add_knowledge

Add a document to an agent

SERVERProAgentStore SOURCEhttps://mcp.proagentstore.online/mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/io-github-proagentstore-platform/add-knowledge.md

WHAT IT DOES

What add_knowledge does on ProAgentStore

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

RISK

Why add_knowledge is rated Medium

This tool creates/adds documents to agents, modifying the agent's knowledge base. This is reversible (documents can be deleted), making it a Write operation. Severity is medium because knowledge injection could poison agent behavior or enable prompt injection attacks, but the blast radius is limited to individual agent configurations rather than system-wide data destruction.

From the tool's definition Tool description states 'Add a document to an agent', which creates or uploads new data to the system.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs add_knowledge safely

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

add_knowledge Rate-limited

add_knowledge 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": {
    "add_knowledge": {
      "limits": [
        {
          "counter": "add_knowledge_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 ProAgentStore, apply this rule, and every add_knowledge call is checked against it from then on.

FAQ

Questions about add_knowledge

What does the add_knowledge tool do? +

Add a document to an agent. It is categorised as a Write tool in the ProAgentStore MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_knowledge? +

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

What risk level is add_knowledge? +

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

Can I rate-limit add_knowledge? +

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

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

add_knowledge is provided by the ProAgentStore MCP server (https://mcp.proagentstore.online/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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