Database federation

Connect 10 database engines
to your federated graph.

Database federation on Gyri connects ten database engines via live introspection — previewDbConnectorSchema discovers schema, installDbConnectorGraph wires db_operation bridges, and agents multihop across SQL rows, NoSQL documents, and CRM in one cited session.

Live schema introspection → storage:remote types → db_operation bridges. Query Postgres, SQLite, Redis, Elasticsearch, and cloud warehouses in the same multihop GraphQL session as CRM, docs, and public data.

Start free trial Graph infrastructure

Related: Integrations hub · Graph infrastructure · Federated search

Database federation

10 database engines
on the federated graph.

Live schema introspection → storage:remote types → db_operation bridges. Query Postgres, SQLite, Redis, Elasticsearch, and cloud warehouses in the same multihop GraphQL session as CRM, docs, and public data.

PostgreSQL

information_schema introspection, FK-aware bridges, parameterized SELECT templates.

MySQL / MariaDB

INFORMATION_SCHEMA columns and foreign keys mapped to remote graph types.

SQLite

Embedded SQL — sqlite_master and PRAGMA introspection.

SQL Server

INFORMATION_SCHEMA for enterprise SQL Server databases.

MongoDB

Collection sampling and BSON type inference for document stores.

DynamoDB

Partition/sort key discovery and safe GetItem/Scan/Query ops.

Snowflake

Cloud warehouse tables via INFORMATION_SCHEMA.

BigQuery

Dataset table discovery with service-account auth.

Elasticsearch

Index mapping introspection and term/match_all reads.

Redis

Keyspace prefix discovery via SCAN — GET and hash field reads.

How it works

Introspect → install → multihop

Connect
Introspect
Install graph
Multihop query
query {
  previewDbConnectorSchema(connectorId: "wdbc_…", typeKeyPrefix: "postgres")
}
Capabilities
Introspection-first

Schema from the live database

previewDbConnectorSchema discovers tables, columns, primary keys, and foreign keys — agents configure exposure, not column shapes.

db_operation bridges

Safe parameterized reads

get_by_pk, list_rows, and filter_eq operations only. No raw SQL from GraphQL or agents. Read-only connectors with entity allowlists.

Graph-native

Same multihop session

Join CRM deals, Slack threads, and Postgres rows in one cited GraphQL query — results land on custom records and insights.

Starter modules

Ship in minutes

federation-db-*-starter module packs for all 10 dialects with anchor types and FK bridges where supported.

Start free trial Full database federation guide Integrations hub
Why teams switch
01

BI tools sit outside the agent graph

Dashboards and SQL clients return tables — not cited, traversable nodes agents can join with CRM and docs.

02

Hand-wired ETL rots

One-off sync jobs break when schemas change. Introspection keeps the graph aligned with the source of truth.

03

Unsafe ad-hoc SQL

Agents with raw SQL access are a liability. Gyri uses allowlisted tables and parameterized operation templates.

Federate your databases

Integrations hub Graph infrastructure Federated search

Frequently asked questions

Which databases does Gyri support?

PostgreSQL, MySQL/MariaDB, SQLite, SQL Server, MongoDB, DynamoDB, Snowflake, BigQuery, Elasticsearch, and Redis — ten dialects with federation-db-*-starter module packs.

Can agents run arbitrary SQL?

No. Only parameterized get_by_pk, list_rows, and filter_eq operations against allowlisted tables or collections.

How does introspection work?

previewDbConnectorSchema reads information_schema (SQL) or samples Mongo collections, then suggests remote types and FK bridges for installDbConnectorGraph.

Gyri think verbs

26 MCP think verbs —
not API wrappers.

Gyri federates into one graph. Agents orient with recall and ground, capture with reflect, and commit with promote — the full epistemic lifecycle via MCP think.

think verb=recall

Semantic orient — load prior cited conclusions before you re-derive from scratch.

think verb=ground

FTS-only orient on live federated CRM, email, and Slack — zero embed cost.

think verb=consider

Classify novelty against the workspace corpus before you commit a thesis.

think verb=reflect

Capture drafts, tensions, and questions as typed thoughts on the graph.

think verb=traverse

Multihop GraphQL in one think call — deal → contact → email → ticket.

think verb=fetch

Hydrate full rows by ref when search or traverse surfaced the right node.

think verb=promote

Gated commit — draft thought → durable cited insight the whole team recalls.

think verb=wish

Natural-language buildout — queue workspace types, connectors, and workflows.

Full catalog via MCP think verb=catalog · Why Gyri think verbs beat API wrappers → · MCP for Claude & Cursor