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Example code of ianrothmann/langserve-php-client

Informations about the package langserve-php-client

LangServe PHP Client

Purpose

This package provides a PHP client for the LangServe API, allowing you to easily call API endpoints such as invoke, batch, and stream. It simplifies the process of sending requests and handling responses from your LangServe project.

It was designed to work with vanilla PHP so it can be included with any framework (such as Laravel).

https://www.langchain.com/langserve

Installation

To install the package, use Composer:

Dependencies

This package requires:

Ensure these are included in your project by adding them to your composer.json if not already present:

Usage

First, instantiate the RemoteRunnable with the base URL of your LangServe API:

You can optionally add a Bearer token as the second parameter (remember to implement it in LangServe):

You have some different options for adding headers and authentication:

Invoke

Invoke a single API call:

Batch

Invoke multiple API calls in a batch:

Stream

Handle streaming responses:

Response Classes

Responses from invoke and batch are handled through RemoteRunnableResponse and RemoteRunnableBatchResponse, respectively. stream initially provides RemoteRunnableStreamEvent for each received event, and finally, a RemoteRunnableStreamResponse aggregates all events to compile the total content.

Exceptions

This client can throw several exceptions based on API response:

These exceptions help in accurately diagnosing issues with API interactions.

Contributions

Any contributions to this package is welcome. I'm looking to add more functionality to it and will work on it as required.

All versions of langserve-php-client with dependencies

PHP Build Version
Package Version
Requires php Version >=7.4
symfony/http-client Version >=5.4
Composer command for our command line client (download client) This client runs in each environment. You don't need a specific PHP version etc. The first 20 API calls are free. Standard composer command

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