mem0

name	mem0
description	Mem0 SDK reference covering Python and TypeScript APIs, memory client methods, configuration, and framework integrations. Use when writing code that calls mem0 APIs, configuring memory providers, or integrating mem0 into an application.
license	Apache-2.0
metadata	{"author":"mem0ai","version":"0.1.1","category":"ai-memory","tags":"memory, personalization, ai, python, typescript, vector-search"}
compatibility	Requires Python 3.10+ or Node.js 18+, pip install mem0ai or npm install mem0ai, MEM0_API_KEY env var (Platform), and internet access to api.mem0.ai. Uses Mem0 v3 API.

Mem0 Platform Integration

Skill Graph: This skill is part of the Mem0 skill graph:

• mem0 (this skill) -- Platform Client SDK + OSS (Python + TypeScript)
• mem0-vercel-ai-sdk -- Vercel AI SDK provider

Mem0 is a managed memory layer for AI applications. It stores, retrieves, and manages user memories via API — no infrastructure to deploy. For self-hosted usage, see the OSS section in the client references below.

Step 1: Install and authenticate

Python:

pip install mem0ai
export MEM0_API_KEY="m0-your-api-key"

TypeScript/JavaScript:

npm install mem0ai
export MEM0_API_KEY="m0-your-api-key"

Get an API key at: https://app.mem0.ai/dashboard/api-keys?utm_source=oss&utm_medium=mem0-plugin-skill

Don't have a MEM0_API_KEY? Sign up at https://app.mem0.ai and create one from the dashboard. Keys start with m0-.

Step 2: Initialize the client

Python:

from mem0 import MemoryClient
client = MemoryClient(api_key="m0-xxx")

TypeScript:

import MemoryClient from 'mem0ai';
const client = new MemoryClient({ apiKey: 'm0-xxx' });

For async Python, use AsyncMemoryClient.

Step 3: Core operations

Every Mem0 integration follows the same pattern: retrieve → generate → store.

Add memories

messages = [
    {"role": "user", "content": "I'm a vegetarian and allergic to nuts."},
    {"role": "assistant", "content": "Got it! I'll remember that."}
]
client.add(messages, user_id="alice")

Search memories

results = client.search("dietary preferences", filters={"user_id": "alice"})
for mem in results.get("results", []):
    print(mem["memory"])

Get all memories

all_memories = client.get_all(filters={"user_id": "alice"})

Update a memory

client.update("memory-uuid", text="Updated: vegetarian, nut allergy, prefers organic")

Delete a memory

client.delete("memory-uuid")
client.delete_all(user_id="alice")  # delete all for a user

Common integration pattern

from mem0 import MemoryClient
from openai import OpenAI

mem0 = MemoryClient()
openai = OpenAI()

def chat(user_input: str, user_id: str) -> str:
    # 1. Retrieve relevant memories
    memories = mem0.search(user_input, filters={"user_id": user_id})
    context = "\n".join([m["memory"] for m in memories.get("results", [])])

    # 2. Generate response with memory context
    response = openai.chat.completions.create(
        model="gpt-5-mini",
        messages=[
            {"role": "system", "content": f"User context:\n{context}"},
            {"role": "user", "content": user_input},
        ]
    )
    reply = response.choices[0].message.content

    # 3. Store interaction for future context
    mem0.add(
        [{"role": "user", "content": user_input}, {"role": "assistant", "content": reply}],
        user_id=user_id
    )
    return reply

Common edge cases

• Search returns empty: v3 processes add() asynchronously — returns an event ID immediately. Wait 2-3s before searching. Also verify user_id matches exactly (case-sensitive) and use filters={"user_id": "..."} syntax.
• AND filter with user_id + agent_id returns empty: Entities are stored separately. {"AND": [{"user_id": "alice"}, {"agent_id": "bot"}]} returns nothing. Use OR instead, or query each separately.
• Duplicate memories: Don't mix infer=True (default) and infer=False for the same data. infer=True extracts facts via LLM with dedup. infer=False stores raw — same text can be stored twice.
• Implicit null scoping: filters={"user_id": "alice"} only returns memories where agent_id, app_id, run_id are ALL null. Wrap in {"OR": [...]} to include memories with non-null scoping fields.
• Platform vs OSS imports: Platform: from mem0 import MemoryClient. OSS: from mem0 import Memory. Don't mix them — MemoryClient talks to api.mem0.ai, Memory runs locally.
• v3 defaults: top_k=20, threshold=0.1, rerank=False. Adjust as needed.

v3 API (Current)

Mem0 v3 uses single-pass extraction, entity linking, and multi-signal retrieval.

Key v3 changes from v2:

• Endpoints: POST /v3/memories/add/, POST /v3/memories/search/, POST /v3/memories/ (paginated list)
• Extraction: Single ADD-only pass — no more UPDATE/DELETE operations during extraction. Memories accumulate rather than consolidate.
• Entity linking: Replaces graph memory. Auto-extracted during add(), no config needed. Remove enable_graph and graph_store from any old config.
• Defaults: top_k=20, threshold=0.1, rerank=False
• Removed params: org_id, project_id, enable_graph — all removed from SDK
• TypeScript: Exclusively camelCase (userId, agentId, appId, topK)
• Add response: Async — returns event ID immediately, poll via GET /v1/event/{event_id}/

See the migration guide for details.

Live documentation search

For the latest docs beyond what's in the references, use the doc search tool:

bun ${CLAUDE_SKILL_DIR}/scripts/mem0_doc_search.ts --query "topic"
bun ${CLAUDE_SKILL_DIR}/scripts/mem0_doc_search.ts --page "/platform/features/graph-memory"
bun ${CLAUDE_SKILL_DIR}/scripts/mem0_doc_search.ts --index

No API key needed — searches docs.mem0.ai directly.

Client SDK References

Language-specific deep references (Platform + OSS):

Language	File
Python (MemoryClient + AsyncMemoryClient + Memory OSS)	client/python.md
TypeScript/Node.js (MemoryClient + Memory OSS)	client/node.md
Python vs TypeScript differences	client/differences.md

Platform References

Load these on demand for deeper detail:

Topic	File
Quickstart (Python, TS, cURL)	references/quickstart.md
SDK guide (all methods, both languages)	references/sdk-guide.md
API reference (endpoints, filters, object schema)	references/api-reference.md
Architecture (pipeline, lifecycle, scoping, performance)	references/architecture.md
Platform features (retrieval, graph, categories, MCP, etc.)	references/features.md
Framework integrations (LangChain, CrewAI, OpenAI Agents, etc.)	references/integration-patterns.md
Use cases & examples (real-world patterns with code)	references/use-cases.md

Related Mem0 Skills

Skill	When to use	Link
mem0-vercel-ai-sdk	Vercel AI SDK provider with automatic memory	GitHub

Output formatting

IMPORTANT: Do NOT use markdown in your output. OpenCode TUI renders text verbatim — markdown like bold, ## headers, and | table | syntax appears as raw characters. Use plain text with indentation for structure. Use dashes for lists. Use spaces to align columns instead of markdown tables.