SQL

@humanlayer/channels-sql stores Channels mailboxes in Postgres.

npm install @humanlayer/channels-sql @humanlayer/channels-delivery effect @effect/sql-pg

const bot = Channels.make({
	namespace: 'my-app',
	providers: [slack],
	eventProcessing: { concurrency: 8, maxAttempts: 5, leaseMs: 30_000 },
	storage: ChannelsSql.make({ claimLimit: 50, runMigrations: true, polling: { intervalMs: 1_000 } }),
})

Provide a SqlClient, such as PgClient.layerConfig(...) from @effect/sql-pg. With runMigrations: true the store creates its tables on start. Postgres has nothing to wake processing, so it polls.