Catalogian

official

Give your AI access to CSVs and their history. Catalogian tracks every version, finds changes between imports, and makes your data searchable through MCP.

View on catalogian.com

What can you do with Catalogian MCP?

  • Create a record from a link or file — Paste a URL or drop a CSV, TSV, or JSONL file and get back a record with rows counted and columns named.
  • Query a record from your LLM — Copy a record's MCP URL into Claude, ChatGPT, or Cursor so the assistant can call its read-only tools against the data.
  • Track changes to a kept record — Keep a record and Catalogian checks its source on a schedule, versions each ingest, and reports what changed.
  • Receive deltas outside MCP — Delta events can travel out over the REST API or webhooks in addition to MCP.
  • Control ingestion cadence — Pause the schedule, overwrite your file, trigger a check, or pull the delta for a record.

Hosted MCP Server

npx add-mcp 'https://api.catalogian.com/v1/mcp'

Installs into Claude Code, Codex, Cursor and more

Documentation

Documentation

Catalogian turns a data link or file into a record your LLM can question. Paste a URL or drop a CSV, TSV, or JSONL file and a record comes back in seconds, anonymous to start, nothing kept until you keep it. When you keep a record, Catalogian watches it for changes and every delta can travel out over MCP, the REST API, or webhooks.

Quick Start: make your first record

Paste a URL or drop a file on the homepage. The card flips and your record exists, no account needed.

Connect your LLM over MCP

Every record ships an MCP server: 18 read-only tools your LLM can call. Claude, ChatGPT, and Cursor.

How it works

01

Make a record

Paste a link or drop a file on the homepage. Catalogian reads it on arrival: rows counted, columns named, a record on the card's back.

02

Ask your LLM

Copy the record's MCP URL into Claude, ChatGPT, or Cursor. Your LLM can call 18 read-only tools against the record.

03

Keep it to watch it

Sign up to claim the record. A kept record checks its source on a schedule, versions every ingest, and reports exactly what changed.

Explore the docs

Core Concepts

Records, sessions, snapshots, deltas, and the sample.

Source Types

Paste a URL, drop a file, or point at an authenticated URL.

Pipeline Ingestion

Own the cadence: pause the schedule, overwrite your file, trigger the check, pull the delta.

Delta Events

What changed: counts, keys, and history windows.

API Reference

REST endpoints, auth, pagination.

Webhooks

Delta events delivered to your endpoint.

Plans & Limits

Free, watch, max: the per-record ladder.

Ready to start?

Drop a link on the homepage and a record comes back. No credit card required.