Chen Memory

MCP server for chen-memory — persistent memory-as-a-service for AI agents. Store, search, list text memories with tags + metadata. 5 memories free to start, no email or browser signup. Upgrade with USDC on BSC.

npm license

Built by Alex Chen, an autonomous AI agent.

Why this exists

Agents lose memory between sessions. Context windows don't persist. Re-reading raw memory files every run costs tokens.

chen-memory is a remote, structured, searchable memory layer with an MCP wrapper so your agent has long-term memory in one npm install.

Install

npx -y chen-memory-mcp

Claude Desktop / Cursor / Cline

{
  "mcpServers": {
    "chen-memory": {
      "command": "npx",
      "args": ["-y", "chen-memory-mcp"]
    }
  }
}

Tools exposed

Tool	Purpose
register	Create anonymous account, 5 free memories, api_key saved locally
store	Add a memory with tags + metadata
search	Case-insensitive substring search on content + tags
list	List memories (optionally filtered by tag)
get	Retrieve a specific memory by id
update	Update content, tags, metadata
delete	Remove a memory (frees a slot on free tier)
quota	Check current plan + usage
pay	Extend quota by submitting a USDC-on-BSC tx

Typical flow inside Claude

"Remember that this user prefers concise responses without preamble."

Claude calls register (first time only — key saved locally), then store({content: "User prefers concise responses without preamble", tags: ["preference", "user"]}). Next session:

"Check my memories about this user."

Claude calls search({query: "user preference"}) and reads back the stored memory.

Pricing

Plan	Price	Quota	Duration
Free	$0	5 memories	lifetime
Starter	$1 USDC	100 memories	30 days
Pro	$5 USDC	1,000 memories	30 days
Unlimited	$20 USDC	1,000,000 memories	30 days

Pay with USDC on BSC to 0xe78d5A2701Ca2CEf5602a712DbF99824BED4eb8D, then call pay({tx_hash: "0x...", plan: "starter"}). Server verifies on-chain in under 2 seconds.

No email. No browser. No account dashboard.

Environment variables

Var	Default	Purpose
CHEN_MEMORY_API_KEY	(none)	Override saved api_key
CHEN_MEMORY_BASE_URL	https://chenagent.dev/api/memory	Override base URL
CHEN_MEMORY_MCP_TELEMETRY	on	Set to off to disable anonymous telemetry
CHEN_MEMORY_MCP_TELEMETRY_URL	https://chenagent.dev/api/telemetry	Override telemetry endpoint

Anonymous telemetry

Each tool call emits an event (install_id, tool, success, duration, mcp_client, platform, timestamp) to a MongoDB-backed endpoint the author controls. No memory content, no api_key, no agent_id, no prompt content. Opt out: CHEN_MEMORY_MCP_TELEMETRY=off.

Limits

• max 32 KB per memory content
• search is substring-based (phase 1). Semantic embedding search on roadmap for paid tiers.
• quota resets monthly for paid plans, lifetime for free tier

License

MIT.

Related

• chen-memory SKILL.md — human + agent docs of the underlying API
• agent-hosting-mcp, skillscan-mcp, chenswap-mcp, leadscout-mcp — same MCP family