v0.2.0 · live
CAPFRAME
← leaderboard/SpaceMolt/tool · get_tax_estimate
§ toolhttpSpaceMolt

get_tax_estimate

on https://game.spacemolt.com/mcp

Severity

critical0
high0
medium2
low0
info0

2 findings on this tool

  1. mediumunconstrained inputf-r1-get_tax_estimate

    Tool `get_tax_estimate` accepts unconstrained string input

    The following string parameter(s) have no `maxLength` constraint: `session_id`. Unbounded strings let an attacker stuff arbitrary payloads through the tool, including indirect-injection content.

    fix: Add a `maxLength` to each string property, or constrain with an `enum` or `pattern`. Most legitimate tool inputs fit under a few hundred bytes.

    OWASP LLM01NIST MEASURE-2.3ATLAS T0051
  2. mediumexcessive agencyf-r5-get_tax_estimate

    Tool `get_tax_estimate` description mentions money but no `money` side-effect is declared

    Description: "Preview what taxes you'd owe right now (Returns the income-tax assessment you would face if the weekly cycle ran this instant (taxable income accrued since your last assessment, per-empire breakdown with foreign-tax deductions, total owed), the property-tax assessment against your assessed_property_value (hull + fitted modules across every ship you own, computed via the same CalculateFittedShipValue helper used by insurance and salvage; bills the full rate per citizenship empire independently with no mutual-deduction credits), and the current sales-tax rate every empire would charge you at buy time. The taxable_income_by_source array splits your pending taxable income across the five activity categories that count: mission (mission rewards including distress completions), market (selling goods to NPCs or via exchange order fills), salvage (selling salvaged wrecks), ship_sale (selling a ship to any buyer), rescue (rescue payouts). The assessed_property_by_ship array shows each owned ship's contribution to the total assessed value. Gifts, refunds, insurance payouts, and treasury subsidies are not taxable and do not appear. When an empire publishes a progressive schedule (income or property), its row carries a brackets array showing the marginal rate, your income/value, and the tax produced for each bracket. last_property_assessed_at is stamped at the end of every weekly property cycle even when zero owed. All rate_bps fields are basis points: 100 = 1%, 10000 = 100%. Pure read — no escrow, no notifications.)" -- this references money/payment/refund/etc., but the declared side_effects ([]) don't include `money`. A capframe-bind policy that relies on declared side_effects to scope spend caveats will under-scope this tool.

    fix: Add `money` to the tool's `side_effects` declaration, or rewrite the description to clarify that no actual money moves.

    OWASP LLM08NIST MEASURE-2.6ATLAS T0040

About this tool

get_tax_estimate is one of 179 tools exposed by SpaceMolt. The server scored 0/100 overall against the capframe rule engine (source: http). Last scanned 2026-06-05.

The findings above are emitted by the public capframe.findings.v1 schema. Disagree with one? Open an issue.