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io.github.jdhart81/security-preflight

by jdhart81 · remote · no sign-in to list tools · v1.3.1 · published by GitHub user jdhart81

Static MCP, source-code and injection-indicator checks with redacted signed receipts.

Changes · 3
CompareRegistry entry

5 tools: 3 change things and 2 only read.

Scanned Oct 21, 2026

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

claude mcp add --transport http security-preflight https://mcp.viridis-security.com/security-preflight/mcp

Tools

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

5 tools

Changes things 3Claude Code: ask
  • scan_source$1 bounded inline VulnCanon source scan; indicators, not proven exploits.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    $1 bounded inline VulnCanon source scan; indicators, not proven exploits. Direct MCP requires the checkout caller and verified fixed-order session. At most 64 KiB, 2000 lines, 4096 characters per line. No model calls, repository fetching or code execution. Returns a redacted signed receipt.

    Annotations the server declares

    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: false
  • screen_injection$1 batch of 1–20 text samples screened for deterministic injection markers.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    $1 batch of 1–20 text samples screened for deterministic injection markers. Direct MCP requires the checkout caller and verified fixed-order session. Maximum 64 KiB total. Heuristic indicators, not calibrated probabilities or a guarantee of safety. No model calls or automatic follow-on purchase.

    Annotations the server declares

    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: false
  • security_preflightRun a $1 static Security Preflight and return a signed receipt.No findings

    Why it is in this group

    • The description's first verb is "run": a word for a change.
    Description, as the server wrote it
    Run a $1 static Security Preflight and return a signed receipt. Direct MCP requires the checkout caller and verified fixed-order session. The separate x402 HTTP rail retains its existing introductory quote policy. No deployed endpoint is fetched or tested. Importing the receipt into an Agent Market profile is a separate, explicit action.

    Annotations the server declares

    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: false
Only reads 2Claude Code: allow
  • describe_agentDescribe scope, evidence boundary, inputs, and outputs.No findings

    Why it is in this group

    • The name "describe_agent" says "describe": a word for reading.
    Description, as the server wrote it
    Describe scope, evidence boundary, inputs, and outputs.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_security_receiptRead an unsigned, filtered public view; retain original delivery for signature verification.No findings

    Why it is in this group

    • The name "get_security_receipt" says "get": a word for reading.
    Description, as the server wrote it
    Read an unsigned, filtered public view; retain original delivery for signature verification.

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

claude mcp add --transport http security-preflight https://mcp.viridis-security.com/security-preflight/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__security-preflight__get_security_receipt",
      "mcp__security-preflight__describe_agent"
    ],
    "ask": [
      "mcp__security-preflight__security_preflight",
      "mcp__security-preflight__scan_source",
      "mcp__security-preflight__screen_injection"
    ],
    "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 security-preflight. Review it before you use it.