sign_data

Sign data using a cryptographic key

SERVERClaude MCP Server Ecosystem SOURCEcoder-rl/claude_mcpserver_dev1

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/coder-rl-claude-mcpserver-dev1/sign-data.md

WHAT IT DOES

What sign_data does on Claude MCP Server Ecosystem

AI agents invoke sign_data to trigger actions in Claude MCP Server Ecosystem. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why sign_data is rated High

Signing data is an active cryptographic operation that produces a digital signature binding a key to content. It is not merely reading data; it executes a cryptographic primitive that can be used to authenticate messages, authorize transactions, or attest to content. Misuse could allow an AI agent to forge authorization or authenticity for arbitrary data using the server's keys, making severity high.

From the tool's definition 'Sign data using a cryptographic key' — performs a cryptographic signing operation using a key

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs sign_data safely

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

sign_data Rate-limited

sign_data stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "sign_data": {
      "limits": [
        {
          "counter": "sign_data_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Claude MCP Server Ecosystem, apply this rule, and every sign_data call is checked against it from then on.

FAQ

Questions about sign_data

What does the sign_data tool do? +

Sign data using a cryptographic key. It is categorised as a Execute tool in the Claude MCP Server Ecosystem MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on sign_data? +

Register the Claude MCP Server Ecosystem MCP server in PolicyLayer and add a rule for sign_data: 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 Claude MCP Server Ecosystem. Nothing to install.

What risk level is sign_data? +

sign_data is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit sign_data? +

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

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

sign_data is provided by the Claude MCP Server Ecosystem MCP server (coder-rl/claude_mcpserver_dev1). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Claude MCP Server Ecosystem, and thousands of servers like it.

This server

All 229 Claude MCP Server Ecosystem tools → High-risk tools on this server →

Across the catalogue

All high-risk MCP tools → The MCP Attack Database →

Guides

Govern code and CI agents →Agent sandbox →Least privilege for MCP →