Graphjin

GraphJin is an open source layer that gives AI agents governed access to databases, APIs, files and code through a single graph. It exposes GraphQL and MCP over your data sources, so one agent can answer questions that span, say, Postgres accounts, Snowflake usage data and a CRM, then validate and execute policy checked operations rather than guessing from memory. The project is released under the Apache 2.0 license and the current major version is v3. It is built for engineering and data teams who want an agent to answer real organizational questions and carry out real operations while refusing what it should not do. The site describes standing questions that keep answering themselves based on database polls rather than model calls. Its authors also publish a public benchmark called DeepORG that grades models on answering, acting and refusing, listing results for ten tested models with zero unsafe effects across 3,351 attempts. A testimonial describes a deployment across Snowflake and Postgres spanning thousands of tables. The home page offers a two minute quick start and documentation. Pricing is unpublished. The site has no pricing page, and the project is open source under Apache 2.0, so the software itself can be used without a published fee. Any commercial or hosted offering would need to be confirmed with the vendor.