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Jobs (§7)

In PHP, direct tool invocation is represented by ToolInvoke and handled by ToolInvocationHandler.

States (§7.3)

JobState includes accepted, queued, running, blocked, paused, completed, failed, and cancelled.

Client side

$result = $client->invokeTool('planner@1.0.0', ['task' => 'write']);

Runtime side

$runtime->registerTool('planner', $handler);
$runtime->registerToolVersion('planner', '1.0.0', $handler);
$runtime->setDefaultToolVersion('planner', '1.0.0');

SubmitOptions

PHP uses method parameters and typed IDs rather than a single submit options object:

$client->invokeTool('echo', [], traceId: TraceId::random(), idempotencyKey: $key);

Idempotency (§7.2)

Pass IdempotencyKey to invokeTool() for mutating operations.

Cancellation (§7.4)

Call ARCPClient::cancelJob($jobId). Tool handlers should accept and observe Amp\Cancellation.

Timeouts

Pass $deadlineSeconds to invokeTool() to bound the await.

Cost budgets (v1.1, §9.6)

Pass ['lease' => ['cost.budget' => ['USD:1.00']]]; cost metrics decrement the counter and can raise BudgetExhaustedException.

Agent versions (v1.1, §7.5)

Use name@version in tool names. Missing versions raise AgentVersionNotAvailableException.

What the runtime guarantees

The runtime emits accepted/started/terminal job messages, maps typed exceptions to errors, and removes terminal jobs from the live list.

Runnable examples

See samples/agent-versions/, samples/list-jobs/, and tests/Integration/JobLifecycleTest.php.