Atlas / MCP servers / stoneskin / open-memex

open-memexBLOCK

mcp/stoneskin/open-memex

Local-first memory layer for AI coding agents — Markdown as source of truth, MCP server + CLI, human-reviewed capture, team knowledge via git PRs.

Verdict
BLOCK
Grade
D
Trust score
62 /100
Exposed tools
11 9r · 2w · 0d
Transport
stdio
License
Apache-2.0
Stars
4
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

Persistent memory for your AI coding agents — on your machine, in plain Markdown, shared by every tool you code with.

[](https://www.npmjs.com/package/open-memex) [](./LICENSE) [](https://glama.ai/mcp/servers/stoneskin/open-memex)

中文文档

Every AI coding session starts from zero: you re-explain the project, the agent rediscovers the same gotchas, and yesterday's decisions vanish when the chat ends. open-memex gives your agents a memory that survives the session. Say "remember: we deploy on Fridays" once, and next week Copilot, Cursor, opencode, or Claude Code already knows — because they all read and write the same local memory on your machine.

  • Free and open source (Apache-2.0). No account, no cloud, no telemetry —

everything lives on your machine, in files you can open and edit.

  • Local-first: memories are plain Markdown files (the source of truth) with

a rebuildable SQLite keyword index. Nothing leaves your machine unless you explicitly share it.

  • One memory, every agent: wire up several editors with one command; they

share the same memory instead of keeping separate silos.

  • Precise synonym search: ship finds deploy, 单点登录 finds SSO —

a curated multilingual map of equivalents is indexed with every memory at write time, so no related wording misses the right answer. Deterministic and auditable, no embedding model required.

New here? This README takes you from install to a working memory in about a minute. The concept guide explains the mental model in depth once you're up and runn

Read from source at commit fe70a845cf10OBSERVED · 2026-10-11
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02

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control.

claude-code (npm)
claude mcp add open-memex -- npx -y [email protected] mcp
03

Exposed tools (11)

9 read · 2 write · 0 destructive.

ToolRiskDescription
memory_addwrite
memory_forgetread
memory_listread
memory_pr_statusread
memory_promoteread
memory_proposeread
memory_resolveread
memory_searchread
memory_statusread
memory_submitwrite
memory_supersederead
04

Trust audit

BLOCKgrade D · trust 62/100 Do not install this without reading the findings. The audit found something that could harm you or your machine.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codeFAIL
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfacePASS
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
declared (6 observation(s))
Network
declared (3 observation(s))
Shell
declared (3 observation(s))
Dependencies
not all pinned
Secrets in source
found

Findings (15)

CRITICALHard-coded secrets · secret.aws · CWE-798, CWE-321
scripts/smoke-pure.ts:165
["aws-access-key-id", "id=AKIA1234567890ABCDEF"],
CRITICALHard-coded secrets · secret.github · CWE-798, CWE-321
scripts/smoke-pure.ts:163
["github-oauth-token", "tok=gho_12345678901234567890123456789012"],
CRITICALHard-coded secrets · secret.github · CWE-798, CWE-321
scripts/smoke-pure.ts:164
["github-fine-grained-pat", "tok=github_pat_1234567890123456789012345678901234567890"],
CRITICALHard-coded secrets · secret.private_key · CWE-798, CWE-321
scripts/smoke-pure.ts:171
["private-key-block", "-----BEGIN RSA PRIVATE KEY-----\nQUJD\n-----END RSA PRIVATE KEY-----"],
CRITICALHard-coded secrets · secret.private_key · CWE-798, CWE-321
scripts/smoke-pure.ts:172
["private-key-truncated", "-----BEGIN RSA PRIVATE KEY-----"],
CRITICALHard-coded secrets · secret.slack · CWE-798, CWE-321
scripts/smoke-pure.ts:166
["slack-token", "tok=xoxb-123456789012-abcdefghij"],
HIGHCode injection · code.deserialize · CWE-78, CWE-94, CWE-95
src/store/markdown.ts:335
const rawFm = yaml.load(m[1]!) as Record<string, unknown>;
Why it matters. deserialises untrusted bytes into live objects
Fix. use json or yaml.safe_load
MEDIUMInformation disclosure · disclose.log_secret · CWE-209, CWE-532
src/cli.ts:906
console.log(`  secret hit:   ${r.hadSecret ? `yes (${r.matchedPattern}) — will be masked` : "no"}`);
MEDIUMInformation disclosure · disclose.log_secret · CWE-209, CWE-532
src/plugin-core.ts:99
console.log(`[open-memex] keyword capture masked secret (${matchedPattern})`);
MEDIUMHard-coded secrets · secret.generic · CWE-798, CWE-321
scripts/smoke-pure.ts:173
["generic-secret-assignment", 'password = "hunter2hunter2hunter2"'],
MEDIUMHard-coded secrets · secret.generic · CWE-798, CWE-321
scripts/smoke-pure.ts:262
const r11 = redact('api_key = "supersecretvalue123456"', []);
LOWFilesystem / path · fs.traversal · CWE-22, CWE-59
scripts/smoke-pure.ts:58
fs.writeFileSync(file, JSON.stringify({ memoryDir: "../../shared" }));
LOWSupply chain · supply.unpinned · CWE-829, CWE-1357
package.json
@modelcontextprotocol/sdk, better-sqlite3, js-yaml, zod, @opencode-ai/plugin, @types/better-sqlite3, @types/js-yaml, @types/node
Why it matters. 9 dependency range(s) float
Fix. pin exact versions or ship a lockfile
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
README.md:738
sync. The server also tells the agent on its own: at session start the
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
docs/V2-DESIGN.md:1090
retires. Now: session start, server-reported drafts, or explicit "sync
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine

Gates applied: critical_finding, no_behavioural_pass.

Audited 2026-10-11 · audit v0.4.1 · source sha fe70a845cf10full audit observations/trust-audit/mcp-server/stoneskin__open-memex.json · Report an issue / request a re-scan
05

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-11fe70a845cf10BLOCKD62first audit
06

Questions

What is the open-memex MCP server?

Local-first memory layer for AI coding agents — Markdown as source of truth, MCP server + CLI, human-reviewed capture, team knowledge via git PRs.

What tools does open-memex expose?

11 in total: 9 read-only, 2 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.

Is open-memex safe to connect to an agent?

No — not without reading the findings first. The audit graded it D (62/100) and found 7 critical or high issues in the source. Each one is listed on this page with the file and line it is on.

What credentials does open-memex need?

No credential environment variables were found in its source, so it appears to need none.

How does open-memex run?

It speaks stdio, so it runs as a local process your client starts. It is published on npm as open-memex at 0.8.1.

How current is this page?

The grade is for one exact copy of the source (fe70a845cf10), read on 2026-10-11. The repository is watched and re-audited when it changes.

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