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BTC DCA Engine

by btcdcaengine.com · remote · no sign-in to list tools · v1.4.0 · published by com.btcdcaengine

Historical dollar-cost-averaging simulator for Bitcoin and other assets.

Changes · 2
CompareRegistry entry

4 tools: 2 change things and 2 only read.

Scanned Oct 21, 2026

2 checks matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http btc-dca-engine https://btcdcaengine.com/mcp

Findings

Matches of fixed checks, with the text they matched.

2 warn
  • Warnrun_dca

    The server marks "run_dca" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "run_dca" says "run": a word for a change.

    What this check looks for
  • Warncompare_plans

    The server marks "compare_plans" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "compare_plans" says "compare": a word for reading.

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

4 tools

Changes things 2Claude Code: ask
  • compare_plansRun up to 5 plans over the same data and rank them by final value (2 without a signed-in Pro account or a Pro API key).1 finding

    Why it is in this group

    • The name "compare_plans" says "compare": a word for reading.
    • The description's first verb is "run": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "compare_plans" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "compare_plans" says "compare": a word for reading.

      What this check looks for
    Description, as the server wrote it
    Run up to 5 plans over the same data and rank them by final value (2 without a signed-in Pro account or a Pro API key). Use to compare assets, cadences or start dates side by side. One share_url opens them all together.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • run_dcaSimulate one dollar-cost-averaging plan against real historical closes.1 finding

    Why it is in this group

    • The name "run_dca" says "run": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "run_dca" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "run_dca" says "run": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Simulate one dollar-cost-averaging plan against real historical closes. Returns totals, end-of-year checkpoints and a share_url that opens the same run in the app.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Only reads 2Claude Code: allow
  • data_statusThe vintage of the loaded price data and how often it refreshes.No findings

    Why it is in this group

    • The name "data_status" says "status": a word for reading.
    Description, as the server wrote it
    The vintage of the loaded price data and how often it refreshes.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • list_assetsAssets this endpoint can simulate, with the date each series starts and ends.No findings

    Why it is in this group

    • The name "list_assets" says "list": a word for reading.
    Description, as the server wrote it
    Assets this endpoint can simulate, with the date each series starts and ends. Call before composing a plan so start dates fall inside coverage.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.4.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http btc-dca-engine https://btcdcaengine.com/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__btc-dca-engine__list_assets",
      "mcp__btc-dca-engine__data_status"
    ],
    "ask": [
      "mcp__btc-dca-engine__run_dca",
      "mcp__btc-dca-engine__compare_plans"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as btc-dca-engine. Review it before you use it.