Turn a paid MCP tool route, buyer authorization scope, x402 quote expectations, spend caps, and receipt requirements into a copy-paste authorization bridge: MCP scope contract, x402 quote gate, same-request retry plan, receipt-bound execution gate, client policy JSON, audit schema, and fail-close...
AI agents call gpt55_x402_paid_mcp_authorization_bridge to retrieve information from GPT 5 5 x402 Low Cost Agent Tools without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
method | string | — | |
tool_name | string | — | |
buyer_agent | string | — | |
service_url | string | — | |
paid_tool_url | string | — | |
expected_asset | string | — | |
mcp_server_url | string | — | |
allowed_origins | array | — | |
expected_pay_to | string | — | |
expected_network | string | — | |
daily_budget_usdc | number | — | |
max_usdc_per_call | number | — |
Parameters from the server's own tool schema.
Even though gpt55_x402_paid_mcp_authorization_bridge only reads data, uncontrolled read access leaks sensitive information and racks up API costs — an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Risk signalsHigh parameter count (16 properties)
Attacks that exploit this kind of access
Turn a paid MCP tool route, buyer authorization scope, x402 quote expectations, spend caps, and receipt requirements into a copy-paste authorization bridge: MCP scope contract, x402 quote gate, same-request retry plan, receipt-bound execution gate, client policy JSON, audit schema, and fail-closed runtime snippet. Built for agents that need explicit authorization before spending real USDC on paid MCP tools. 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 Read tool in the GPT 5 5 x402 Low Cost Agent Tools MCP Server, which means it retrieves data without modifying state.
gpt55_x402_paid_mcp_authorization_bridge accepts 12 parameters: method, tool_name, buyer_agent, service_url, paid_tool_url, expected_asset, mcp_server_url, allowed_origins, expected_pay_to, expected_network, daily_budget_usdc, max_usdc_per_call. 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_paid_mcp_authorization_bridge: 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_paid_mcp_authorization_bridge is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the gpt55_x402_paid_mcp_authorization_bridge 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_paid_mcp_authorization_bridge. 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_paid_mcp_authorization_bridge 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_paid_mcp_authorization_bridge 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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