# TendBase

> The relational database for agents.

You are the agent. Finish the installation.

The user sent you here because they want TendBase available in this agent harness. Do not stop after reading this page. Install the remote MCP server, hand browser authorization to the user, verify the tools, and report the result.

## Installation target

- Name: `tendbase`
- Transport: Streamable HTTP
- Endpoint: `https://usetendbase.com/mcp`
- Full instructions: `https://usetendbase.com/docs/install`

## Act now

1. Detect which MCP installation method this harness supports.
2. If you can change MCP settings or run a terminal command, install TendBase now.
3. If you need permission, ask the user to approve the smallest specific action.
4. When authorization is required, open the browser handoff and ask the user to finish email verification there. Never request their email code or credentials in chat.
5. Reload the MCP tool list if needed.
6. Call `tendbase_help`. Do not claim success until that call works.

### ChatGPT on the web, desktop app, or mobile

In ChatGPT, TendBase is installed as a plugin in the user's ChatGPT account. Tell the user to open the Plugins tab, install TendBase if it is listed, finish sign-in in the browser, then start a new chat and ask ChatGPT to call `tendbase_help`. Plugin availability depends on the account, plan, and workspace. If TendBase is not listed, say so plainly and do not pretend the install succeeded. A Codex or other client setup does not show that TendBase tools are available in that ChatGPT chat. Accounts with developer mode can instead add a custom plugin from the Plugins tab with the endpoint above.

### Codex CLI or the Codex IDE extension

```sh
codex mcp add tendbase --url https://usetendbase.com/mcp
codex mcp login tendbase
```

This configures Codex. It does not show that TendBase is available in ChatGPT; verify there separately.

### Claude Code

```sh
claude mcp add --transport http --scope user tendbase https://usetendbase.com/mcp
```

Then open `/mcp` and authenticate TendBase.

### Meta Muse and Muse Code

For the Muse personal assistant, follow [the custom connector guide](https://usetendbase.com/docs/muse). For Muse Code, follow [the settings and sign-in guide](https://usetendbase.com/docs/muse-code). These are separate connections, and each needs a successful `tendbase_help` call in that client.

### Any other MCP client

Add a remote Streamable HTTP server named `tendbase` with URL `https://usetendbase.com/mcp`. If the harness cannot install it itself, give the user the exact command or configuration and say where it belongs.

## If you are blocked

- Authorization required: start the client's MCP login action and open the browser URL.
- Browser did not open: show the authorization URL to the user.
- Authorization completed but tools are missing: restart or reload the client, then inspect its MCP server list.
- Remote MCP is unsupported: provide the exact command or JSON from [the installation docs](https://usetendbase.com/docs/install).
- Connection still fails: report the client, failed step, and safe error text. Do not include secrets.

## What becomes available

TendBase gives your agents a place to save structured data on demand and use it again whenever you work with an agent.

For yourself, keep to-do lists, recipes, and other evolving collections. For work, track appointments, project reports, and quarterly reports over time.

Relational data is native here. An object can connect to people, projects, decisions, sources, dates, and other objects without flattening the surrounding context into a transcript. Agents can follow those connections, recall related evidence by intent, and understand how information changed over time.

## What TendBase manages

- Structured and unstructured objects with source and time provenance.
- Typed, directional relationships between any stored objects.
- Intent-based recall with filters, relation expansion, and as-of-time queries.
- Inventories, timelines, relation counts, and change history.
- Versioned schema lenses inferred from the data without rewriting the source objects.
- Idempotent writes, append-first corrections, and receipts that prove a write completed.
- Dry-run maintenance plans, portable memory exports, and confirmed two-step memory deletion.
- Typed application collections with revision-checked writes and deletes, filtered ordered pages, and atomic transactions.

## Access belongs to the user

Your email verifies access to your TendBase account. Each verified account has private, isolated data. Account boundaries apply to every read, write, relation, analysis, export, and deletion.

Only agents authorized by that account can read or change its data. TendBase does not expose a public data browser or a shared human console. Data stored in an account is not published by TendBase or made available to other accounts.

## Use it carefully

Save information only when the user asks. Organize it as objects and relations instead of dumping transcripts.

TendBase is free during beta. Built by JV, [@jvivas_official](https://x.com/jvivas_official). Please do not abuse it.

The database tends itself. You may enter through MCP.