Memori

Persistent AI memory for any MCP-compatible agent — no SDK required.

memori-mcp is the official Memori MCP server. Connect it to your AI agent to give it long-term memory: recall relevant facts, retrieve broad state summaries, restore working state after context compaction, store durable preferences after responding, and maintain context across sessions.

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Why Memori MCP?

Memori turns stateless agents into stateful systems by providing structured, persistent memory that works across sessions and workflows.

1. Persistent state beyond prompts — Most agents rely on prompt context and lose state between runs. Memori provides durable, structured memory so agents can retain facts, decisions, and outcomes over time.
2. Memory from execution (not just natural language) — Traditional systems extract memory from chat. Memori builds memory from agent execution itself — including tool calls, decisions, and results. This enables true agent-native memory, not just conversational recall.
3. Lower cost, higher accuracy — Instead of expanding prompt context, Memori retrieves only what matters.
   • Significantly reduced token usage
   • Faster responses
   • Improved accuracy vs long-context approaches
4. Works with any MCP client and production-ready - No SDK, no code changes, just config

Memori is state infrastructure for production agents — enabling persistent memory, efficient retrieval, and structured context across both natural language and agent execution.

LoCoMo Benchmark

Memori was evaluated on the LoCoMo benchmark for long-conversation memory and achieved 81.95% overall accuracy while using an average of 1,294 tokens per query. That is just 4.97% of the full-context footprint, showing that structured memory can preserve reasoning quality without forcing large prompts into every request.

Compared with other retrieval-based memory systems, Memori outperformed Zep, LangMem, and Mem0 while reducing prompt size by roughly 67% vs. Zep and lowering context cost by more than 20x vs. full-context prompting.

Read the benchmark overview or download the paper.

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How It Works

The server exposes seven tools:

Tool	When to call	What it does
memori_recall	Start of each user turn	Fetches relevant memories at the start of a user turn
memori_recall_summary	Session starts, daily briefs, status updates, project overviews	Fetches broad memory state for session starts, daily briefs, status updates, and project overviews
memori_compaction	After context compaction	Fetches a structured post-compaction brief so an agent can resume operational work
memori_advanced_augmentation	After composing a response	Stores durable memory after the agent has drafted a response
memori_feedback	When the user flags a memory issue or praises a result	Reports irrelevant, missing, stale, or especially useful memory behavior
memori_signup	When the user explicitly asks and provides an email	Requests a Memori account/API key when the user explicitly asks
memori_quota	When the user asks about usage or quota errors appear	Checks current memory usage and limits when the user asks or quota errors appear

Example Agent Flow

Given the user message: "I prefer Python and use uv for dependency management."

1. Agent calls memori_recall with the user message as query
2. Agent composes a response using any returned facts
3. Agent sends the response to the user
4. Agent calls memori_advanced_augmentation with the user_message and assistant_response

On a later turn like "Write a hello world script", the agent recalls the Python + uv preference and personalizes its response.

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Prerequisites

• A Memori API key from app.memorilabs.ai
• An entity_id to identify the end user (e.g. user_123)
• An optional process_id to identify the agent or workflow (e.g. my_agent)

Export these in your shell or replace the placeholders directly in your config:

export MEMORI_API_KEY="your-memori-api-key"
export MEMORI_ENTITY_ID="user_123"
export MEMORI_PROCESS_ID="my_agent"   # optional

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Server Details

Property	Value
Server	Memori MCP
Endpoint	https://api.memorilabs.ai/mcp/
Transport	Stateless HTTP
Auth	API key via request headers

Headers

Header	Required	Description
X-Memori-API-Key	Yes	Your Memori API key from app.memorilabs.ai
X-Memori-Entity-Id	Yes	Stable end-user or entity identifier (e.g. user_123)
X-Memori-Process-Id	No	Optional process, app, or workflow identifier (e.g. my_agent) for memory isolation

session_id is derived automatically as <entity_id>-<UTC year-month-day:hour>. You do not need to provide it.

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Verifying the Connection

After configuring your client, verify the setup:

• MCP server shows as connected and healthy in your client UI
• Tools list includes memori_recall, memori_recall_summary, memori_compaction, and memori_advanced_augmentation
• Calls return non-401 responses
• memori_recall returns memories for known entities
• memori_advanced_augmentation accepts durable user/assistant turn data

If you receive 401 errors, double-check your X-Memori-API-Key value. See the Troubleshooting guide for more help.

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Links

• Memori Cloud
• Get an API key
• MCP Overview docs
• Client Setup docs
• Agent Skills docs