GPT-5.4 Mini chat for mainstream short answers, routing decisions, extraction helpers, and buyer trials. Pay up to $0.00293 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 accep...
AI agents use chat_standard 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 |
|---|---|---|---|
model | string | — | |
stream | boolean | — | |
messages | array | Yes | |
max_tokens | integer | — |
Parameters from the server's own tool schema.
This tool involves real cryptocurrency payments (USDC on Base and Solana) per request. Every invocation can trigger a financial transaction, making it a Financial category tool. Misuse could result in repeated micropayments adding up to significant costs, hence high severity.
From the tool's definition Pay up to $0.00293 per request with x402 USDC on Base or choose the fixed-price Solana USDC option
Risk signalsAccepts raw HTML/template content (messages[].content)
Attacks that exploit this kind of access
GPT-5.4 Mini chat for mainstream short answers, routing decisions, extraction helpers, and buyer trials. Pay up to $0.00293 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.
chat_standard accepts 4 parameters: model, stream, messages, max_tokens. Required: messages. 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 chat_standard: 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.
chat_standard 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 chat_standard 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 chat_standard. 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.
chat_standard 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.
chat_standard 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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