 87A rebate, surcharge and cess. Each answer cites its source.	Estimate income tax from official tables. us_federal: 2025 or 2026 IRS brackets, standard deduction (with 65+/blind extras) or itemized, by filing status. india: FY 2025-26 or 2026-27, new vs old regime with 87A rebate, surcharge and cess. Each answer cites its source.	No	Yes	Yes	No
`json`Validate and pretty-print or minify JSON (errors give line and column), or convert JSON to YAML or CSV, or CSV to JSON.	Validate and pretty-print or minify JSON (errors give line and column), or convert JSON to YAML or CSV, or CSV to JSON.	No	Yes	Yes	No
`package_check`Does this package exist (catches invented names)? Latest version, deprecation, license, repository, last publish, downloads, and the newest version matching a range. Ecosystems: npm, pypi, crates.	Does this package exist (catches invented names)? Latest version, deprecation, license, repository, last publish, downloads, and the newest version matching a range. Ecosystems: npm, pypi, crates.	No	Yes	Yes	Yes
`text`Exact text facts models get wrong: word/character/grapheme counts, whether text fits X, SMS, meta title/description or custom:N limits (with a truncated version), letter frequency, case conversion, slugs, JavaScript regex matches and replacements, lorem ipsum, and OpenAI token counts.	Exact text facts models get wrong: word/character/grapheme counts, whether text fits X, SMS, meta title/description or custom:N limits (with a truncated version), letter frequency, case conversion, slugs, JavaScript regex matches and replacements, lorem ipsum, and OpenAI token counts.	No	Yes	Yes	No
`time`Current time anywhere (with DST state and next clock change), convert a wall-clock time between zones, or convert Unix timestamps to and from dates. Accepts IANA zones or common names (ET, PT, UTC, London, IST).	Current time anywhere (with DST state and next clock change), convert a wall-clock time between zones, or convert Unix timestamps to and from dates. Accepts IANA zones or common names (ET, PT, UTC, London, IST).	No	Yes	Yes	No
`ui_component_lookup`Search the ui.cuelark.com shadcn/ui registry (React components, blocks, themes) and get the shadcn CLI install command for each match.	Search the ui.cuelark.com shadcn/ui registry (React components, blocks, themes) and get the shadcn CLI install command for each match.	No	Yes	Yes	Yes
`validate`Check an identifier's format and check digit: US ABA routing number, EIN, SSN (format rules only), ZIP; card numbers (Luhn) and IBAN; India GSTIN, PAN, IFSC, UPI ID, Aadhaar (Verhoeff) and PIN code. Proves a value is well formed, not that it's registered. Nothing is stored.	Check an identifier's format and check digit: US ABA routing number, EIN, SSN (format rules only), ZIP; card numbers (Luhn) and IBAN; India GSTIN, PAN, IFSC, UPI ID, Aadhaar (Verhoeff) and PIN code. Proves a value is well formed, not that it's registered. Nothing is stored.	No	Yes	Yes	No
`verify_citation`Check that a paper exists and get its canonical metadata (title, authors, year, venue, DOI link, retraction flag) by DOI, arXiv id, or title plus author. Uses Crossref, OpenAlex and arXiv. No abstracts.	Check that a paper exists and get its canonical metadata (title, authors, year, venue, DOI link, retraction flag) by DOI, arXiv id, or title plus author. Uses Crossref, OpenAlex and arXiv. No abstracts.	No	Yes	Yes	Yes
`verify_links`Check up to 20 URLs live: HTTP status, redirects, final URL, page title and canonical, and optionally whether each page contains a quote. Respects robots.txt and refuses private addresses.	Check up to 20 URLs live: HTTP status, redirects, final URL, page title and canonical, and optionally whether each page contains a quote. Respects robots.txt and refuses private addresses.	No	Yes	Yes	Yes

Details

Registry status: Active
Published: Nov 10, 2026
Updated: Nov 10, 2026
Website: https://tools.cuelark.com/mcp⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): Finance and paymentsSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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