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Auxilian is a free service that gives you real Postgres storage you can shape in plain language. Ask Claude to design a table for your reading list, import a batch of leads, or clean up last week’s records, and the change lands in a database you own. Open the web app to see exactly what changed, edit rows by hand, share a project with a teammate, or export a table to CSV. Auxilian has two surfaces over the same data: Both surfaces enforce the same permissions, limits, and validation, and every change from either one is recorded in the project’s activity log.

Quickstart

Sign in, create a project, and connect Claude in about five minutes.

Core concepts

Workspaces, projects, tables, rows, and who can do what.

Connect Claude

Add Auxilian as a custom connector in Claude.

MCP tool reference

Every tool Claude can call, with parameters and examples.

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What you can build

Each project is its own Postgres schema. Tables use a small set of column types (text, integer, numeric, boolean, timestamptz, uuid, jsonb), and tables can reference each other with foreign keys. That is enough for most personal and small-team data:
  • A CRM with companies, contacts, and deals linked by foreign keys
  • A content calendar that Claude keeps up to date as you plan
  • A research log where Claude records sources, quotes, and tags as jsonb
  • A shared inventory that teammates update in the web app while Claude answers questions about it

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How it fits together

1

You sign in with Google

Auxilian creates a personal workspace for you on first sign-in.
2

You create a project

A project is an isolated Postgres database schema inside a workspace.
3

You connect an AI assistant

You add the MCP server URL to Claude and approve access. Claude then acts as you, with your permissions.
4

You and Claude shape the data

Claude creates tables and writes rows through MCP tools. You review, edit, and share in the web app.
Auxilian is free. Usage limits keep it that way. See Limits and quotas for the numbers.