Memory / knowledge graph (reference)
Last tested 2026-10-22
Score 93/100 · Last tested 2026-10-22 · Version tested 2.0.0 · Package @modelcontextprotocol/server-memory · Repo modelcontextprotocol/servers
Summary: Memory / knowledge graph (reference) completed an MCP handshake without credentials and exposed 9 tools.
Test results
| Test | Result | Points | Evidence |
|---|---|---|---|
| install | pass | 20 | npm install @modelcontextprotocol/server-memory (Node 20, Linux) succeeded in 1s. |
| handshake | pass | 30 | MCP initialize + tools/list over stdio succeeded with no credentials; 9 tools listed in 6.1s. |
| maintenance | pass | 25 | Repo pushed 2 days before test; 91,469 GitHub stars. |
| docs | pass | 15 | README over 3,000 chars; install instructions present; mcpServers config example present. Automated check of the package's own README (README shipped in npm package). |
| license | partial | 3 | License not machine-detected as OSI (SEE LICENSE IN LICENSE). |
Local-model readiness
Schema context cost: ~925 tokens for 9 tools (4,422 bytes) · about 11% of an 8k context. Method: tiktoken cl100k_base over compact JSON of name+description+inputSchema (approximate).
Small-model friendly (schema heuristic, not a model result): high.
| Model | Quantization | Runs | Task completed | Correct tool | Avg rounds |
|---|---|---|---|---|---|
| qwen2.5-3b-instruct-q4km | Q4_K_M GGUF (bartowski/Qwen2.5-3B-Instruct-GGUF), CPU-only | 3 | 100% | 100% | 3 |
| qwen2.5-1.5b-instruct-q4km | Q4_K_M GGUF (bartowski/Qwen2.5-1.5B-Instruct-GGUF), CPU-only | 3 | 67% | 100% | 2 |
Functional tasks (2/2 passed, tested 2026-10-22)
| Task | Tool | Result | Evidence |
|---|---|---|---|
| store entity | create_entities | pass | [{"type":"text","text":"[\n {\n \"name\": \"TestedMCPProbe1792649724514\",\n \"entityType\": \"test\",\n \"observations\": [\n \"likes-dv5sss\"\n |
| retrieve entity | read_graph | pass | [{"type":"text","text":"{\n \"entities\": [\n {\n \"name\": \"TestedMCPProbe1792649724514\",\n \"entityType\": \"test\",\n \"observations\": |
Not tested
We did not test behavior with real credentials, security, or performance under load. These are planned; see methodology.
Tools listed
create_entities, create_relations, add_observations, delete_entities, delete_observations, delete_relations, read_graph, search_nodes, open_nodes
Config used in our test
{
"mcpServers": {
"memory-knowledge-graph-reference": {
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/server-memory"
]
}
}
}FAQ
Is Memory / knowledge graph (reference) deprecated?
No. @modelcontextprotocol/server-memory was not deprecated or archived when we last tested it on 2026-10-22.
What replaces Memory / knowledge graph (reference)?
Nothing; Memory / knowledge graph (reference) is not deprecated as of 2026-10-22.
Does Memory / knowledge graph (reference) need an API key?
No. It completed an MCP handshake with no credentials and listed 9 tools.
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