jsonpath
Query JSON with JSONPath (RFC 9535): dot and bracket names, indexes, slices, wildcards, recursive descent (..) and filters with comparisons, && || !, and length() / count() / match() / search() / value() functions, e.g. $.store.book[?@.price < 10].title. Returns matched values with their normaliz...
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What jsonpath does on ScorpTech x402 API
AI agents call jsonpath to retrieve information from ScorpTech x402 API without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
json | object | Yes | JSON document to query |
limit | integer | — | |
query | string | — | JSONPath expression starting with $ |
queries | array | — | Several expressions at once (alternative to query) |
Parameters from the server's own tool schema.
Why jsonpath is rated Low
Even though jsonpath 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.
Attacks that exploit this kind of access
The rule that runs jsonpath safely
PolicyLayer is an MCP gateway: it sits between your AI agents and ScorpTech x402 API, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For jsonpath, this is the rule to start with:
jsonpath is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect ScorpTech x402 API, apply this rule, and every jsonpath call is checked against it from then on.
Questions about jsonpath
Query JSON with JSONPath (RFC 9535): dot and bracket names, indexes, slices, wildcards, recursive descent (..) and filters with comparisons, && || !, and length() / count() / match() / search() / value() functions, e.g. $.store.book[?@.price < 10].title. Returns matched values with their normalized paths. Several queries per call. POST JSON body {json, query}. Price: $0.003 USDC per successful call (x402, Solana). Same tool over HTTPS: POST https://scorptech.it.com/api/x402/v1/jsonpath. It is categorised as a Read tool in the ScorpTech x402 API MCP Server, which means it retrieves data without modifying state.
jsonpath accepts 4 parameters: json, limit, query, queries. Required: json. The full parameter table on this page comes from the server's own tool schema.
Register the ScorpTech x402 API MCP server in PolicyLayer and add a rule for jsonpath: 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 ScorpTech x402 API. Nothing to install.
jsonpath 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 jsonpath 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 jsonpath. 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.
jsonpath is provided by the ScorpTech x402 API MCP server (https://scorptech.it.com/api/x402/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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