530A Model calculator

com.530amodelv1.1.0更新於 Sep 30, 2026

Free, deterministic 530A (Trump Account) projections, verified rules, and searchable guides.

已驗證Streamable HTTP可網頁執行AI & ML

安裝

在 SourceWeft 中

  1. 開啟 儀表板中的 530A Model calculator，將其新增到工作區。
  2. 為需要使用其工具的對話啟用該服務。

Web executable，透過 Streamable HTTP。 遠端服務在工作區中設定後即可從網頁執行環境執行。

其他 MCP 客戶端

把它新增到你客戶端的 mcpServers 設定中。

{
  "mcpServers": {
    "calculator": {
      "type": "http",
      "url": "https://mcp.530amodel.com"
    }
  }
}

README

530A Model

530amodel.com — a free, privacy-first, mobile-first scenario-planning calculator for 530A custodial retirement accounts ("Trump Accounts").

No login. No email capture. No monetization. All calculation runs in your browser.

Use the public API / MCP server

The engine is free to call — no key, nothing stored, attribution to 530amodel.com asked:

  • JSON API — https://api.530amodel.com (POST /v1/project, GET /v1/rules, GET /v1/returns; OpenAPI 3.1 with full request/response schemas)
  • MCP server — https://mcp.530amodel.com (streamable HTTP; tools project_530a, explain_530a, search, fetch; registry name com.530amodel/calculator). Works as a custom connector in Claude and ChatGPT, and with the Anthropic/OpenAI agent APIs.
  • Docs & platform quickstarts — 530amodel.com/api · machine-readable maps: llms.txt, llms-full.txt
  • Contact — [email protected]

Structure

packages/  engine/     # pure TS calculation engine — zero deps, deterministic, integer-cents money  config/     # legal figures + sources + verifiedAt + feature flags (single source of truth)  ui/         # design tokens, shared components, chartsapps/  web/        # Astro static site (widget, advanced model, content pages)  workers/    # Cloudflare Workers: analytics beacon, rollup cron, newsfeed cron, email  api/        # public calculator API (wraps the engine; OpenAPI; cache-by-input-hash)  mcp/        # read-only MCP server (project_530a / explain_530a)reference/    # Python reference implementation + golden-vector generatore2e/          # Playwright specs (user journeys UC-1..UC-7)

Non-negotiables

  1. Financial math is exact, deterministic, and independently tested (golden vectors from the Python reference implementation must match the TS engine to the cent).
  2. Static-first: calculation is client-side; a million users cost the same as one.
  3. Minimal dependencies, no PII, small attack surface, everything scanned in CI.
  4. Every user-facing claim is honest: ranges are labeled estimates, legal figures cite sources, unverified items live behind OFF feature flags (packages/config/src/flags.ts).

Development

sh
pnpm installpnpm check     # lint + typecheck + test + build (same as CI)pnpm --filter @530a/web dev

Node ≥ 22, pnpm ≥ 11. Engine numeric contract: money is integer cents (bigint), balances are quantized round-half-to-even every monthly step, display formatting only via formatMoney.

Disclaimer

This tool provides educational estimates only, not financial, tax, or legal advice. Market projections are probabilistic and not guarantees.

來源：README.md，提交 a490753

工具

0
工具後設資料尚未被收錄。

版本歷史

1
  1. v1.1.0最新Sep 16, 2026