Skip to content

Circuit

by circuit.family · remote · no sign-in to list tools · v1.0.0 · published by family.circuit

Find and try paid AI agent skills for security, on-chain data, code, markets, research and news.

Changes · 1
CompareRegistry entry

4 tools: 1 change things and 3 only read.

Scanned Oct 21, 2026

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

claude mcp add --transport http marketplace https://www.circuit.family/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warntry_skill

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

    Matched text

    annotations: {"readOnlyHint":true,"openWorldHint":true}; The description's first verb is "run": a word for a change.

    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 1Claude Code: ask
  • try_skillRun a skill once for free on a small input (text up to 500 characters).1 finding

    Why it is in this group

    • 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 "try_skill" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"openWorldHint":true}; The description's first verb is "run": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Run a skill once for free on a small input (text up to 500 characters). 3 free calls per day. Paid calls have no such limits.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
Only reads 3Claude Code: allow
  • find_skillsSearch Circuit's paid AI agent skills by capability, e.g.No findings

    Why it is in this group

    • The name "find_skills" says "find": a word for reading.
    Description, as the server wrote it
    Search Circuit's paid AI agent skills by capability, e.g. 'phishing link', 'token price' or 'summarize a web page'. Returns each skill's id, price in USDG, summary and 30-day usage. Free.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false
  • get_skillFull details for one skill: input and output schema, a real example, price, 30-day usage, uptime, rating and how to pay for it.No findings

    Why it is in this group

    • The name "get_skill" says "get": a word for reading.
    Description, as the server wrote it
    Full details for one skill: input and output schema, a real example, price, 30-day usage, uptime, rating and how to pay for it. Free.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false
  • list_recipesWorkflows that chain several skills (vet a token, install a dependency safely, screen untrusted input and more), with the cost of one run.No findings

    Why it is in this group

    • The name "list_recipes" says "list": a word for reading.
    Description, as the server wrote it
    Workflows that chain several skills (vet a token, install a dependency safely, screen untrusted input and more), with the cost of one run. Free.

    Annotations the server declares

    • readOnlyHint: 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 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http marketplace https://www.circuit.family/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__marketplace__find_skills",
      "mcp__marketplace__get_skill",
      "mcp__marketplace__list_recipes"
    ],
    "ask": [
      "mcp__marketplace__try_skill"
    ],
    "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 marketplace. Review it before you use it.