ChainMemory

io.github.chaelynet/chainmemoryv2.7.0Memory & RAG

Persistent cross-model memory for AI agents: verifiable, portable, client-side encrypted.

The current version, v2.7.0, was published to the official MCP registry on 2026-09-13. It is distributed as chainmemory-mcp on npm, filed under Memory & RAG by this index, and declares 5 environment variables. Removals and unreachable sources are measured across every server this index tracks, contract drift across the servers that answer in consecutive snapshots; the index's current counts put this record in context.

In-path gate · all MCP tools

Using ChainMemory in Claude, Cursor, Gemini CLI, Cline, or Zed?

MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).

Install the mcpindex gate (one command)

Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less

uv tool install mcpindex-gate && mcpindex-config-wire

Auditable install path →Watch it hold a drift →

Trust verdict · v1 advisory · method

REVIEWstatus: PARTIALfresh until 2026-10-12 19:05 UTC

screened 2026-09-12tier: scannedgranularity: description-levelsource: registry

Semantic screen found no manipulation pattern in the description. Conformance probe not yet run.

mcpindex.integrity.descriptionpassINFO

evidence“Normal capability description”via static_description

Limits of this verdict

- Semantic screen only - the deterministic conformance probe has not run on this server
- Confidence is reported but not yet calibrated (v1)
- Screen reads the tool description, not the live behavior
- advisory
- registry description only no input schema
- screen model 8b
- The registry listing (version, packages, links) changed after this screen ran - the description we assessed did not

Semantic screen: an LLM judge reads the tool description for hidden instructions (status PARTIAL). A pass means the description is not lying, not that the tool is safe: a high-capability tool with an honest description still warrants caution. The deterministic conformance probe has not been run on this server yet, so the screen here is semantic-only. Posture: advisory. Confidences are reported but not yet calibrated (calibrated=false at v1). Full verdict history is not shown on this page.

Own this server? Screen its description →

That verdict was true at screening time (snapshot 2026-09-14).

Contracts can change after screening, with no version bump. The gate pins ChainMemory’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.

See your first HOLD in 2 minutes →

Cite this record

People vet a server before wiring it in. One line on your project site or docs answers that with an independent record: screening verdict, registry provenance, contract drift history. It stays current as new screens and drift events land.

Markdown

[Independent trust record for ChainMemory](https://mcpindex.ai/server/io-github-chaelynet-chainmemory) - screening verdict, registry provenance, and contract drift monitoring.

HTML

<a href="https://mcpindex.ai/server/io-github-chaelynet-chainmemory">Independent trust record for ChainMemory</a> - screening verdict, registry provenance, and contract drift monitoring.

Embed this badge

A live verdict badge for your README or listing. It reflects the current screen, links back here, and updates when the verdict does.

Markdown

[![mcpindex](https://mcpindex.ai/api/v1/badge/io-github-chaelynet-chainmemory)](https://mcpindex.ai/server/io-github-chaelynet-chainmemory)

HTML

<a href="https://mcpindex.ai/server/io-github-chaelynet-chainmemory"><img src="https://mcpindex.ai/api/v1/badge/io-github-chaelynet-chainmemory" alt="mcpindex verdict" height="20" /></a>

Environment variables

CHAINMEMORY_API_KEY

requiredsecret

ChainMemory API key. REQUIRED for every tool except chainmemory_seal. Get one at https://faucet.chainmemory.ai

CHAINMEMORY_SEED_PHRASE

secret

12-word BIP-39 phrase for the blind vault. Optional: without it the server works exactly as before, but sealed:true is unavailable. Generate one with chainmemory_new_seed. It never leaves your machine and cannot be recovered.

CHAINMEMORY_API_BASE

API base URL (default: https://api.chainmemory.ai)

AICHAIN_KEY

secret

NOT NEEDED for normal use — leave it empty. Only the chainmemory_seal tool reads it, to sign a contract call yourself instead of letting the API anchor the memory (which chainmemory_remember already does). If you do set it, it is a wallet private key: use a dedicated wallet holding only a few AIC, never your main one. No other tool uses it.

AICHAIN_RPC

RPC endpoint used only by chainmemory_seal (default: https://rpc.chainmemory.ai). Leave it empty unless you set AICHAIN_KEY.

MCP quality score · maturity, not trust · methodology

freshness

completeness

installability

documentation

stability

Alternatives in Memory & RAG

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ai.fodda/mcp-server

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Achriom

com.achriom/achriom

Media memory for AI agents and their humans: books, movies, music, shows, anime, podcasts, games.

io.github.chenxiaofie/memory-mcp

情景+实体记忆 MCP 服务，为 Claude Code 提供持久化记忆能力

Install this server

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "chainmemory": {
      "command": "npx",
      "args": [
        "-y",
        "--",
        "chainmemory-mcp"
      ],
      "env": {
        "CHAINMEMORY_API_KEY": "<your-chainmemory_api_key>",
        "CHAINMEMORY_SEED_PHRASE": "<your-chainmemory_seed_phrase>",
        "CHAINMEMORY_API_BASE": "<chainmemory_api_base>",
        "AICHAIN_KEY": "<your-aichain_key>",
        "AICHAIN_RPC": "<aichain_rpc>"
      }
    }
  }
}

Cursor (.cursor/mcp.json)

{
  "mcpServers": {
    "chainmemory": {
      "command": "npx",
      "args": [
        "-y",
        "--",
        "chainmemory-mcp"
      ],
      "env": {
        "CHAINMEMORY_API_KEY": "<your-chainmemory_api_key>",
        "CHAINMEMORY_SEED_PHRASE": "<your-chainmemory_seed_phrase>",
        "CHAINMEMORY_API_BASE": "<chainmemory_api_base>",
        "AICHAIN_KEY": "<your-aichain_key>",
        "AICHAIN_RPC": "<aichain_rpc>"
      }
    }
  }
}

Cline (cline_mcp_settings.json)

npx -y -- chainmemory-mcp

Claude Code (claude mcp add)

claude mcp add --scope user chainmemory -- npx -y -- chainmemory-mcp

Gemini CLI (gemini mcp add)

gemini mcp add -s user chainmemory npx -y -- chainmemory-mcp

Verdict API

curl -s mcpindex.ai/api/v1/trust/server/io-github-chaelynet-chainmemory

Free-tier verdict as JSON: decision + dimensions + severity. Call it from your agent before it invokes a tool it just discovered.

Details

version: v2.7.0
category: Memory & RAG
verdict expires: 2026-10-12
quality: 100 / 100
operator: chaelynet

Listing

Listed from the official MCP registry. Unclaimed by its maintainer. Maintainer? Email us →

Provenance

Each verdict is bound to a hash of the exact description it judged, so a re-crawl that changes the text produces a new record rather than silently inheriting this one. Verdict history is hash-chained and anchored to Bitcoin via OpenTimestamps (latest confirmed at block 966,775). Verify it yourself.

Links

Repository →Website →