sandbox_files_read

SERVEREasyBits SOURCE@easybits.cloud/mcp

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/cloud-easybits-easybits/sandbox-files-read.md

WHAT IT DOES

What sandbox_files_read does on EasyBits

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

RISK

Why sandbox_files_read is rated Low

Tool retrieves file data from sandbox storage without modification or execution capabilities.

From the tool's definition Read a file from the sandbox. retrieves content, no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs sandbox_files_read safely

PolicyLayer is an MCP gateway: it sits between your AI agents and EasyBits, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For sandbox_files_read, this is the rule to start with:

sandbox_files_read Allowed

sandbox_files_read is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "sandbox_files_read": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect EasyBits, apply this rule, and every sandbox_files_read call is checked against it from then on.

FAQ

Questions about sandbox_files_read

What does the sandbox_files_read tool do? +

Read a file from the sandbox. Small text (<50KB) returns inline JSON with full content. Recognized images (PNG/JPEG/GIF/WebP) under 1MB return as MCP image blocks. Larger or binary files upload to platform storage and return a 7-day signed URL plus metadata — this prevents context-window blow-up in the consuming agent. Use encoding=base64 for binary. It is categorised as a Read tool in the EasyBits MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on sandbox_files_read? +

Register the EasyBits MCP server in PolicyLayer and add a rule for sandbox_files_read: 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 EasyBits. Nothing to install.

What risk level is sandbox_files_read? +

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

Can I rate-limit sandbox_files_read? +

Yes. Add a rate_limit block to the sandbox_files_read 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 sandbox_files_read completely? +

Set action: deny in the PolicyLayer policy for sandbox_files_read. 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 sandbox_files_read? +

sandbox_files_read is provided by the EasyBits MCP server (@easybits.cloud/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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