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530A Model calculator

Registre officiel Recherche et web

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

Code source Site web Documentation

Installation

Ajoutez ceci à la configuration MCP de votre client (Claude Desktop : claude_desktop_config.json ; Cursor : .cursor/mcp.json ; VS Code et les autres utilisent la même forme « mcpServers »).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http 530a-model-calculator 'https://mcp.530amodel.com'
Configuration JSON (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "530a-model-calculator": {
            "type": "http",
            "url": "https://mcp.530amodel.com"
        }
    }
}

Documentation

Tirée du README du projet sur GitHub, actualisée chaque semaine. Les liens ouvrent GitHub.

Sommaire
  1. 530A Model
  2. Use the public API / MCP server
  3. Structure
  4. Non-negotiables
  5. Development
  6. Disclaimer

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 — api@530amodel.com

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, charts
apps/
  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 generator
e2e/          # 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

pnpm install
pnpm 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.

Questions fréquentes

Qu'est-ce que 530A Model calculator ?

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

Comment installer 530A Model calculator ?

Il fonctionne comme serveur distant. Dans Claude Code : claude mcp add --transport http 530a-model-calculator 'https://mcp.530amodel.com'. Pour les autres clients, collez la configuration JSON de cette page dans leurs réglages MCP.

Faut-il une clé API pour 530A Model calculator ?

Son entrée au registre n'indique aucune clé ni secret obligatoire. Certaines fonctions peuvent tout de même demander un compte auprès du service auquel il se connecte.

530A Model calculator est-il open source ?

Oui. Son code est sur GitHub sous licence MIT.

Qui maintient 530A Model calculator ?

Il est publié par zach-eikenberry. AI.tn le référence sans le maintenir ni le recommander.

Issu du registre MCP officiel. Être listé n'est pas une recommandation : vérifiez le code et les permissions d'un serveur avant de lui donner accès à vos données.