add_observation

Add observation(s) to project entity/entities

SERVERProject Guardian MCP SOURCE1999azzar/project-guardian-mcp-server

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/1999azzar-project-guardian-mcp-server/add-observation.md

WHAT IT DOES

What add_observation does on Project Guardian MCP

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

RISK

Why add_observation is rated Medium

This tool creates or adds new data records (observations) to the system in a reversible manner. It does not execute arbitrary code, delete data irreversibly, or trigger financial transactions. It is not merely reading data. The ability to add observations modifies the project state but can be undone or corrected through other write operations.

From the tool's definition The tool description states it will "Add observation(s) to project entity/entities", which is a modification operation that creates new data entries attached to existing entities in the knowledge graph/database system.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs add_observation safely

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

add_observation Rate-limited

add_observation 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_observation": {
      "limits": [
        {
          "counter": "add_observation_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 Project Guardian MCP, apply this rule, and every add_observation call is checked against it from then on.

FAQ

Questions about add_observation

What does the add_observation tool do? +

Add observation(s) to project entity/entities. It is categorised as a Write tool in the Project Guardian MCP 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_observation? +

Register the Project Guardian MCP server in PolicyLayer and add a rule for add_observation: 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 Project Guardian MCP. Nothing to install.

What risk level is add_observation? +

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

Can I rate-limit add_observation? +

Yes. Add a rate_limit block to the add_observation 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_observation completely? +

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

add_observation is provided by the Project Guardian MCP server (1999azzar/project-guardian-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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