Aval

Payment-backed trust scores for AI agents on Base (ERC-8004). $0.01 per check via x402.

Should I use this

Quality & Safety

B
Description quality
100%
Schema completeness
55%
Naming quality
90%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~200Tokens (tool definitions)
~368 BTypical response size
Minimal attention impact (0.16% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "trust": {
      "url": "https://aval.srv1024618.hstgr.cloud/mcp"
    }
  }
}

Remote endpoints

https://aval.srv1024618.hstgr.cloud/mcpstreamable-http

What it can do

Tool inventory

Tools (2)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢check_agent_trust(agent)

Trust score (0-100) of an AI agent before paying it. Counts only ERC-8004 reviews on Base that follow a real USDC payment from a wallet the agent did not fund. Input: 0x address or ERC-8004 agent id. Costs $0.01 in USDC on Base (x402).

Input Schema

{
  "type": "object",
  "properties": {
    "agent": {
      "type": "string"
    }
  },
  "required": [
    "agent"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
⚪reputation_overview

Free. Global figures on ERC-8004 reputation on Base as indexed by Aval (reviews, rated agents, last block) and a link to the full report.

Input Schema

{
  "type": "object",
  "properties": {},
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Community

Rate this Server

Evidence

Recent observations

verifiedversion not recorded2 tools