A2/100

gannonh-memento-mcp

mcp0.3.9

@gannonh

Memento MCP: A Knowledge Graph Memory System for LLMs

By gannonh | 27 findings | Scanned 10/15/2026 | tooltrust-scanner/v0.3.20 | 424

Repository health

Popularity and maintenance signals alongside the security grade.

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Stars

424

current snapshot

Forks

current snapshot

Contributors

public GitHub contributors

Last commit

May 10, 2025

GitHub repository activity

Last release

May 12, 2025

GitHub metadata pending

Release version

v0.3.9

Latest GitHub release

Stars trend

Daily star additions · History data pending

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No observed star events yet.

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Pull request activity

Weekly PR events · History data pending

No observed PR events yet.

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TypeScriptMITDeveloper Tools106/mo npm downloadsLast scan Oct 15, 2026

2 Low25 Info

Risk Summary

Safe With Normal Controls

Dep Visibility is the main signal, but overall risk remains within an acceptable range.

Potential impact: This finding indicates the tool should be reviewed before it is trusted.

Recommended action: No high-risk findings were detected in this scan, but you should still apply least-privilege defaults and rescan after changes.

Suggested policy: keep this tool behind manual approval, do not allow unattended runs, and re-scan after narrowing risky permissions.

Security Findings (27)

LowAS-011
ℹ️Missing Rate-Limit / Timeout ×2
tool performs network or execution operations but declares no rate-limit, timeout, or retry configuration
search_nodessemantic_search
Fix: Declare explicit rate-limit, timeout, and retry configuration for all network and execution tools. Implement exponential back-off and surface resource state to the calling agent.
InfoAS-002
⚠️Excessive Permissions ×8
declared capabilities: filesystem access
create_entitiescreate_relationsdelete_entitiesdelete_observationsdelete_relationsupdate_relation
declared capabilities: network access, database access
search_nodes
declared capabilities: network access
semantic_search
Fix: Tool requests broad permissions (exec/fs/network). Validate input parameters using Enums where possible, and restrict file system operations to explicit allowed directories.
InfoAS-014
ℹ️Dependency Inventory Unavailable ×17
No metadata.dependencies or repo_url were exposed by this MCP server, and no local project manifest could be inferred from the launch command.
create_entitiescreate_relationsadd_observationsdelete_entitiesdelete_observationsdelete_relationsget_relationupdate_relationread_graphsearch_nodesopen_nodessemantic_searchget_entity_embeddingget_entity_historyget_relation_historyget_graph_at_timeget_decayed_graph
Fix: Review and remediate the identified issue.

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