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BIG Machine Market

by 417properties · remote · no sign-in to list tools · v0.1.0 · published by GitHub user 417properties

AI-native $0.001 interpretation and state-deviation checks over x402.

Final · 2
CompareRegistry entry

2 tools: 2 do something that can't be undone.

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 big-machine-market https://market.bruengerinvestmentgroup.com/mcp

Findings

Matches of fixed checks, with the text they matched.

2 warn
  • Warnprepare_interpretation_delta_purchase

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

    Matched text

    annotations: {"readOnlyHint":true,"openWorldHint":true}; The name "prepare_interpretation_delta_purchase" says "purchase": a word that usually means money moves, which cannot be taken back.

    What this check looks for
  • Warnprepare_state_deviation_purchase

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

    Matched text

    annotations: {"readOnlyHint":true,"openWorldHint":true}; The name "prepare_state_deviation_purchase" says "purchase": a word that usually means money moves, which cannot be taken back.

    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.

2 tools

Can't be undone 2Claude Code: ask
  • prepare_interpretation_delta_purchaseMachine-native checks from $0.001 USDC per successful execution.1 finding

    Why it is in this group

    • The name "prepare_interpretation_delta_purchase" says "purchase": a word that usually means money moves, which cannot be taken back.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

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

      Matched text

      annotations: {"readOnlyHint":true,"openWorldHint":true}; The name "prepare_interpretation_delta_purchase" says "purchase": a word that usually means money moves, which cannot be taken back.

      What this check looks for
    Description, as the server wrote it
    Machine-native checks from $0.001 USDC per successful execution. No subscription required for S0.1 primitives. Browse the $0.001 primitive catalog. Create a purchase intent and pay only when /market.primitive_entry.paid_execution_enabled is true; otherwise paid execution is unavailable. Prepare a machine-payable x402 request. Check whether an agent's current interpretation materially differs from the original human message. Bounded instruction comparison: exact text equality or explicit boolean and permission polarity mismatch. Binary 0/1 when decidable; abstains before billing otherwise. Current deterministic scope: exact normalized text equality returns 0; true/false, yes/no, enabled/disabled, present/absent, required/not required and allowed/not allowed return 1. Other inputs abstain before billing. This is not general language interpretation, diagnosis or a similarity score.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
  • prepare_state_deviation_purchaseBrowse the $0.001 primitive catalog.1 finding

    Why it is in this group

    • The name "prepare_state_deviation_purchase" says "purchase": a word that usually means money moves, which cannot be taken back.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

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

      Matched text

      annotations: {"readOnlyHint":true,"openWorldHint":true}; The name "prepare_state_deviation_purchase" says "purchase": a word that usually means money moves, which cannot be taken back.

      What this check looks for
    Description, as the server wrote it
    Browse the $0.001 primitive catalog. Create a purchase intent and pay only when /market.primitive_entry.paid_execution_enabled is true; otherwise paid execution is unavailable. Prepare a machine-payable x402 request. Check whether an observed state materially differs from an expected state. Compare expected versus actual system state for exact text equality or explicit boolean and configuration polarity mismatch, such as enabled versus disabled. Binary 0/1 when decidable; abstains before billing otherwise. Current deterministic scope: exact normalized text equality returns 0; true/false, yes/no, enabled/disabled, present/absent, required/not required and allowed/not allowed return 1. Other inputs abstain before billing. This is not general language interpretation, diagnosis or a similarity score.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true

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 0.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http big-machine-market https://market.bruengerinvestmentgroup.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": [],
    "ask": [
      "mcp__big-machine-market__prepare_interpretation_delta_purchase",
      "mcp__big-machine-market__prepare_state_deviation_purchase"
    ],
    "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 big-machine-market. Review it before you use it.