# MySQL + PostgreSQL — Pipedream Connect

> Connect a user's MySQL and PostgreSQL accounts and expose tools for both apps directly in your product or your agent.

- Apps: MySQL (`mysql`) + PostgreSQL (`postgresql`)
- This page (HTML): https://pipedream.com/apps/mysql/integrations/postgresql
- One `external_user_id` owns both connected accounts, and each account stays independently revocable.

## One session, both toolsets (recommended)

- Endpoint: `https://remote.mcp.pipedream.net/v3`
- Headers: `Authorization: Bearer <token>` · `x-pd-project-id` · `x-pd-environment` · `x-pd-external-user-id` · `x-pd-app-slug: mysql,postgresql`
- `x-pd-app-slug` takes a comma-separated list, so `mysql,postgresql` is one session on one transport. Both toolsets arrive from a single `listTools()`, and a tool is called exactly as it would be in a single-app session.

```ts
import { Client } from "@modelcontextprotocol/sdk/client/index.js"
import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp.js"
import { PipedreamClient } from "@pipedream/sdk"

const pd = new PipedreamClient({
  projectId: process.env.PIPEDREAM_PROJECT_ID!,
  clientId: process.env.PIPEDREAM_CLIENT_ID!,
  clientSecret: process.env.PIPEDREAM_CLIENT_SECRET!,
  projectEnvironment: "production",
})

const accessToken = await pd.rawAccessToken

const transport = new StreamableHTTPClientTransport(
  new URL("https://remote.mcp.pipedream.net/v3"),
  {
    requestInit: {
      headers: {
        Authorization: `Bearer ${accessToken}`,
        "x-pd-project-id": process.env.PIPEDREAM_PROJECT_ID!,
        "x-pd-environment": "production",
        "x-pd-external-user-id": "{external_user_id}", // any stable ID for this user in your system
        "x-pd-app-slug": "mysql,postgresql",
      },
    },
  },
)

const mcp = new Client({ name: "my-agent", version: "1.0.0" })
await mcp.connect(transport)

const { tools } = await mcp.listTools()

// One list, both toolsets: MySQL and PostgreSQL tools arrive
// together, each keyed by its own app's slug.

// e.g. run Execute SQL Query:
const result = await mcp.callTool({
  name: "mysql-execute-raw-query",
  arguments: {
    sql: "SQL Query",
  },
})
```

Docs: [MCP guide](https://pipedream.com/docs/connect/mcp/developers.md)

## Both apps from your backend

```ts
import { PipedreamClient } from "@pipedream/sdk"

const pd = new PipedreamClient({
  projectId: process.env.PIPEDREAM_PROJECT_ID!,
  clientId: process.env.PIPEDREAM_CLIENT_ID!,
  clientSecret: process.env.PIPEDREAM_CLIENT_SECRET!,
  projectEnvironment: "production",
})

const externalUserId = "{external_user_id}" // any stable ID for this user in your system

const [mysqlTools, postgresqlTools] =
  await Promise.all([
    pd.components.list({ app: "mysql" }),
    pd.components.list({ app: "postgresql" }),
  ])

// One external user owns both connected accounts, so either app's tools
// run on their behalf with the same externalUserId.
```

Docs: [Managed auth guide](https://pipedream.com/docs/connect/managed-auth/quickstart.md) · [Tools guide](https://pipedream.com/docs/connect/components.md)

## MySQL

- API slug: `mysql` (use in MCP headers and tool keys)
- Auth: API key (Pipedream-managed)
- Categories: Databases
- Website: https://www.mysql.com/
- App page (HTML): https://pipedream.com/apps/mysql
- Tools: 10 actions · 5 triggers

Full tool list, API proxy, and SDK quickstart: https://pipedream.com/apps/mysql.md

### Actions (top 8 of 10)

- [Execute SQL Query](https://pipedream.com/apps/mysql/actions/execute-raw-query.md) — `mysql-execute-raw-query`
- [Create Row](https://pipedream.com/apps/mysql/actions/create-row.md) — `mysql-create-row`
- [Delete Row](https://pipedream.com/apps/mysql/actions/delete-row.md) — `mysql-delete-row`
- [Execute Query](https://pipedream.com/apps/mysql/actions/execute-query.md) — `mysql-execute-query`
- [Execute Stored Procedure](https://pipedream.com/apps/mysql/actions/execute-stored-procedure.md) — `mysql-execute-stored-procedure`
- [Find Row](https://pipedream.com/apps/mysql/actions/find-row.md) — `mysql-find-row`
- [List Stored Procedure Options](https://pipedream.com/apps/mysql/actions/list-stored-procedure-options.md) — `mysql-list-stored-procedure-options`
- [List Table Options](https://pipedream.com/apps/mysql/actions/list-table-options.md) — `mysql-list-table-options`

### Triggers (top 4 of 5)

- [New Column](https://pipedream.com/apps/mysql/triggers/new-column.md) — `mysql-new-column`
- [New or Updated Row](https://pipedream.com/apps/mysql/triggers/new-or-updated-row.md) — `mysql-new-or-updated-row`
- [New Row](https://pipedream.com/apps/mysql/triggers/new-row.md) — `mysql-new-row`
- [New Row (Custom Query)](https://pipedream.com/apps/mysql/triggers/new-row-custom-query.md) — `mysql-new-row-custom-query`

## PostgreSQL

- API slug: `postgresql` (use in MCP headers and tool keys)
- Auth: API key (Pipedream-managed)
- Categories: Databases
- Website: https://www.postgresql.org/
- App page (HTML): https://pipedream.com/apps/postgresql
- Tools: 9 actions · 5 triggers

Full tool list, API proxy, and SDK quickstart: https://pipedream.com/apps/postgresql.md

### Actions (top 8 of 9)

- [Execute SQL Query](https://pipedream.com/apps/postgresql/actions/execute-custom-query.md) — `postgresql-execute-custom-query`
- [Delete Row(s)](https://pipedream.com/apps/postgresql/actions/delete-rows.md) — `postgresql-delete-rows`
- [Find Row](https://pipedream.com/apps/postgresql/actions/find-row.md) — `postgresql-find-row`
- [Find Row With Custom Query](https://pipedream.com/apps/postgresql/actions/find-row-custom-query.md) — `postgresql-find-row-custom-query`
- [Insert Row](https://pipedream.com/apps/postgresql/actions/insert-row.md) — `postgresql-insert-row`
- [List Schema Options](https://pipedream.com/apps/postgresql/actions/list-schema-options.md) — `postgresql-list-schema-options`
- [Query SQL Database](https://pipedream.com/apps/postgresql/actions/database-query-sql-database.md) — `database-query-sql-database`
- [Update Row](https://pipedream.com/apps/postgresql/actions/update-row.md) — `postgresql-update-row`

### Triggers (top 4 of 5)

- [New Column](https://pipedream.com/apps/postgresql/triggers/new-column.md) — `postgresql-new-column`
- [New or Updated Row](https://pipedream.com/apps/postgresql/triggers/new-or-updated-row.md) — `postgresql-new-or-updated-row`
- [New Row](https://pipedream.com/apps/postgresql/triggers/new-row.md) — `postgresql-new-row`
- [New Row Custom Query](https://pipedream.com/apps/postgresql/triggers/new-row-custom-query.md) — `postgresql-new-row-custom-query`

---

- MySQL: https://pipedream.com/apps/mysql.md · PostgreSQL: https://pipedream.com/apps/postgresql.md
- All apps: https://pipedream.com/apps — index: https://pipedream.com/llms.txt
- Pipedream docs for agents: https://pipedream.com/docs/llms.txt