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DataBridge

The intelligent database layer for AI agents

Open-source MCP server that gives AI agents safe, reliable access to any database — PostgreSQL, MongoDB, SQLite, DuckDB — with cross-database joins, deterministic safety enforcement, and benchmark-proven accuracy.

The problem

AI agents can read your database. They also fail silently.

Connect Claude or GPT to a Postgres URL and three things go wrong in the first week — every time:

Wrong joins return zero rows — silently

The agent guesses the foreign key, the join produces nothing, and no error fires. You only notice when the answer looks empty.

One misunderstood task becomes a `DELETE FROM orders`

Prompt injection or a model misread, and your write-capable connection is now a liability. Read-only at the prompt level is not enough.

Every session re-learns your schema from scratch

Each conversation burns tokens introspecting your tables and rediscovering relationships you already taught it yesterday.

What DataBridge does

Six things every agent-database integration needs

Built from the failure modes we hit in production. Open source from day one.

Plugs into any MCP-compatible agent

Claude, Cursor, Windsurf, GPT — works out of the box in minutes. Standard MCP protocol, no custom integrations.

Read-only enforced at the parser level

Not prompted, not policy-checked — parsed. The query never reaches your database if it isn't a SELECT. No prompt override can break it.

Schema and join keys learned once

DataBridge introspects your databases on startup, caches the schema, and discovers cross-database join keys. Subsequent queries skip the rediscovery overhead.

Cross-database joins in a single tool call

Query PostgreSQL, MongoDB, SQLite, and DuckDB in one expression. The agent doesn't need to orchestrate multiple round-trips.

Computation the agent shouldn't do in SQL

EMA, chi-square, regex text extraction — operations that are awkward or wrong in SQL run inside DataBridge with precise, deterministic results.

Supports PostgreSQL, MongoDB, SQLite, DuckDB

More engines on the roadmap. The same query interface works regardless of the underlying store.

Benchmark

TBD

on DataAgentBench

Coming soon

DataBridge Cloud

Everything the OSS version does, fully hosted — with the missing pieces teams ask for the most.

Hosted MCP endpoint

Skip self-hosting. Connect your agent to a single hosted URL we operate.

Web UI for database connections

Add, edit, and rotate database credentials from a dashboard — not a config file.

Join discovery UI

Inspect the joins DataBridge inferred. Override or improve them manually when your schema is non-obvious.

Database hints and custom instructions

Teach the agent your domain language: "users.account_type='Pro' means paid", "never join orders to deleted_users". Persisted across sessions.

Eval log

Every query your agent ran, every result it received. Debug bad answers by replaying the exact tool call.

Team sharing

One endpoint, multiple users. Centralized credentials, individual audit trails.

Be first when DataBridge Cloud launches

Drop your email. We'll let you know the moment hosted endpoints open — no spam, no marketing drip.

Self-hosting today? Star us on GitHub and follow releases.