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Tether MCP Server

by sidyellur Your server? Claim it
local only

Tether runs on your own machine — the client starts it, so there is no endpoint to ping. 81 installs a week from pypi. Last commit 12 Sep 2026.

Local-first agent memory over SQLite: remember, recall, link, forget. Degrades, never fails.

Installs per day peak 39 · avg 14 · -32% w/w
a month agotoday
81
Installs / week
pypi · tether-memory
1
Stars
4 open issues
12 Sep 2026
Last commit
from GitHub
MIT
License
Python

What the code does

We read the source, 2 d ago · rules 995398eba69f

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

    return os.path.isdir(os.path.join(cache_dir, repo_dir))

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add tether -- uvx tether-memory
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "tether": {
      "command": "uvx",
      "args": [
        "tether-memory"
      ]
    }
  }
}
~/.codex/config.toml
[mcp_servers.tether]
command = "uvx"
args = ["tether-memory"]
.cursor/mcp.json
{
  "mcpServers": {
    "tether": {
      "command": "uvx",
      "args": [
        "tether-memory"
      ]
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "tether": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "tether-memory"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: TETHER_DB (Path to the SQLite memory file. Defaults to the platform data dir (e.g. ~/.local/share/tether/memory.db)), TETHER_SEMANTIC (Set to 0 to force keyword-only recall. Semantic recall needs the [semantic] extra and is on by default when available), TETHER_SYNC_URL (Optional libSQL/Turso primary URL to sync memory across devices. Leave unset for local-only), TETHER_SYNC_TOKEN (Auth token for TETHER_SYNC_URL).

Alternatives to Tether

same job, measured the same way
Memkeeper
by teflon07

Local-first memory for AI agents: on-device hybrid retrieval over a single SQLite file.

local only
remem-mcp — Local-first MCP Memory + CodeGraph + Wiki
by tinhien11

Local-first memory for AI coding agents. Memory + CodeGraph + Wiki in one SQLite file.

123 installs/wk local only
Memory Kernel
by artem362

Local-first memory for AI agents: SQLite FTS5, deterministic recall, no vector DB, no cloud.

129 installs/wk local only
rmbr
by srock44

Embedded, local-first memory and retrieval for AI agents. One SQLite file, no server, no API key.

91 installs/wk local only
lean-memory
by wuesteon

Embedded, local-first agent memory: one SQLite file per namespace, no server, no cloud.

136 installs/wk local only
Palace
by ancientice

Local-first memory for coding agents — MCP server, single SQLite file, local embeddings

local only
Engram
by hbarefoot

Local-first persistent memory for AI agents — SQLite + local embeddings, MCP-native, no cloud.

53 installs/wk local only
skillmem
by liza-studio

Skill memory for coding agents: learn, recall, reinforce, decay. Local SQLite, no API key.

248 installs/wk local only

Tether — questions

Answers built from our own checks of this server.

Why is there no uptime for Tether?
Tether runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the pypi package tether-memory was installed 81 times last week.
How do I connect Tether?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls tether-memory straight from pypi; nothing to host, nothing to sign up for.
How many people use Tether?
The pypi package tether-memory was installed 81 times in the last week. Week over week that is -32%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Tether open source?
Yes — it is published under the MIT licence, written in Python, 1 stars on GitHub and 4 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.