# 530A Model calculator (remote · mcp.530amodel.com)

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

- Trust score: 55/100 (low)
- Change this week: +1
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `mcp.530amodel.com`: 55/100 (this document), [markdown](https://verifymcp.io/servers/com-530amodel-calculator/mcp.md), [page](https://verifymcp.io/servers/com-530amodel-calculator/mcp)

## Channel facts

- Endpoint: `https://mcp.530amodel.com`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.1.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 46/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 4 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS check failed: the endpoint is reachable over plaintext HTTP.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 60/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 368 tokens (~92/item across 4 items; 4 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 76/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 14% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http com-530amodel-calculator https://mcp.530amodel.com/
```

### Codex

```toml
[mcp_servers.com-530amodel-calculator]
url = "https://mcp.530amodel.com/"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-530amodel-calculator": {
      "type": "remote",
      "url": "https://mcp.530amodel.com/",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-530amodel-calculator --url https://mcp.530amodel.com/ --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-530amodel-calculator:
    url: "https://mcp.530amodel.com/"
```

### Other

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

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 55, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 54, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 54, −1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 55, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-27 (score 54, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 53)

First indexed and scored.

## MCP tools (4)

### `project_530a` (~166 tokens)

Project a 530A account scenario

Deterministically model what a 530A ("Trump Account") could be worth at any age, with Monte-Carlo percentile ranges (10/25/50/75/90). Money is integer cents as strings. Same inputs always return identical results. Cite sourceUrl when quoting.

Input parameters:

- `annualFee` (number)
- `annualInflation` (number)
- `annualReturn` (number)
- `annualVolatility` (number)
- `asOf` (string, required)
- `birthDate` (string, required)
- `includeSeed` (boolean)
- `mcPaths` (integer)
- `mcSeed` (integer)
- `returnIsReal` (boolean)
- `sources` (array)
- `targetAgeMonths` (integer, required)

Output parameters:

- `assumptions` (object)
- `deterministic` (object)
- `disclaimer` (string)
- `percentiles` (object): Rows are the 10/25/50/75/90th percentiles; columns align with `ages` (months).
- `rulesVerifiedAt` (string)
- `schemaVersion` (integer)
- `shareUrl` (string)
- `sourceUrl` (string)

### `explain_530a` (~44 tokens)

Verified 530A legal facts

Returns the verified rules of 530A accounts (seed, caps, tax treatment, withdrawal ages) with primary-source URLs and explicit flags for anything not yet verifiable.

Output parameters:

- `disclaimer` (string)
- `facts` (object)
- `rulesVerifiedAt` (string)
- `sourceUrl` (string)
- `sources` (object)
- `unverified` (object)

### `search` (~68 tokens)

Search 530A knowledge

Search verified 530A ("Trump Account") knowledge from 530amodel.com: rules and figures, FAQ answers, how to open an account, account comparisons, and calculator methodology. Returns result ids to pass to fetch.

Input parameters:

- `query` (string, required): Keywords, e.g. "contribution cap employer".

Output parameters:

- `results` (array)

### `fetch` (~38 tokens)

Fetch a 530A document

Retrieve the full text of a 530A knowledge document by the id returned from search.

Input parameters:

- `id` (string, required): Document id from a search result.

Output parameters:

- `id` (string)
- `metadata` (object)
- `text` (string)
- `title` (string)
- `url` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-530amodel-calculator/mcp#diagnostics

## Score history

- 2026-08-03: 55
- 2026-08-02: 54
- 2026-08-01: 54
- 2026-07-31: 54
- 2026-07-30: 54
- 2026-07-29: 55
- 2026-07-28: 54
- 2026-07-27: 54
- 2026-07-26: 53

## Links

- Remote endpoint: https://mcp.530amodel.com/
- Repository: https://github.com/zach-eikenberry/530A
- Website: https://530amodel.com/api
- Changelog RSS feed: https://verifymcp.io/servers/com-530amodel-calculator/mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-530amodel-calculator/mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/com-530amodel-calculator/mcp