Extract structured JSON from short text according to a caller-provided schema or field list. Useful for agents that need cheap parsing, lead cleanup, invoice notes, support tickets, and lightweight ETL steps. Standard quality tier uses gpt-5.4-mini; price is derived from official OpenAI relative ...
AI agents call gpt55_extract_json 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 |
|---|---|---|---|
text | string | Yes | |
fields | array | — | |
schema | object | — | |
max_tokens | integer | — | |
temperature | number | — |
Parameters from the server's own tool schema.
This tool takes input text and extracts/structures it according to a schema, producing parsed output. It has no side effects on stored data, cannot execute code or commands, and does not modify, delete, or create persistent records. The financial framing (pricing/payment) describes how the tool is monetized, not what it does operationally. Classification as Read is appropriate for a lightweight ETL parsing utility.
From the tool's definition Tool performs 'Extract structured JSON from short text' - a data retrieval and parsing operation with no modification, deletion, or execution capabilities.
Attacks that exploit this kind of access
Extract structured JSON from short text according to a caller-provided schema or field list. Useful for agents that need cheap parsing, lead cleanup, invoice notes, support tickets, and lightweight ETL steps. Standard quality tier uses gpt-5.4-mini; price is derived from official OpenAI relative token costs with a local margin and floor. 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 Read tool in the GPT 5 5 x402 Low Cost Agent Tools MCP Server, which means it retrieves data without modifying state.
gpt55_extract_json accepts 5 parameters: text, fields, schema, max_tokens, temperature. Required: text. 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_extract_json: 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_extract_json 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_extract_json 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_extract_json. 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_extract_json 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_extract_json 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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