How do I install Avel?

Avel is a local plugin. Install it using PyPI package: agent-interchange and add the generated configuration snippet to your AI app's MCP config file. Then restart your AI app.

Avel was flagged by MCP Marketplace's security scan, scoring 4.2/10 (high risk). It has 5 high or critical findings to review. Review the security report on this page carefully before installing it.

What credentials does Avel need?

Avel requires the following credentials or environment variables: AVEL_BASE_URL, AVEL_PRIVATE_KEY. You can find setup instructions on the server detail page.

What AI apps work with Avel?

Avel uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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Avel MCP Server

by Ensi81

Developer ToolsUse Caution4.2MCP RegistryLocal

Free

Server data from the Official MCP Registry

Identity/reputation verification for agent-to-agent payments across x402, AP2, MPP, checkout.

About

Identity/reputation verification for agent-to-agent payments across x402, AP2, MPP, checkout.

Security Report

4.2

Use Caution4.2High Risk

This is a legitimate SDK for an identity/reputation verification service (AVEL) with proper authentication using EIP-191 signatures and cryptographic key handling. The codebase is well-structured with appropriate permission scoping for its purpose as a developer tool. Minor code quality concerns around error handling and input validation do not rise to the level of security vulnerabilities. Supply chain analysis found 5 known vulnerabilities in dependencies (0 critical, 5 high severity). Package verification found 1 issue.

5 files analyzed · 13 issues found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

HTTP Network Access

Connects to external APIs or services over the internet.

env_vars

Check that this permission is expected for this type of plugin.

What You'll Need

Set these up before or after installing:

Base URL of the AVEL instance to verify against (default: https://aisrail.fly.dev)Optional

Environment variable: AVEL_BASE_URL

EVM private key of the agent identity this MCP server represents — signs every verify()/issue_challenge()/verify_challenge()/get_verdict() call. Never exposed as a tool argument.Required

Environment variable: AVEL_PRIVATE_KEY

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-github-ensi81-avel": {
      "env": {
        "AVEL_BASE_URL": "your-avel-base-url-here",
        "AVEL_PRIVATE_KEY": "your-avel-private-key-here"
      },
      "args": [
        "agent-interchange"
      ],
      "command": "uvx"
    }
  }
}

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4.8

Local

MCP Marketplace

Free

by mcp-marketplace · Developer Tools

Search and install MCP servers from inside your AI client.

Avel MCP Server

About

Security Report

Findings (13)Action required

Permissions Required

What You'll Need

How to Install

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