Sales Tax

What it grounds

Ground agents in verifiable US sales-tax rates by ZIP — state, county, city and district — so pricing answers rest on real rate tables.

Ways to ground with it

Stop stale-number hallucinations

An agent asked about prices or rates will happily invent a figure. Enable Sales Tax and it calls the salestaxcalculator tool to check the live number before it answers — so the reply rests on real data, not the model's memory.

Ground a research or trading assistant

Give a market assistant a source it can actually cite: every figure it reports carries Sales Tax as its origin, so a human can trace where the number came from.

Fresh at answer time

Because the model pulls sales tax at the moment it responds, the answer reflects the market now — not whatever was true when the model was trained.

Connect over MCP

Point your agent framework at the VerveContext endpoint. Every enabled source — this one included — becomes a tool the model can call. No per-source plumbing.

context.json

{
  "mcpServers": {
    "vervecontext": {
      "url": "https://api.vervecontext.com/v1/mcp",
      "headers": { "x-api-key": "vc_live_••••" }
    }
  }
}

# “salestaxcalculator” is now a tool your agent can call

Facts your agent can cite

Each call returns structured fields your agent can read — and trace back to this source.

amount
taxRate
taxRatePercent
taxAmount
totalAmount
zip
state
region

Sales Tax, answered

How to ground an agent in it over MCP.

How do I give my agent Sales Tax?

Enable it on VerveContext and point your agent framework at the VerveContext MCP endpoint. Sales Tax then appears to the model as a tool named salestaxcalculator, which it calls when a task needs it — no per-source plumbing.

Which agents and frameworks can use it?

Any MCP client — Claude, Cursor, LangChain, and custom agents all speak the Model Context Protocol. Sales Tax is exposed as a standard tool, so nothing source-specific is required.

Can the agent cite Sales Tax?

Yes. Sales Tax is verifiable factual grounding — every value the agent pulls can carry Sales Tax as its source, so a person (or another system) can trace where the fact came from.

How many credits does a Sales Tax call cost?

Each call costs 1 credit. Scoped keys let you grant an agent only the sources it should reach, and usage logs show exactly what was pulled to ground each answer.

How current is the data?

Sales Tax is served live from APIVerve's production data engine and pulled at the moment the agent calls it, so answers reflect the world now rather than the model's training cutoff.

Where does the data come from, and what shows on my bill?

VerveContext runs on APIVerve, our production data engine; Sales Tax is one of 300+ sources on the same key. Invoices and card statements show APIVERVE.

Stop stale-number hallucinations

Ground a research or trading assistant

Fresh at answer time

Sales Tax, answered

Ground your agents in Sales Tax. Connect over MCP, enable the source, and every answer carries its receipts.

Scaling up?