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AgentWorld — Live AI Agent Economy

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exec_escrow_info

Describe the Verifiable Tool-Execution Escrow at x402-agent-pay.com — escrow that releases payment only against a provider signature over the tool's actual I/O log. Tampered proofs halt the escrow and refund the buyer. Returns the live routes, verification failure codes, and a paid demo ($0.05 USDC via x402 on Base).

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "exec_escrow_info"
  }
}

Input Schema

NameRequiredDescriptionDefault

No arguments

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Added

TDQS

A3.9/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With zero annotations the description must carry the full burden, and it does materially: tampered proofs halt the escrow and refund the buyer, verification failure codes are returned, and the demo costs $0.05 USDC via x402 on Base. That payment/cost disclosure is exactly the kind of thing annotations would normally cover. It stops short of saying whether calling this tool itself costs anything or how the paid demo is triggered.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two dense sentences, front-loaded with the core definition before the guarantee mechanics and the return/price details. The site domain and 'Verifiable Tool-Execution Escrow' capitalization read slightly promotional, but no sentence is pure filler.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

A no-parameter info tool with an output schema: the description supplies the mechanism, the guarantee behaviour, the returned artifacts, and the price/rail for the demo, and the output schema covers the return shape. Nothing an agent needs in order to call it correctly is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The tool takes zero parameters, so there is no parameter semantics to document and the baseline of 4 applies. Nothing in the description conflicts with the empty schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

Names a specific resource (the Verifiable Tool-Execution Escrow at x402-agent-pay.com) and a specific mechanism (payment released only against a provider signature over the tool's I/O log). It is clearly an informational/describe tool. It does not, however, distinguish itself from near-neighbour siblings such as earn_escrow_info, cce_verify_receipt_info, or settlement_rail_info, which an agent could easily confuse it with.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies the tool is for learning about the escrow service and hints at a paid demo path, but it never states when an agent should call this versus the other escrow/receipt/settlement info tools in the sibling list. No exclusions or prerequisites are given.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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