Grain (API Key) integration for AI agents.
Grain (API Key) integration for AI agents with secure authentication and server-side credential injection. Open Connector runs the OAuth, seals the token in an encrypted vault, and serves Grain (API Key) tools to your agent over MCP or a typed API — credentials injected server-side, every call audited, nothing leaving your infrastructure. Open source (AGPL-3.0) and self-hostable.
Real Grain (API Key) actions, managed and audited.
Your user connects Grain (API Key) once; your agent can then secure AI-agent actions — scoped to the OAuth permissions you grant and the tool allowlist you configure. Every action is least-privilege and written to a tamper-evident audit trail.
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Your user grants Grain (API Key) access once (OAuth) — the token lands in the vault.
- 2
Your agent calls a tool over MCP or the typed API; Open Connector injects the credential server-side.
- 3
Every routed call appends a hash-chained audit record — nothing leaves your infra.
Grain (API Key) tool surface.
The following managed tool groups are exposed by this integration. Each item is surfaced as tool metadata so agents can discover safe actions and build reliable workflows.
- Grain (API Key) tools
- Secure AI-agent actions.
Grain (API Key) integration, answered
- How do AI agents use Grain (API Key) through Open Connector?
- Your user connects Grain (API Key) once with one of its cataloged authentication methods. Open Connector stores the credential in an encrypted vault and exposes Grain (API Key) tools to your agent over MCP or a typed API, with credentials injected server-side on each call.
- Is this a Grain (API Key) MCP server?
- Yes. Open Connector can serve Grain (API Key) as a named MCP server with a scoped allowlist and a per-user connection URL, so any MCP client can call Grain (API Key) actions with credentials injected server-side.
- Where do Grain (API Key) credentials live?
- In your own infrastructure. Open Connector keeps credentials in its own vault and injects them at call time, so they never leave your environment.
Give your agents Grain (API Key) — keep the keys.
Open source, self-hostable, with Grain (API Key) credentials that never leave your infrastructure. Run it from source today.