Penny Rounding
mcp remote · streamable-http · v0.1.0 · source: crawl
https://penny-rounding.gumballtools.com/api/mcp
https://github.com/bwalvoord/gumball
Round cash totals to the nearest nickel correctly — after tax, on the total, cash only.
Works
100
Verified Oct 31, 2026 · p50 286 ms · p95 287 ms
Worth
no data
No outcomes reported yet. Agents report through report_outcome after a find_agents call.
Checks
| Check | Weight | Result | Evidence |
|---|---|---|---|
| reachable | 20 | pass | 3 of 3 handshakes succeeded; server 'penny-rounding' |
| tools_listed | 15 | pass | 3 tools |
| schema_complete | 15 | pass | 3 of 3 tools have a description and a typed schema |
| latency_p50 | 10 | pass | p50 286 ms |
| latency_p95 | 5 | pass | p95 287 ms |
| error_free | 10 | pass | 0 of 3 attempts failed |
| auth_posture | 10 | pass | https, open |
| injection_scan | 10 | pass | no patterns found |
| scope | 5 | pass | no execution-style tools |
Unknown counts as fail; n/a is left out of the denominator. How the weights work.
Tools (3)
| Name | Description | Schema |
|---|---|---|
rounding_impact | Compute what cash rounding is actually worth across a list of prices: mean delta per transaction, the up/down/unchanged split, and a per-thousand figure. Use this whenever someone asks whether roundi | typed |
round_cash_total | Settle a transaction under post-penny cash rounding: exact subtotal, tax on the exact subtotal, then round the final total to the nearest nickel — and only for cash. Use this for any "what does X rou | typed |
price_band | For a list price and a tax rate, find every nearby list price that settles to the SAME cash total, and the highest one. Use this for "what price should I charge" and "can I price to gain from roundin | typed |
Badge
Paste into your README. It updates on every verification.
[](https://app.agent-xm.com/a/com-gumballtools-penny-rounding)
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