lib_add_symbol_arc

A write tool on the Eda Agent MCP server.

SERVEREda Agent SOURCEsalitronic/eda-agent

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/eda-agent/lib-add-symbol-arc.md

WHAT IT DOES

What lib_add_symbol_arc does on Eda Agent

AI agents use lib_add_symbol_arc to create or update resources in Eda Agent, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Eda Agent environment.

RISK

Why lib_add_symbol_arc is rated Medium

This tool adds a geometric element (arc) to a symbol library, which is a reversible modification of design data. It does not delete, execute arbitrary code, or move financial resources. The write category is most appropriate. Severity is medium because misuse could corrupt library symbols affecting designs, but the scope is limited to library modifications rather than active designs or financial systems.

From the tool's definition Tool name 'lib_add_symbol_arc' indicates creation/addition of an arc element to a library symbol. The 'add_' prefix suggests a write operation that creates or modifies library content.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs lib_add_symbol_arc safely

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

lib_add_symbol_arc Rate-limited

lib_add_symbol_arc 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "lib_add_symbol_arc": {
      "limits": [
        {
          "counter": "lib_add_symbol_arc_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about lib_add_symbol_arc

What does the lib_add_symbol_arc tool do? +

lib_add_symbol_arc is a write tool on the Eda Agent MCP server. It is categorised as a Write tool in the Eda Agent MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on lib_add_symbol_arc? +

Register the Eda Agent MCP server in PolicyLayer and add a rule for lib_add_symbol_arc: 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 Eda Agent. Nothing to install.

What risk level is lib_add_symbol_arc? +

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

Can I rate-limit lib_add_symbol_arc? +

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

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

lib_add_symbol_arc is provided by the Eda Agent MCP server (salitronic/eda-agent). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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