# amqp_0_9

> For the complete documentation index, see [llms.txt](https://docs.redpanda.com/llms.txt). Component-specific: [connect-full.txt](https://docs.redpanda.com/connect-full.txt)

---
title: amqp_0_9
latest-connect-version: 4.93.0
latest-operator-version: v26.1.4
latest-console-tag: v3.7.3
latest-redpanda-tag: v26.1.9
docname: outputs/amqp_0_9
page-component-name: connect
page-version: master
page-component-version: master
page-component-title: Connect
page-relative-src-path: outputs/amqp_0_9.adoc
page-edit-url: https://github.com/redpanda-data/rp-connect-docs/edit/main/modules/components/pages/outputs/amqp_0_9.adoc
page-git-created-date: "2024-05-24"
page-git-modified-date: "2026-05-26"
---

<!-- Source: https://docs.redpanda.com/connect/components/outputs/amqp_0_9.md -->

**Type:** Output ▼

[Output](https://docs.redpanda.com/connect/components/outputs/amqp_0_9/)[Input](https://docs.redpanda.com/connect/components/inputs/amqp_0_9/)

**Available in:** [Cloud](https://docs.redpanda.com/cloud-data-platform/develop/connect/components/outputs/amqp_0_9/%20%22View%20the%20Cloud%20version%20of%20this%20component%22), Self-Managed

Sends messages to an AMQP (0.91) exchange. AMQP is a messaging protocol used by various message brokers, including RabbitMQ.

#### Common

```yml
outputs:
  label: ""
  amqp_0_9:
    urls: [] # No default (required)
    exchange: "" # No default (required)
    key: ""
    type: ""
    metadata:
      exclude_prefixes: []
    max_in_flight: 64
```

#### Advanced

```yml
outputs:
  label: ""
  amqp_0_9:
    urls: [] # No default (required)
    exchange: "" # No default (required)
    exchange_declare:
      enabled: false
      type: direct
      durable: true
      arguments: "" # No default (optional)
    key: ""
    type: ""
    content_type: application/octet-stream
    content_encoding: ""
    correlation_id: ""
    reply_to: ""
    expiration: ""
    message_id: ""
    user_id: ""
    app_id: ""
    metadata:
      exclude_prefixes: []
    priority: ""
    max_in_flight: 64
    persistent: false
    mandatory: false
    immediate: false
    timeout: ""
    tls:
      enabled: false
      skip_cert_verify: false
      enable_renegotiation: false
      root_cas: ""
      root_cas_file: ""
      client_certs: []
```

The metadata fields from each message are delivered as headers.

TLS is automatically enabled when connecting to an `amqps` URL. However, you can customize [TLS settings](#tls) if required.

You can use [function interpolations](https://docs.redpanda.com/connect/configuration/interpolation/#bloblang-queries) to dynamically set values for the following fields: `key`, `exchange`, and `type`.

## [](#fields)Fields

### [](#app_id)`app_id`

Set an application ID for each message using a dynamic interpolated expression. This field supports [interpolation functions](https://docs.redpanda.com/connect/configuration/interpolation/#bloblang-queries).

**Type**: `string`

**Default**: `""`

### [](#content_encoding)`content_encoding`

The content encoding attribute of each message. This field supports [interpolation functions](https://docs.redpanda.com/connect/configuration/interpolation/#bloblang-queries).

**Type**: `string`

**Default**: `""`

### [](#content_type)`content_type`

The MIME type of each message. This field supports [interpolation functions](https://docs.redpanda.com/connect/configuration/interpolation/#bloblang-queries).

**Type**: `string`

**Default**: `application/octet-stream`

### [](#correlation_id)`correlation_id`

Set a unique correlation ID for each message using a dynamic interpolated expression to help match messages to responses. This field supports [interpolation functions](https://docs.redpanda.com/connect/configuration/interpolation/#bloblang-queries).

**Type**: `string`

**Default**: `""`

### [](#exchange)`exchange`

The AMQP exchange to publish messages to. This field supports [interpolation functions](https://docs.redpanda.com/connect/configuration/interpolation/#bloblang-queries).

**Type**: `string`

### [](#exchange_declare)`exchange_declare`

Passively declares the [target exchange](#exchange) to check whether an exchange with the specified name exists and is configured correctly. If the exchange exists, then the passive declaration verifies that fields specified in this object match its properties. If the target exchange does not exist, this output creates it.

**Type**: `object`

### [](#exchange_declare-arguments)`exchange_declare.arguments`

Arguments for server-specific implementations of the exchange (optional). You can use arguments to configure additional parameters for exchange types that require them.

**Type**: `string`

```yaml
# Examples:
arguments:
  alternate-exchange: my-ae
```

### [](#exchange_declare-durable)`exchange_declare.durable`

Whether the declared exchange is durable.

**Type**: `bool`

**Default**: `true`

### [](#exchange_declare-enabled)`exchange_declare.enabled`

Whether to enable exchange declaration.

**Type**: `bool`

**Default**: `false`

### [](#exchange_declare-type)`exchange_declare.type`

The type of the exchange, which determines how messages are routed to queues.

> 📝 **NOTE**
>
> Dots (`.`) in message keys are only enforced in routing keys and message types for `topic` exchanges.

**Type**: `string`

**Default**: `direct`

**Options**: `direct`, `fanout`, `topic`, `headers`, `x-custom`

### [](#expiration)`expiration`

Set the TTL of each message in milliseconds. This field supports [interpolation functions](https://docs.redpanda.com/connect/configuration/interpolation/#bloblang-queries).

**Type**: `string`

**Default**: `""`

### [](#immediate)`immediate`

Whether to set the immediate flag on published messages. When set to `true`, if there are no active consumers for a queue, the message is dropped instead of waiting.

**Type**: `bool`

**Default**: `false`

### [](#key)`key`

The binding key to set for each message. This field supports [interpolation functions](https://docs.redpanda.com/connect/configuration/interpolation/#bloblang-queries).

**Type**: `string`

**Default**: `""`

### [](#mandatory)`mandatory`

Whether to set the mandatory flag on published messages. When set to `true`, a published message that cannot be routed to any queues is returned to the sender.

**Type**: `bool`

**Default**: `false`

### [](#max_in_flight)`max_in_flight`

The maximum number of messages to have in flight at a given time. Increase this number to improve throughput.

**Type**: `int`

**Default**: `64`

### [](#message_id)`message_id`

Set a message ID for each message using a dynamic interpolated expression. This field supports [interpolation functions](https://docs.redpanda.com/connect/configuration/interpolation/#bloblang-queries).

**Type**: `string`

**Default**: `""`

### [](#metadata)`metadata`

Configure which metadata values are added to messages as headers. This allows you to pass additional context information along with your messages.

**Type**: `object`

### [](#metadata-exclude_prefixes)`metadata.exclude_prefixes[]`

Provide a list of explicit metadata key prefixes to exclude when adding metadata to sent messages.

**Type**: `array`

**Default**: `[]`

### [](#persistent)`persistent`

Whether to store delivered messages on disk. By default, message delivery is transient.

**Type**: `bool`

**Default**: `false`

### [](#priority)`priority`

Set the priority of each message using a dynamic interpolated expression. This field supports [interpolation functions](https://docs.redpanda.com/connect/configuration/interpolation/#bloblang-queries).

**Type**: `string`

**Default**: `""`

```yaml
# Examples:
priority: 0

# ---

priority: ${! meta("amqp_priority") }

# ---

priority: ${! json("doc.priority") }
```

### [](#reply_to)`reply_to`

Set the name of the queue to which responses are sent using a dynamic interpolated expression. This field supports [interpolation functions](https://docs.redpanda.com/connect/configuration/interpolation/#bloblang-queries).

**Type**: `string`

**Default**: `""`

### [](#timeout)`timeout`

The maximum period to wait for a message acknowledgment before abandoning it and attempting a resend. If this value is not set, the system waits indefinitely.

**Type**: `string`

**Default**: `""`

### [](#tls)`tls`

Configure Transport Layer Security (TLS) settings to secure network connections. This includes options for standard TLS as well as mutual TLS (mTLS) authentication where both client and server authenticate each other using certificates. Key configuration options include `enabled` to enable TLS, `client_certs` for mTLS authentication, `root_cas`/`root_cas_file` for custom certificate authorities, and `skip_cert_verify` for development environments.

**Type**: `object`

### [](#tls-client_certs)`tls.client_certs[]`

A list of client certificates for mutual TLS (mTLS) authentication. Configure this field to enable mTLS, authenticating the client to the server with these certificates.

You must set `tls.enabled: true` for the client certificates to take effect.

**Certificate pairing rules**: For each certificate item, provide either:

-   Inline PEM data using both `cert` **and** `key` or

-   File paths using both `cert_file` **and** `key_file`.


Mixing inline and file-based values within the same item is not supported.

**Type**: `object`

**Default**: `[]`

```yaml
# Examples:
client_certs:
  - cert: foo
    key: bar

# ---

client_certs:
  - cert_file: ./example.pem
    key_file: ./example.key
```

### [](#tls-client_certs-cert)`tls.client_certs[].cert`

A plain text certificate to use.

**Type**: `string`

**Default**: `""`

### [](#tls-client_certs-cert_file)`tls.client_certs[].cert_file`

The path of a certificate to use.

**Type**: `string`

**Default**: `""`

### [](#tls-client_certs-key)`tls.client_certs[].key`

A plain text certificate key to use.

> ⚠️ **CAUTION**
>
> This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see [Secrets](https://docs.redpanda.com/connect/configuration/secrets/).

**Type**: `string`

**Default**: `""`

### [](#tls-client_certs-key_file)`tls.client_certs[].key_file`

The path of a certificate key to use.

**Type**: `string`

**Default**: `""`

### [](#tls-client_certs-password)`tls.client_certs[].password`

A plain text password for when the private key is password encrypted in PKCS#1 or PKCS#8 format. The obsolete `pbeWithMD5AndDES-CBC` algorithm is not supported for the PKCS#8 format.

Because the obsolete pbeWithMD5AndDES-CBC algorithm does not authenticate the ciphertext, it is vulnerable to padding oracle attacks that can let an attacker recover the plaintext.

> ⚠️ **CAUTION**
>
> This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see [Secrets](https://docs.redpanda.com/connect/configuration/secrets/).

**Type**: `string`

**Default**: `""`

```yaml
# Examples:
password: foo

# ---

password: ${KEY_PASSWORD}
```

### [](#tls-enable_renegotiation)`tls.enable_renegotiation`

Whether to allow the remote server to repeatedly request renegotiation. Enable this option if you’re seeing the error message `local error: tls: no renegotiation`.

Requires version 3.45.0 or later.

**Type**: `bool`

**Default**: `false`

### [](#tls-enabled)`tls.enabled`

Whether custom TLS settings are enabled.

**Type**: `bool`

**Default**: `false`

### [](#tls-root_cas)`tls.root_cas`

Specify a root certificate authority to use (optional). This is a string that represents a certificate chain from the parent-trusted root certificate, through possible intermediate signing certificates, to the host certificate. Use either this field for inline certificate data or `root_cas_file` for file-based certificate loading.

> ⚠️ **CAUTION**
>
> This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see [Secrets](https://docs.redpanda.com/connect/configuration/secrets/).

**Type**: `string`

**Default**: `""`

```yaml
# Examples:
root_cas: |-
  -----BEGIN CERTIFICATE-----
  ...
  -----END CERTIFICATE-----
```

### [](#tls-root_cas_file)`tls.root_cas_file`

Specify the path to a root certificate authority file (optional). This is a file, often with a `.pem` extension, which contains a certificate chain from the parent-trusted root certificate, through possible intermediate signing certificates, to the host certificate. Use either this field for file-based certificate loading or `root_cas` for inline certificate data.

**Type**: `string`

**Default**: `""`

```yaml
# Examples:
root_cas_file: ./root_cas.pem
```

### [](#tls-skip_cert_verify)`tls.skip_cert_verify`

Whether to skip server-side certificate verification. Set to `true` only for testing environments as this reduces security by disabling certificate validation. When using self-signed certificates or in development, this may be necessary, but should never be used in production. Consider using `root_cas` or `root_cas_file` to specify trusted certificates instead of disabling verification entirely.

**Type**: `bool`

**Default**: `false`

### [](#type)`type`

A custom message type to set for each message. This field supports [interpolation functions](https://docs.redpanda.com/connect/configuration/interpolation/#bloblang-queries).

**Type**: `string`

**Default**: `""`

### [](#urls)`urls[]`

A list of URLs to connect to. This input attempts to connect to each URL in the list, in order, until a successful connection is established. It then continues to use that URL until the connection is closed.

If an item in the list contains commas, it is split into multiple URLs.

Requires version 3.58.0 or later.

**Type**: `array`

```yaml
# Examples:
urls:
  - "amqp://guest:guest@127.0.0.1:5672/"

# ---

urls:
  - "amqp://127.0.0.1:5672/,amqp://127.0.0.2:5672/"

# ---

urls:
  - "amqp://127.0.0.1:5672/"
  - "amqp://127.0.0.2:5672/"
```

### [](#user_id)`user_id`

Set the user ID to the name of the publisher. If this property is set by a publisher, its value must match the name of the user that opened the connection. This field supports [interpolation functions](https://docs.redpanda.com/connect/configuration/interpolation/#bloblang-queries).

**Type**: `string`

**Default**: `""`