Medium Risk

create_index_from_json

Complete workflow to create a Searchcraft index from JSON data. Fetches JSON from URL or file, analyzes structure, generates schema, creates the index, and adds all the JSON data as documents to the index in one step.

How to control create_index_from_json ↓

What create_index_from_json does on Searchcraft MCP Server

AI agents use create_index_from_json to create or update resources in Searchcraft MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Searchcraft MCP Server environment.

Medium Risk

Why create_index_from_json needs a policy

This tool performs reversible data creation and modification operations (creating indexes and adding documents). While it modifies persistent data structures, these actions are not irreversible deletions; indexes and documents can be modified or removed later. It does not execute arbitrary code or trigger external side effects beyond index management, so Execute does not apply.

From the tool's definition Tool description explicitly states it 'creates the index' and 'adds all the JSON data as documents to the index' — these are data creation/modification operations.

Documented attack patterns abuse exactly the kind of access create_index_from_json gives an agent:

How to control create_index_from_json

PolicyLayer is an MCP gateway — it sits between your AI agents and Searchcraft MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for create_index_from_json:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_index_from_json": {
      "limits": [
        {
          "counter": "create_index_from_json_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

create_index_from_json stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

  1. Create a free account and register Searchcraft MCP Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
LIMIT THIS TOOL →

Free to start. No card required.

Related tools and policies

Go deeper

Questions about create_index_from_json

What does the create_index_from_json tool do? +

Complete workflow to create a Searchcraft index from JSON data. Fetches JSON from URL or file, analyzes structure, generates schema, creates the index, and adds all the JSON data as documents to the index in one step. It is categorised as a Write tool in the Searchcraft MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_index_from_json? +

Register the Searchcraft MCP Server MCP server in PolicyLayer and add a rule for create_index_from_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 Searchcraft MCP Server. Nothing to install.

What risk level is create_index_from_json? +

create_index_from_json is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_index_from_json? +

Yes. Add a rate_limit block to the create_index_from_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 create_index_from_json completely? +

Set action: deny in the PolicyLayer policy for create_index_from_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 create_index_from_json? +

create_index_from_json is provided by the Searchcraft MCP Server MCP server (searchcraft-inc/searchcraft-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Searchcraft MCP Server tool call.

Start from Searchcraft MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

Free to start. No card required.

48 Searchcraft MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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