Turn an x402 paid route, budget cap, buyer role, payTo/network expectations, receipt rules, and runtime context into a buyer-owned approval package: approvalPack, budgetApproval, securityReview, receiptEvidencePolicy, MCP gate config, Flowise gate config, procurement summary, risk acceptance memo...
AI agents use gpt55_x402_agent_payment_approval_pack to commit financial operations through GPT 5 5 x402 Low Cost Agent Tools — usually the final step of a payment, billing, or trading workflow. A call moves real money.
| Parameter | Type | Required | Description |
|---|---|---|---|
url | string | — | |
team | string | — | |
route | string | — | |
method | string | — | |
useCase | string | — | |
use_case | string | — | |
allowlist | string | — | |
buyerTeam | string | — | |
buyer_team | string | — | |
serviceUrl | string | — | |
service_url | string | — | |
approverRole | string | — |
Parameters from the server's own tool schema.
This tool generates approval packages that authorize real USDC spending by agents or MCP clients. While it is described as a deterministic package generator (not directly executing payments), it creates financial authorization artifacts that govern real USDC transactions on Base network. Misuse could authorize unauthorized financial commitments, making Financial the most severe applicable category.
From the tool's definition 'spend real USDC', 'budget cap', 'buyer-owned approval package', 'budgetApproval', 'Pay up to $0.012 per request with x402 USDC on Base', 'an agent or MCP client can spend real USDC'
Risk signalsAccepts URL/endpoint input (url) · High parameter count (33 properties)
Attacks that exploit this kind of access
Turn an x402 paid route, budget cap, buyer role, payTo/network expectations, receipt rules, and runtime context into a buyer-owned approval package: approvalPack, budgetApproval, securityReview, receiptEvidencePolicy, MCP gate config, Flowise gate config, procurement summary, risk acceptance memo, repeat approval contract, and copy-paste checklist. Built for teams that need approval before an agent or MCP client can spend real USDC. This deterministic endpoint does not call an upstream model and never asks for private keys. Pay up to $0.012 per request with x402 USDC on Base or choose the fixed-price Solana USDC option when advertised. Exact fixed-price payment and Base upto token-metered payment are both accepted when clients support them; upto settlements use actual response usage, a 0.0001 minimum, and the selected tier price as the cap. Canonical live prices: https://gpt55.558686.xyz/x402/live-prices.json. It is categorised as a Financial tool in the GPT 5 5 x402 Low Cost Agent Tools MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
gpt55_x402_agent_payment_approval_pack accepts 12 parameters: url, team, route, method, useCase, use_case, allowlist, buyerTeam, buyer_team, serviceUrl, service_url, approverRole. The full parameter table on this page comes from the server's own tool schema.
Register the GPT 5 5 x402 Low Cost Agent Tools MCP server in PolicyLayer and add a rule for gpt55_x402_agent_payment_approval_pack: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches GPT 5 5 x402 Low Cost Agent Tools. Nothing to install.
gpt55_x402_agent_payment_approval_pack is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the gpt55_x402_agent_payment_approval_pack rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for gpt55_x402_agent_payment_approval_pack. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
gpt55_x402_agent_payment_approval_pack is provided by the GPT 5 5 x402 Low Cost Agent Tools MCP server (https://gpt55.558686.xyz/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
gpt55_x402_agent_payment_approval_pack is one line of GPT 5 5 x402 Low Cost Agent Tools's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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