observe_tool_partial
v2.1.0 \u2014 Record a partial result (tool returned a usable but incomplete result). No-op on unknown callId.
This record as markdown: /tools/danielsimonjr-memory-mcp/observe-tool-partial.md
What observe_tool_partial does on Enhanced Knowledge Graph Memory Server
AI agents use observe_tool_partial to create or update resources in Enhanced Knowledge Graph Memory Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Enhanced Knowledge Graph Memory Server environment.
Why observe_tool_partial is rated Medium
The tool writes a partial result record into the knowledge graph memory store. It creates or updates an entry associated with a callId. It is reversible in principle (the record can be deleted), placing it in Write rather than Destructive. The 'No-op on unknown callId' clause slightly limits blast radius but the tool still persists data, warranting medium severity.
From the tool's definition 'Record a partial result (tool returned a usable but incomplete result)' — writes/records observation data into the knowledge graph
Attacks that exploit this kind of access
The rule that runs observe_tool_partial safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Enhanced Knowledge Graph Memory Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For observe_tool_partial, this is the rule to start with:
observe_tool_partial 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Enhanced Knowledge Graph Memory Server, apply this rule, and every observe_tool_partial call is checked against it from then on.
Questions about observe_tool_partial
v2.1.0 \u2014 Record a partial result (tool returned a usable but incomplete result). No-op on unknown callId. It is categorised as a Write tool in the Enhanced Knowledge Graph Memory Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Enhanced Knowledge Graph Memory Server MCP server in PolicyLayer and add a rule for observe_tool_partial: 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 Enhanced Knowledge Graph Memory Server. Nothing to install.
observe_tool_partial is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the observe_tool_partial 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.
Set action: deny in the PolicyLayer policy for observe_tool_partial. 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.
observe_tool_partial is provided by the Enhanced Knowledge Graph Memory Server MCP server (danielsimonjr/memory-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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