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Memory Crystal MCP Server
Enables AI agents to maintain persistent memory across sessions by capturing conversations, extracting durable knowledge, and injecting relevant context, supporting various MCP-compatible platforms.
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// key findings
🚨
Secret credentials may flow to a network call
2 flows detected: MC_BOOTSTRAP_TOKEN, MC_TUNNEL_TELEMETRY_TOKEN. We can’t prove the destination matches the brand the credential belongs to.
🚨
Known vulnerabilities in dependencies: 1 critical
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
🔐
You'll be asked for 8 credentials: CRYSTAL_API_KEY, GEMINI_API_KEY, MC_BOOTSTRAP_TOKEN, MC_MCP_TOKEN, MC_TUNNEL_TELEMETRY_TOKEN, MEMORY_CRYSTAL_API_KEY, OPENAI_API_KEY, OPENROUTER_API_KEY
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// known CVEs in dependencies1 critical
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
When Vitest UI server is listening, arbitrary file can be read and executed
Depend on this server? Get alerted when its CVEs change.Watch this server free →
// required environment variables
This server reads these from
process.env. You'll be asked to provide them before it can run.config
CONVEX_URL— echo '=https://your-project-123.convex.cloud' > mcp-server/.env🔐 secret
CRYSTAL_API_KEYconfig
CRYSTAL_BACKENDconfig
CRYSTAL_BASE_URLconfig
CRYSTAL_CONVEX_URLconfig
CRYSTAL_EMAIL_DRY_RUNconfig
CRYSTAL_HTTP_INCLUDE_EMBEDDINGSconfig
CRYSTAL_MCP_HOSTconfig
CRYSTAL_MCP_HTTP_RATE_LIMIT_PER_MINUTEconfig
CRYSTAL_MCP_MODEconfig
CRYSTAL_MCP_PORTconfig
CRYSTAL_PUBLIC_WEB_URLconfig
CRYSTAL_TRACES_DISABLEDconfig
EMBEDDING_PROVIDER🔐 secret
GEMINI_API_KEY— Provider keys are intentionally split: MEMORY_CRYSTAL_API_KEY is client bearer auth, powers Gemini embeddings, and optional OPENROUTER_API_KEY powers organic model features.config
GEMINI_DAILY_CALL_CAPconfig
GLOBAL_ORGANIC_DAILY_SPEND_CAP_USD🔐 secret
MC_BOOTSTRAP_TOKENconfig
MC_BOOTSTRAP_URLconfig
MC_CLOUD_TELEMETRY_URLconfig
MC_DEPLOY_TARGETconfig
MC_DISABLE_MESSAGE_EMBED_SCHEDULEconfig
MC_EMBEDDING_DAILY_TOKEN_CAP_PER_USERconfig
MC_KB_PEER_STRICT🔐 secret
MC_MCP_TOKENconfig
MC_TENANT_IDconfig
MC_TENANT_SLUG🔐 secret
MC_TUNNEL_TELEMETRY_TOKENconfig
MC_VERSION🔐 secret
MEMORY_CRYSTAL_API_KEY— Provider keys are intentionally split: is client bearer auth, GEMINI_API_KEY powers Gemini embeddings, and optional OPENROUTER_API_KEY powers organic model features.config
MEMORY_CRYSTAL_API_URLconfig
MEMORY_CRYSTAL_BACKEND_URLconfig
MEMORY_CRYSTAL_LOCAL_CONVEX_URLconfig
OBSIDIAN_VAULT_PATHconfig
OLLAMA_BASE_URLconfig
OLLAMA_EMBEDDING_MODEL🔐 secret
OPENAI_API_KEY🔐 secret
OPENROUTER_API_KEY— Provider keys are intentionally split: MEMORY_CRYSTAL_API_KEY is client bearer auth, GEMINI_API_KEY powers Gemini embeddings, and optional powers organic model features.config
OPENROUTER_EMBEDDING_MODELconfig
ORGANIC_ENSEMBLE_PHASE2_ENABLEDconfig
SITE_URLconfig
VITEST// full audit trail
The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.
// improvement guidance — verified publishers only
We have 3 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
[](https://m8ven.ai/mcp/memorycrystal-memorycrystal-aahu44)commit: c68ff12b441010f8ba064539756a66191857bfa8
code hash: 92bb7ccc2d3fccdf2e074c5da7f7a9cafc4505230fa008a8fdfa3bdf6270f7f3
verified: 6/11/2026, 12:02:14 PM