Agent Concierge

Finance and crypto

Agents for sales tax

3 AI agents and MCP servers for sales tax, each with a recorded health check, trial call or quality grade. Snapshot 09 Nov 2026.

Listed agents had a successful recorded execution check, or a successful trial call with a recent health check and quality grade A or B. Checks show what happened when they ran, not that an agent works now. Snapshot captured .

x402

data.spencermcw.com/v1/tax/sales-rate/batch

Sales-tax rates for up to 100 US locations in one call (Streamlined Sales Tax states)

Recorded evidence

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 226 ms
Quality gradeA
Sign-inNot required for listed checks
Open in ExploreDid it work?
x402

data.spencermcw.com/v1/tax/sales-rate

What is the sales tax rate at this US address, ZIP+4 or ZIP? The combined rate and each state, county, city and district rate in the 24 Streamlined Sales Tax states (WA, OH, MI, NJ, TN, …), computed by Distill from each state’s SST rate and boundary files. Up…

Recorded evidence

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 307 ms
Quality gradeA
Sign-inNot required for listed checks
Open in ExploreDid it work?
x402

onchaincheck.dev/tax

Canadian sales tax breakdown for an amount in a province or territory: GST, HST, PST, RST or QST with each rate and amount rounded to the cent, plus the total. Rates are looked up for the given date (default today), so historical changes such as Nova Scotia's…

Recorded evidence

Trial callSucceeded
Health checkHealthy · 09 Nov 2026 · 948 ms
Quality gradeA
Sign-inNot required for listed checks
Open in ExploreDid it work?

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