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PRAXO-CORE PHP Core

PHP 8.2+ implementation of the PRAXO-CORE agent contract.

  • SPEC_VERSION: 0.2.0
  • Core version: 0.1.0
  • License: MIT
  • Dependencies: none beyond the PHP standard library

Scope

The Core implements all eleven vector groups: toolcall, jsonschema, plugin, checkpoint, event, memory, policy, stream, context, middleware, and agent loop. It includes a public API snapshot and dependency-free tests. Provider adapters are not included in 0.1.0.

Build and test

php language/php/conformance/run.php
php language/php/conformance/run.php --check-api
php language/php/tests/run.php
composer validate --strict --no-check-publish

Local toolchain used by the repository maintainers lives at D:\dev\php.

Quickstart

<?php

require __DIR__ . '/php/src/autoload.php';

use Praxo\Core\Agent;
use Praxo\Core\AgentOptions;
use Praxo\Core\Session;
use Praxo\Core\StaticModel;

$model = new StaticModel('hello');
$agent = new Agent(new AgentOptions($model));
$result = $agent->run(new Session('demo'), 'hello');
echo $result->output;

Tools use the same options object:

use Praxo\Core\FuncTool;
use Praxo\Core\ToolRegistry;

$registry = new ToolRegistry();
$registry->register(new FuncTool('echo', 'Echo arguments', static fn (array $args): array => $args));

$options = new AgentOptions($model);
$options->tools = $registry;
$options->maxSteps = 8;
$agent = new Agent($options);

Layout

  • src/ library (PSR-4 Praxo\Core\).
  • conformance/run.php vector runner, API snapshot, and check mode.
  • tests/run.php dependency-free core tests.
  • api/0.1.0.txt checked-in public API snapshot.

Release

Tag shape: php/v0.1.0. The tag targets SPEC_VERSION 0.2.0.