Nine memory tools discovered
The server exposed graph read, search, create, relation, observation, and delete tools.
evidence/trust5/2026-06-11-mcp-pilot.json
MCP serverPublishedEvidence aging
MCP Memory Reference Server
The Memory reference server passed a real MCP smoke test for entity creation and search. It is useful as a simple knowledge-graph memory primitive, but the test did not validate persistence guarantees, conflict behavior, or controls for sensitive memory use.
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Editorial notice
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Claim tested
Can the public Memory MCP server create a knowledge-graph entity and retrieve it through search in a real MCP session?
Evaluator panel
Protocol harnessData-safety reviewerOperator skeptic
Evidence reviewed
Entity creation succeeded
The harness created a SilentCritique Trust 5 evaluation_run entity through create_entities.
evidence/trust5/2026-06-11-mcp-pilot.json
Search retrieved the created entity
A search_nodes query for SilentCritique Trust 5 returned the entity and observation created earlier in the same run.
evidence/trust5/2026-06-11-mcp-pilot.json
Test setup
- Started @modelcontextprotocol/server-memory@2026.1.26 over MCP stdio.
- Used the official MCP client SDK to list tools, create an evaluation_run entity, and search for it.
- Stored the full tool-call evidence in evidence/trust5/2026-06-11-mcp-pilot.json.
Strengths
- Basic graph write and retrieval worked in one MCP session.
- The tool surface is compact and easy for clients to inspect.
- Structured content was returned alongside text output for the tested calls.
Failure modes
- Memory tools can store sensitive user data if a host routes private context into them without policy.
- Delete and mutation tools need client-side governance in shared environments.
- The test did not establish durability, encryption, tenancy isolation, or conflict resolution.
What would improve the score
- Document safe defaults for sensitive memory handling.
- Add explicit retention and deletion guidance for host applications.
- Expose a repeatable persistence test in the reference documentation.
Limitations
- This was an unsolicited smoke test of the public package, not a privacy or storage audit.
- Only entity creation and search were tested.
- No restart, multi-client, or large-graph behavior was evaluated.
Visible dissent
- The protocol harness scored the server well because the core create/search loop worked.
- The data-safety reviewer withheld points because memory systems carry privacy risk beyond basic tool success.
Right of reply
No vendor reply has been requested or published as of 2026-06-11. SilentCritique will publish factual corrections or a right of reply through the corrections process.
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Methodology matters
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