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browser_extract_json

Extract JSON from a matching element on the current page.

SERVERMcp Captcha Solver SOURCE2captcha/mcp-captcha-solver
Low RISK CLASS
Category Read
Parameters 00 required
Recommended Allowedsee the rule below
Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/2captcha-mcp-captcha-solver/browser-extract-json.md

What browser_extract_json does on Mcp Captcha Solver

AI agents call browser_extract_json to retrieve information from Mcp Captcha Solver without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Why browser_extract_json is rated Low

This tool retrieves structured data (JSON) from the current page without modifying, executing, or deleting anything. It has no side effects beyond data retrieval, making it a Read operation with low severity. The blast radius of misuse is limited to information disclosure—an agent could extract unintended data, but cannot damage systems, execute code, or trigger external operations.

From the tool's definition Tool name and description indicate data retrieval: 'Extract JSON from a matching element on the current page.' The verb 'extract' and the lack of any modification language (no create, update, delete, or execute) clearly indicate this is a read-only operation…

Questions about browser_extract_json

What does the browser_extract_json tool do? +

Extract JSON from a matching element on the current page. It is categorised as a Read tool in the Mcp Captcha Solver MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on browser_extract_json? +

Register the Mcp Captcha Solver MCP server in PolicyLayer and add a rule for browser_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 Mcp Captcha Solver. Nothing to install.

What risk level is browser_extract_json? +

browser_extract_json is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit browser_extract_json? +

Yes. Add a rate_limit block to the browser_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.

How do I block browser_extract_json completely? +

Set action: deny in the PolicyLayer policy for browser_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.

What MCP server provides browser_extract_json? +

browser_extract_json is provided by the Mcp Captcha Solver MCP server (2captcha/mcp-captcha-solver). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

More on Mcp Captcha Solver, and thousands of servers like it.

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