Nexus Core (Noumenon-ai/nexus-core) is an MCP server listed on the M8ven Trust Index. M8ven has not graded it: we have no way to read this server ourselves. No publisher has claimed this listing.
A self-hostable, multi-MCP personal-assistant framework with multi-provider LLM orchestration, a real safety model, and a production-grade test suite. Nexus Core is the engine behind a Telegram-based personal assistant: it takes a message (text or voice), routes it through an LLM, lets the model call tools exposed by a fleet of Model Context Protocol servers, gates anything destructive behind exp
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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Noumenon-ai
Source: Glama
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Install from
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NEXUS_DISPATCHER_ENABLEDNEXUS_MCP_CONFIGNEXUS_GOOGLE_TOKEN_DIRNEXUS_MCP_DEFAULT_USER_IDNEXUS_GMAIL_TOKEN_DIRNEXUS_KNOWLEDGE_DBNEXUS_USER_2_UUIDNEXUS_USER_2_PROFILE_ROOTWA_BRIDGE_URLNEXUS_LOCAL_MEMORY_DBDATABASE_URLTool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
122/122 tools missing one or more hints — list_events (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); today_schedule (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); week_schedule (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +119 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Destructive tools are labelled
2 tools perform destructive updates without destructiveHint — write_text_file deletes at line 482 (os.unlink(tmp)); delete_file deletes at line 552 (os.remove(resolved))
Add destructiveHint:true to any tool whose handler calls .delete(), .upsert(), .update(), unlink, rm, DELETE, DROP, REPLACE INTO, or any operation that overwrites existing data.
Tool inputs are validated
120/122 tool handlers declare input schemas (98%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tool handlers catch errors
76/122 tool handlers wrap calls in try/catch (62%)
Wrap each tool handler body in try/catch and return a structured error response.
Tests exist
No test files found
Add tests that exercise each declared tool.
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