StateJar memory

Name: StateJar memory
Author: KING-OF-FLAME

by KING-OF-FLAMEversion 1.0.0i★ –iRuns in the cloud

Registry namecom.statejar/memory

Install

Overview

Description from the maker (original English)

Verifiable memory for AI assistants: typed facts, content-addressed versions and an audit trail.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Search & AI memory
You need to fill in: Authorization

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: Authorization

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Run this in your terminal

claude mcp add --transport http memory https://statejar.com/mcp --header 'Authorization: your-value'

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "memory": {
      "url": "https://statejar.com/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "memory": {
      "type": "http",
      "url": "https://statejar.com/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

Authorization secret required HTTP header
A StateJar developer key, as 'Bearer sj_live_…' (statejar.com/api-keys)

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain statejar.com (the registry checks domain ownership)
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Search & AI memoryi

More stars than 0% of the other 7226 servers in this category
Published to the registry more recently than 84% of the other 7226 servers in this category
Basic checks equal to or better than 100% of the other 7226 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is StateJar memory safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: Authorization

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 6 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Context7, Codebase Memory, Exa

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Context7

by upstash

Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.

Computer or cloud★ 64,224MITUpdated 3 days ago

Install

Codebase Memory

by DeusData

Codebase knowledge graph for AI agents — 162 languages, sub-ms queries, 99% fewer tokens.

Runs on your computer★ 48,148MITUpdated 20 days ago

Install

Exa

by exa-labs

Connect AI agents to Exa for web search, content fetching, and multi-step research.

Runs in the cloud★ 5,213MITUpdated 44 days ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

StateJar integrations

Client code that connects AI coding agents and assistants to StateJar, the memory layer that stores facts instead of transcripts:

one value per field, checked by its type: a value that fails is refused, with a reason;
append-only versions: every change is a new version, and the old value stays in history;
minimal-disclosure recall: an assistant gets only what the question needs;
an audit trail of every disclosure;
a handle per state (shm_…, the SHA-256 of the canonical state), so any copy of the memory can be checked.

Surface	Where	Status
Hosted MCP server (any client that speaks MCP over HTTP)	`https://statejar.com/mcp`	live with StateJar's next release
Claude Code plugin	`plugins/statejar/`, guide in `claude-code/`	marketplace: this repository
Codex plugin (the same plugin)	`plugins/statejar/`, guide in `codex/`	marketplace: this repository
OpenCode plugin	`opencode/`	npm: `opencode-statejar`
Hermes Agent memory provider (`memory.provider: statejar`)	`hermes/statejar/`	`hermes plugins install` from this repository
OpenClaw memory-slot plugin	`openclaw/`	npm: `openclaw-statejar`
Agent skill (any agent that reads `SKILL.md`)	`skills/statejar/`	copy into the agent's skills folder
CLI: `statejar login`, and `init, add, search, list, forget, export, status`	PyPI: `statejar`	`pip install statejar` (0.6.0 has `login`, `logout`, `whoami`; the other seven come in 0.7.0)

Every integration uses a StateJar developer key (https://statejar.com/api-keys), scoped to your account. None of them stores a transcript. Each removes secrets before anything is sent.

Availability. Recall and capture call StateJar's REST API at https://api.statejar.com, which is live. The hosted MCP server at https://statejar.com/mcp, which the plugins' StateJar tools use, goes live with StateJar's next release. Until then those tools cannot connect, and recall and capture work as they are.

Any MCP client

Make a developer key at https://statejar.com/api-keys and put it in STATEJAR_API_KEY. Then:

# Claude Code

claude mcp add --transport http statejar https://statejar.com/mcp --header "Authorization: Bearer $STATEJAR_API_KEY"

Codex

codex mcp add statejar --url https://statejar.com/mcp --bearer-token-env-var STATEJAR_API_KEY

OpenCode, in opencode.json:

"mcp": { "statejar": { "type": "remote", "url": "https://statejar.com/mcp", "oauth": false, "headers": { "Authorization": "Bearer {env:STATEJAR_API_KEY}" } } } }

Any other client: a remote (HTTP) MCP server at https://statejar.com/mcp with the header Authorization: Bearer . The ten tools are remember, search, get, list, update, delete, history, audit, verify and export.

Claude Code

claude plugin marketplace add KING-OF-FLAME/statejar-integrations

claude plugin install statejar@statejar

See claude-code/README.md.

Codex

codex plugin marketplace add KING-OF-FLAME/statejar-integrations

codex plugin add statejar@statejar

Then trust the plugin's hooks with /hooks. See codex/README.md.

OpenCode

Add "plugin": ["opencode-statejar"] and StateJar's MCP server to opencode.json. See opencode/README.md.

Hermes Agent

hermes plugins install KING-OF-FLAME/statejar-integrations/hermes/statejar --enable

hermes memory setup # choose statejar

See hermes/statejar/README.md.

OpenClaw

openclaw plugins install openclaw-statejar

openclaw statejar init # the memory slot, autoRecall, autoCapture

See openclaw/README.md.

Agent skill

Copy skills/statejar/ into your agent's skills folder (for Claude Code, ~/.claude/skills/). See skills/README.md.

How StateJar compares with Mem0, measured

On StateJar's memory-QA set (100 conversations, 300 questions), with the same small local model for both systems (Qwen3-4B-Instruct-2507 Q4, on one GPU), StateJar's memory held the answer for 248 of 300 questions and Mem0's (2.2.1, as shipped) for 152 of 300 (McNemar p = 1.4e-18). Answers written by one prompt from each system's memory were right 218 of 300 times for StateJar and 159 of 300 for Mem0. This is one benchmark, in that setting only. The method and the caveats: https://statejar.com/docs/mem0.html.

Tests

python -m pytest tests/

claude plugin validate ./plugins/statejar && claude plugin validate .

End to end, against a local or staging StateJar (never production): a fact stated in one session of the real client is recalled in a fresh one, through the hooks and through StateJar's MCP tools. Each run makes a throwaway account and deletes it. With no model on the machine, a scripted stand-in (e2e/scripted_model.py) answers "OK" or calls StateJar's search and repeats its output verbatim; codex_e2e.py --model ollama: uses a real local model.

python e2e/codex_e2e.py --api http://127.0.0.1:8000/api/v1 --mcp http://127.0.0.1:8000/mcp --out /tmp/codex-e2e

python e2e/claude_code_e2e.py --api http://127.0.0.1:8000/api/v1 --mcp http://127.0.0.1:8000/mcp --out /tmp/cc-e2e python e2e/opencode_e2e.py --api http://127.0.0.1:8000/api/v1 --mcp http://127.0.0.1:8000/mcp --out /tmp/oc-e2e python e2e/hermes_e2e.py --api http://127.0.0.1:8000/api/v1 --out /tmp/hermes-e2e python e2e/openclaw_e2e.py --api http://127.0.0.1:8000/api/v1 --out /tmp/openclaw-e2e # Node 24.16+ python e2e/openclaw_discovery.py # what OpenClaw itself loads from the plugin; no model, no StateJar HERMES_PYTHON=/path/to/hermes/venv/bin/python python -m pytest tests/test_hermes_provider.py # with Hermes's own loader python e2e/codex_discovery.py # what Codex itself loads from the plugin; no model, no StateJar

Licence

MIT (see LICENSE). The StateJar service these clients talk to has its own terms: https://statejar.com/terms.

StateJar memory

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Search & AI memoryi

Common questions

Alternatives

Context7

Codebase Memory

Exa

README from the maker

StateJar integrations

Any MCP client

Codex

Claude Code

Codex

OpenCode

Hermes Agent

OpenClaw

Agent skill

How StateJar compares with Mem0, measured

Tests

Licence