Memory Hive

Apiary Memory MCP

Also known as: Apiary Memory · 记忆蜂巢 · Memory Hive · 蜂巢 · apiary-memory on PyPI and io.github.330899935/apiary-memory on the MCP Registry (from v0.2.0) · old names memory-hive-mcp / hive-memory (v0.1.9 and earlier) still install and still work. Not affiliated with hive.com (team collaboration) or the hive-mcp Claude Code plugin.

Local-first personal memory for AI agents, over MCP. Your agents can search what you have confirmed and propose what they think you should keep; only you can confirm it. Everything lives in one file on your own disk, and nothing is sent anywhere.

It runs on its own. A working SQLite memory store ships inside this package — no account, no cloud, no daemon, no dependencies.

pip install apiary-memory

Desktop app, no terminal: download apiary-memory-0.2.0.mcpb and double-click it.

Measured on 2026-10-27, on one MacBook with the Hive running locally — script and raw output in bench/:

Retrieval used each entry's own title as the query — an easy set. It shows the index is complete and ranks correctly on exact terms, not how well it answers a question asked in your own words. Run bench/bench_search.py on your own Hive.

What you get without the app

A complete, if modest, memory server. On a machine with nothing else installed:

Storage is SQLite at ~/.memory-hive/hive.db by default. Search is lexical — character bigrams for Chinese, words for Latin script — so it ranks well when the words overlap and finds nothing when they do not. There are no embeddings and no vector index. Every response says "mode": "local" so you can always tell which engine answered.

Without the app, the database is plain SQLite: it is not encrypted. That is stated here rather than discovered later — see Honest limits.

What the app adds

Apiary Memory for macOS is the same design with the expensive parts built: eight vaults with four of them locked behind a PIN (Argon2id-wrapped key, AES-256 at rest), a daily evolution log, multi-agent identity management, and a UI for reading and confirming. It also answers MCP itself, with richer ranking.

If the app is running, this package uses it and leaves the local file alone. If it is not, the local store answers. You do not have to choose up front:

One rule holds in every mode: if the app is running and answers with an error, that error is returned unchanged. Falling back on a refusal would write your memory into a second database while your client believed it had reached the app. Silent data forking is worse than an error message, so a reply from the app is final. The fallback fires on a connection failure, and on nothing else.

Install

pip install apiary-memory        # the server: apiary-memory (was apiary-memory)
                                 # the human's CLI: apiary-memory-cli (was apiary-memory-cli)

Python 3.8 or newer. There is nothing else to install — the package uses only the standard library, and sqlite3 is part of it.

From a checkout:

git clone https://github.com/330899935/apiary-memory
cd apiary-memory
PYTHONPATH=src python -m hive_mcp.stdio

Connect a client

Any MCP host that can run a stdio command will work. The minimum is the command; everything else is optional.

Claude Desktop — ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "apiary-memory": {
      "command": "apiary-memory",
      "env": { "HIVE_MODE": "local" }
    }
  }
}

Cursor — ~/.cursor/mcp.json, same mcpServers shape.

Any host that only speaks HTTP — start the app and point it at http://127.0.0.1:8768/mcp with the headers X-Hive-Agent and X-Hive-Token. This package is the stdio path; the HTTP endpoint belongs to the app.

Prerequisite

None, for the local store — install the package and it works. A running app is a prerequisite only for the app's own features: encrypted vaults, the evolution log, and multi-agent identity. If you want those, install the Hive app (macOS, version 1.4.5 or newer) and leave HIVE_MODE at auto.

The six tools

The six tools are the whole surface. They are the same six whether the app or the local store answers; only the ranking behind them differs — and, for two inputs, whether they exist at all. The app accepts precomputed embeddings (recall.query_vector, propose.vector); the local store has no embedder, so tools/list omits those two wherever the local store can answer, including under auto where the app might stop answering mid-session. A field that would be accepted and silently ignored is not advertised at all.

The same rule covers wording. recall.query is described as the lexical ranker it is wherever the local store can answer — words and character bigrams, no embeddings — and as the app's index-based ranking with query_vector for meaning wherever only the app can answer. A description is a claim about what will happen to the input, so it is narrowed with the inputs.

Defaults are not narrowed, they are shared. Omit limit and you get 10 from recall and 8 from get_context; omit compact and bodies come back trimmed; omit ttl on say and the card lives 24 hours. Both engines answer those numbers identically, because a default is a number in the schema rather than a capability one engine lacks. store.py holds each one as a named constant, and the tests compare the answer against the advertised number instead of a second hand-written copy of it.

Two properties are worth stating plainly, because they are the product:

• propose succeeding means "queued", not "stored". recall will not return it until a human confirms it.
• manage has no approve action. There is no path from an agent to a confirmed memory. That is not an omission; it is the design.

Response shapes

tools/list is one surface for both engines, and an answer should be too: a model that has to branch on which engine replied will eventually branch wrong. board therefore answers the app's shape, field for field — items, unread, count, cursor, reader — and cursor is the id of the newest card, the same kind of value the app returns.

The cursor is what a poll carries across an engine switch, which is why it gets the space. Under auto one call can be answered by the app and the next by the local store. Before 0.1.9 the local engine answered a float epoch timestamp and read the app's card id with float(), so a cursor fetched from the app came back as a full re-read of the board and nothing said so; a float sent the other way matched no card id, and the app answered with its newest limit, equally quietly.

A cursor can still fail to resolve: its card expired (cards live 24 hours by default), or it was issued by the other engine, whose ids are CB… in the app and msg_… here. Neither engine can resume from that, so both return the newest window — but this one also sets since_unknown and a note saying which of those happened. unread counts every live card after the cursor and count counts what the answer carries, so unread > count means the page did not cover everything waiting, and the note says so in words.

Three shapes are not unified, because the engines really do hold different data:

• a recall entry names its vault vault from the local store and wh from the app;
• get_context returns one flat digest locally and one bucket per warehouse (context, keyed by warehouse name) from the app;
• roster entries share agent_id; locally they also carry messages and last_seen, while the app adds its registry card — display name, seat, leases, current task — which a SQLite file has no way to know.

Confirming what agents propose

Agents propose. You confirm. The confirmation lives in a terminal, in a command you have to type — deliberately not a tool an agent can call.

apiary-memory-cli list                 # what is waiting
apiary-memory-cli show <id>            # read one in full
apiary-memory-cli approve <id>         # confirm it, or --all
apiary-memory-cli reject <id>          # drop it for good
apiary-memory-cli search "deploy key"  # search confirmed memory
apiary-memory-cli forget <id>          # soft delete, reversible
apiary-memory-cli restore <id>         # undo forget
apiary-memory-cli stats                # counts and the database path
apiary-memory-cli export --out dump.json
apiary-memory-cli path

--db <path> on any command points at a different database. HIVE_DB does the same from the environment.

Where your memory lives

~/.memory-hive/hive.db, unless HIVE_DB says otherwise. One SQLite file; copy it to back it up, delete it to start over.

The board keeps its messages in the same file, so there is only ever one thing to back up. Cards expire: 24 hours unless ttl says otherwise, clamped to between 60 seconds and 30 days, which is what the app does too — a board that grows forever stops being a board.

How search works, and what it does not do

Chinese text is indexed as single characters plus overlapping character bigrams; Latin text as words. A query is scored by how much of it the entry covers, then nudged by recency — a 10% multiplier, enough to break ties and not enough to overturn relevance.

This is a ranker, not an understander.

• Scores are relative. 0.8 means "closer than 0.4 for this query", not "80% confident". They are not comparable across queries.
• No semantic recall. Ask about "money" and an entry that only says "invoice" will not be found. Related-word coverage needs an embedder; this package has no dependencies and does not pretend otherwise.
• The ranking is the one the description states. tools/list says "words and character bigrams ... no embeddings" here, and that sentence is true of this engine. It is narrowed per engine like the embedding inputs are, because the app's answer to the same question differs.
• A miss is reported as a miss. When nothing matches, recall says so and mentions how many entries are awaiting confirmation, rather than returning a plausible neighbour.

Configuration

HIVE_AGENT_ID and HIVE_AGENT_TOKEN are not required to use the local store. They are read straight from the environment and never written to disk by this package.

Honest limits

Written down because a memory tool that oversells itself is worse than one that does less.

1. The local store is not encrypted. Plain SQLite. Anyone who can read your home directory can read it. The app's vaults are the encrypted option, and stats reports "encrypted": false instead of leaving you to find out.
2. No semantic search, as above.
3. One writer at a time. WAL mode lets the CLI confirm while a server is connected, but this is a personal memory file, not a multi-host service. Do not point two machines at one database over a network share.
4. The board is coordination, not memory. Messages are for hand-offs between agents; they are not searchable with recall.
5. The app is macOS only. The local store is not — it is pure Python.

Troubleshooting

"no confirmed memory matched this query" with entries pending. Correct behaviour. Confirm them: apiary-memory-cli list, then approve.

A call fails with a message about HIVE_AGENT_ID. The app answered and refused the credential. The call did not fall back to the local store, on purpose. Register an agent in the app and set both variables, or set HIVE_MODE=local if you meant to use the local file.

"Hive app not reachable ... and HIVE_MODE=remote forbids the local fallback". You asked for the app only and it is not running. Start it, or drop HIVE_MODE=remote.

Where did my memory go? apiary-memory-cli stats prints the database path. If HIVE_MODE is auto and the app is running, the app has been answering — the local file is untouched by design.

Development

PYTHONPATH=src python -m unittest discover -s tests -v

The suite needs no running app and no network: it stands up its own fake backend where a real response is required, and points HIVE_DB at a temporary file so a test never touches a real memory database.

Layout:

src/hive_mcp/store.py   the memory engine (SQLite, stdlib only)
src/hive_mcp/stdio.py   the MCP server: routing, envelopes, the app bridge
src/hive_mcp/cli.py     the human's half: review and confirm
src/hive_mcp/tools.json the tool surface snapshot for the offline path

License

MIT. Your memory file is yours; nothing here phones home.