"CMS" matching MCP connectors:
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Free UK CIS tax refund estimates for self-employed construction subcontractors, from S+ Money (Sovereign Plus Tax Ltd, trading as S+ Money; company registration in progress). Two read-only tools: estimate_cis_refund (2025-26, 2026-27 and 2027-28 with Budget 2026 rules) and get_cis_tax_rates, with GOV.UK sources. No sign-in, nothing stored. An estimate, not tax advice.
Estimate a UK CIS construction subcontractor's tax refund for 2025-26 to 2027-28. Free, no sign-in.
Queries ArXiv for AI/CS/math papers and returns structured abstracts, authors, PDF links, and Bib.
Book Amsterdam chauffeur rides: fixed-price Schiphol transfers, custom rides and private tours.
Free SEO MCP that closes the loop: find, fix, ship as a PR or to a CMS, prove. 37 tools, no key.
Virtual phone numbers for SMS/OTP verification. Browse free; pay with credits or USDC (x402).