cohere_chat

Available in: Cloud, Self-Managed

Generates responses to messages in a chat conversation, using the Cohere API and external tools.

# Common configuration fields, showing default values
label: ""
cohere_chat:
  base_url: https://api.cohere.com
  auth_token: "" # No default (required)
  model: command-r-plus # No default (required)
  prompt: "" # No default (optional)
  system_prompt: "" # No default (optional)
  max_tokens: 0 # No default (optional)
  temperature: 0 # No default (optional)
  response_format: text
  json_schema: "" # No default (optional)
  max_tool_calls: 10
  tools: []
yml

This processor sends the contents of user prompts to the Cohere API, which generates responses using all available context, including supplementary data provided by external tools. By default, the processor submits the entire payload of each message as a string, unless you use the prompt field to customize it.

To learn more about chat completion, see the Cohere API documentation.

Fields

base_url

The base URL to use for API requests.

Type: string

Default: https://api.cohere.com

auth_token

The authentication token for the Cohere API.

This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see Manage Secrets before adding it to your configuration.

Type: string

model

The name of the Cohere large language model (LLM) you want to use.

Type: string

# Examples
model: command-r-plus
model: command-r
model: command
model: command-light
yml

prompt

The user prompt you want to generate a response for. By default, the processor submits the entire payload as a string.

This field supports interpolation functions.

Type: string

system_prompt

The system prompt to submit along with the user prompt.

This field supports interpolation functions.

Type: string

max_tokens

The maximum number of tokens to allow in the chat completion.

Type: int

temperature

Choose a sampling temperature between 0 and 2:

  • Higher values, such as 0.8 make the output more random.

  • Lower values, such as 0.2 make the output more focused and deterministic.

Redpanda recommends adding a value for this field or top_p, but not both.

Type: float

response_format

Choose the model’s output format. If json_schema is specified, then you must also configure a json_schema or schema_registry.

Type: string

Default: text

Options: text , json , json_schema

json_schema

The JSON schema to use when responding in json_schema format. To learn more about the JSON schema features supported, see the Cohere documentation.

Type: string

schema_registry

The schema registry to dynamically load schemas from when responding in json_schema format. Schemas themselves must be in JSON format. To learn more about the JSON schema features supported, see the Cohere documentation.

Type: object

schema_registry.url

The base URL of the schema registry service.

Type: string

schema_registry.subject

The subject name to fetch the schema for.

Type: string

schema_registry.refresh_interval

The refresh rate for fetching the latest schema. If not specified the schema does not refresh.

Type: string

schema_registry.tls

Override system defaults with custom TLS settings.

Type: object

schema_registry.tls.skip_cert_verify

Whether to skip server-side certificate verification.

Type: bool

Default: false

schema_registry.tls.enable_renegotiation

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

Type: bool

Default: false

schema_registry.tls.root_cas

Specify a 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.

This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see Manage Secrets before adding it to your configuration.

Type: string

Default: ""

# Examples
root_cas: |-
  -----BEGIN CERTIFICATE-----
  ...
  -----END CERTIFICATE-----
yml

schema_registry.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.certificate.

Type: string

Default: ""

# Examples
root_cas_file: ./root_cas.pem
yml

schema_registry.tls.client_certs

A list of client certificates to use. For each certificate specify values for either the cert and key fields, or cert_file and key_file fields.

Type: array

Default: []

# Examples
client_certs:
  - cert: foo
    key: bar
client_certs:
  - cert_file: ./example.pem
    key_file: ./example.key
yml

schema_registry.tls.client_certs[].cert

The plain text certificate to use.

Type: string

Default: ""

schema_registry.tls.client_certs[].key

The plain text certificate key to use.

This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see Manage Secrets before adding it to your configuration.

Type: string

Default: ""

schema_registry.tls.client_certs[].cert_file

The path to the certificate to use.

Type: string

Default: ""

schema_registry.tls.client_certs[].key_file

The path of a certificate key to use.

Type: string

Default: ""

schema_registry.tls.client_certs[].password

The 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.

The pbeWithMD5AndDES-CBC algorithm does not authenticate ciphertext, and is vulnerable to padding oracle attacks which may allow an attacker to recover the plain text password.

This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see Manage Secrets before adding it to your configuration.

Type: string

Default: ""

# Examples
password: foo
password: ${KEY_PASSWORD}
yml

schema_registry.oauth

Configure OAuth version 1.0 to give this component authorized access to your schema registry.

Type: object

schema_registry.oauth.enabled

Whether to use OAuth version 1 in requests to the schema registry.

Type: bool

Default: false

schema_registry.oauth.consumer_key

The value used to identify this component or client to your schema registry.

Type: string

Default: ""

schema_registry.oauth.consumer_secret

The secret used to establish ownership of the consumer key.

This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see Manage Secrets before adding it to your configuration.

Type: string

Default: ""

schema_registry.oauth.access_token

The value this component can use to gain access to the data in the schema registry.

Type: string

Default: ""

schema_registry.oauth.access_token_secret

The secret that establishes ownership of the oauth.access_token.

This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see Manage Secrets before adding it to your configuration.

Type: string

Default: ""

schema_registry.basic_auth

Configure basic authentication for requests from this component to your schema registry.

Type: object

schema_registry.basic_auth.enabled

Whether to use basic authentication in requests.

Type: bool

Default: false

schema_registry.basic_auth.username

The username of the account credentials to authenticate as.

Type: string

Default: ""

schema_registry.basic_auth.password

The password of the account credentials to authenticate with.

This field contains sensitive information that usually shouldn’t be added to a configuration directly. For more information, see Manage Secrets before adding it to your configuration.

Type: string

Default: ""

schema_registry.jwt

BETA: Configure JSON Web Token (JWT) authentication for the secure transmission of data from your schema registry to this component.

Type: object

schema_registry.jwt.enabled

Whether to use JWT authentication in requests.

Type: bool

Default: false

schema_registry.jwt.private_key_file

A file in PEM format encoded via PKCS1 or PKCS8 as private key.

Type: string

Default: ""

schema_registry.jwt.signing_method

The method used to sign the token, such as RS256, RS384, RS512 or EdDSA.

Type: string

Default: ""

schema_registry.jwt.claims

Values used to pass the identity of the authenticated entity to the service provider. In this case, between this component and the schema registry.

Type: object

Default: {}

schema_registry.jwt.headers

The key/value pairs that identify the type of token and signing algorithm.

Type: object

Default: {}

top_p

An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. For example, a top_p of 0.1 means only the tokens comprising the top 10% probability mass are sampled.

Redpanda recommends adding a value for this field or temperature, but not both.

Type: float

frequency_penalty

A number between -2.0 and 2.0. Positive values penalize new tokens based on the frequency of their appearance in the text so far. This decreases the model’s likelihood to repeat the same line verbatim.

Type: float

presence_penalty

A number between -2.0 and 2.0. Positive values penalize new tokens based on the frequency of their appearance in the text so far. This increases the model’s likelihood to talk about new topics.

Type: float

seed

If specified, Redpanda Connect makes a best effort to sample deterministically. Repeated requests with the same seed and parameters should return the same result. Determinism is not guaranteed.

Type: int

stop

Specify up to four sequences to stop the API from generating further tokens.

Type: array

max_tool_calls

The maximum number of tool calls the model can perform.

Type: int

Default: 10

tools

External tools that the model can invoke, such as functions, APIs, or web browsing. You can define a series of processors that describe these tools, enabling the model to use agent-like behavior to decide when and how to invoke them to enhance response generation.

Type: array

Default: []

tools[].name

The name of the external tool you want to use.

Type: string

tools[].description

A description of what the tool does. The model uses this to decide when to invoke the tool.

Type: string

tools[].parameters

The parameters the model needs to invoke the tool.

Type: object

tools[].parameters.required

The parameters you must define.

Type: array

Default: []

tools[].parameters.properties

The required inputs to invoke the tool.

Type: object

tools[].parameters.properties.<name>.type

The data type of the parameter.

Type: string

tools[].parameters.properties.<name>.description

A description of the parameter.

Type: string

tools[].parameters.properties.<name>.enum

Defines this parameter as an enumeration and specifies the set of values the model is allowed to use.

Type: array

Default: []

tools[].processors

The pipeline to execute when the model invokes the external tool.

Type: array

Example

In this pipeline configuration, the Command R+ model executes a number of processors, which make a tool call to retrieve weather data for a specific city.

input:
  generate:
    count: 1
    mapping: |
      root = "What is the weather like in Chicago?"
pipeline:
  processors:
    - cohere_chat:
        auth_token: my_cohere_api_token
        model: command-r-plus
        prompt: "${!content().string()}"
        tools:
          - name: GetWeather
            description: "Retrieve the weather for a specific city"
            parameters:
              required: ["city"]
              properties:
                city:
                  type: string
                  description: the city to look up the weather for
            processors:
              - http:
                  verb: GET
                  url: 'https://wttr.in/${!this.city}?T'
                  headers:
                    User-Agent: curl/8.11.1 # Returns a text string from the weather website
output:
  stdout: {}
yaml