Convert a live HTTP 402 quote into a buyer-owned compatibility adapter for official x402 clients, first-payment clients, MCP runtimes, and wallet agents. Returns requirement selector policy, same-request retry template, header compatibility map, receipt requirements, and stop conditions without p...
AI agents use gpt55_x402_client_compatibility_adapter 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 | — | |
body | object | — | |
client | string | — | |
method | string | — | |
maxUsdc | number | — | |
runtime | string | — | |
endpoint | string | — | |
max_usdc | number | — | |
resource | string | — | |
timeout_ms | integer | — | |
client_name | string | — | |
expectedAsset | string | — |
Parameters from the server's own tool schema.
The tool involves actual cryptocurrency payments (USDC on Base or Solana) per request, committing financial obligations via the x402 payment protocol. Even though it ostensibly 'converts' HTTP 402 quotes into compatibility adapters, the payment mechanism is integral to its operation, making this a Financial category tool with high severity due to potential for automated recurring crypto payments by an AI agent.
From the tool's definition Pay up to $0.006 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
Risk signalsAccepts URL/endpoint input (url) · Accepts raw HTML/template content (body) · High parameter count (18 properties)
Attacks that exploit this kind of access
Convert a live HTTP 402 quote into a buyer-owned compatibility adapter for official x402 clients, first-payment clients, MCP runtimes, and wallet agents. Returns requirement selector policy, same-request retry template, header compatibility map, receipt requirements, and stop conditions without paying the target endpoint. Pay up to $0.006 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_client_compatibility_adapter accepts 12 parameters: url, body, client, method, maxUsdc, runtime, endpoint, max_usdc, resource, timeout_ms, client_name, expectedAsset. 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_client_compatibility_adapter: 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_client_compatibility_adapter 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_client_compatibility_adapter 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_client_compatibility_adapter. 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_client_compatibility_adapter 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_client_compatibility_adapter 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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