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Changelog

All notable changes to this project are documented in this file.

The format is based on Keep a Changelog.

[1.0.0]

Added

  • Arcp::Envelope per spec §5.1 (arcp, id, type, session_id, trace_id, job_id, event_seq, payload).
  • Arcp::Client with session handshake, submit_job, subscribe_job, cancel_job, get_result, list_jobs, ack, close.
  • Arcp::Runtime::Runtime with agent registry, job manager, lease manager, subscription manager, event log.
  • Arcp::Runtime::JobContext with progress, log, metric, status, tool_call, tool_result, stream_result, finish, fail!, emit.
  • Session handshake: session.hello, session.welcome, session.bye, session.error (§6.1, §6.7).
  • Capability negotiation via Arcp::Session::CapabilitySet and Arcp::Session::Feature constants (§6.2).
  • Heartbeat with session.ping / session.pong (§6.4).
  • Application-level ack with session.ack (§6.5).
  • Cursored session.list_jobs / session.jobs (§6.6).
  • Resume token and last_event_seq replay (§6.3).
  • Agent versioning with name@version refs and AgentInventory.resolve (§7.5).
  • Cross-session job.subscribe with history replay (§7.6).
  • result_chunk event kind with result_id terminator (§8.4).
  • All ten standard event kinds: progress, result_chunk, log, thought, tool_call, tool_result, status, metric, trace_span, delegate (§8.2).
  • Lease subsetting with capability/expires_at/budget bounds (§9, §10).
  • cost.budget capability using BigDecimal arithmetic (§9.6).
  • Trace context propagation via Fiber-local Arcp::Trace::Context (§11).
  • Transports: MemoryTransport, WebSocketTransport, StdioTransport.
  • 15 wire error codes mapped to Arcp::Errors::* subclasses (§12).
  • Pluggable Arcp::Auth::AuthScheme with bundled Bearer verifier.
  • Vendor extension namespace via x-vendor.* event kinds (§15).