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Claude Code 2.1.207 migration status

Last verified: 2026-07-13

Authoritative upstream baseline:

This document records implemented behavior separately from compatibility surfaces and open work. A listed upstream changelog item is not considered complete merely because a similarly named command or tool exists.

Implemented in the migration branch

Upstream release Behavior Local evidence
2.1.202 dynamicWorkflowSize accepts small, medium, or large as an advisory workflow fan-out setting runtime::DynamicWorkflowSize, config validation/tests, workflow run manifests
2.1.202 Workflow child records carry workflow.run_id and workflow.name attributes WorkflowRunOutput.telemetryAttributes and agent manifests
2.1.205 /checkup aliases /doctor shared slash-command specs, direct CLI dispatch, parser tests
2.1.205 Claude Browser and Claude Preview are reserved MCP server names scoped MCP config validation and regression tests
2.1.206 Per-server MCP request_timeout_ms is honored, with camelCase and legacy timeout aliases McpStdioServerConfig.tool_call_timeout_ms, bootstrap/manager path, config tests
2.1.207 Shell-form hooks and MCP headersHelper reject ${user_config.*} interpolation partial config validation records unsafe entries without executing them
2.1.207 Safe cd <workspace> && <read command> >/dev/null is no longer classified as unrestricted shell access bash permission classifier regression tests

The former v2.1.201 host-only surfaces also moved forward:

  • Monitor now polls a command and/or file condition with bounded timeout and interval values.
  • ScheduleWakeup now persists a durable queue record under CLAWD_WAKEUP_STORE or .clawd-wakeups/.
  • Workflow manifests report the selected size, recommended agent range, and workflow telemetry attributes.
  • The built-in deep-research workflow fans out to 2, 4, or 8 static agents for small, medium, or large mode.

Compatibility surface, not full upstream behavior

  • Workflow execution still parses a safe static subset of JavaScript-like agent(...) calls; it is not an isolated general JavaScript VM.
  • Workflow telemetry attributes are persisted in local manifests. There is not yet a complete OTLP exporter that emits them to an external OpenTelemetry collector.
  • A scheduled wakeup is durable, but a long-lived host dispatcher still needs to consume due queue entries after the originating CLI exits.
  • PushNotification, ReportFindings, Artifact, Projects, ClaudeDesign, and ShowOnboardingRolePicker expose stable host payloads but do not reproduce every desktop/mobile host integration.

Open 2.1.202–2.1.207 work

The following upstream areas remain unproven or incomplete and must stay on the migration backlog:

  • full background daemon upgrade/recovery, cold-resume, cross-agent TaskStop/TaskOutput, and remote-control synchronization;
  • additional working directories in MCP roots/list plus roots/list_changed notifications;
  • --json-schema request/output enforcement, including accepted JSON Schema format keywords and invalid-schema failures;
  • complete auto-mode classifier behavior, provider entitlement/default handling, transcript tamper protection, and unresolved-variable rm -rf prompting;
  • Bedrock, Vertex AI, Foundry, Claude Platform on AWS, gateway login, SSO refresh, and provider-specific model picker behavior;
  • updater/installer streaming, launcher/symlink ownership detection, retry behavior, and Homebrew channel diagnostics;
  • full /doctor remediation/checkup flow and checked-in CLAUDE.md trimming recommendations;
  • /cd directory completion and external EnterWorktree confirmation UX;
  • desktop/mobile Remote Control attachment, status, slash-command, and reconnection behavior;
  • Windows junction/worktree deletion hardening, deleted-CWD handling, AWS credential stall guards, and terminal input regressions;
  • plugin LSP failover, verify-skill rewrite suppression, plugin option scope restrictions, and monitor-specific option substitution controls;
  • renderer virtualization and responsiveness fixes for long streaming blocks, scrolling, transcript positioning, and agent-view layout;
  • worktree sparse-path cleanup and malformed bracket-pattern recovery across rules, skills, ignore files, and worktree includes.

Verification commands

scripts/fmt.sh --check
cd rust
cargo clippy --workspace --all-targets -- -D warnings
cargo test --workspace

Completion of the overall migration requires the open list above to be implemented or explicitly demonstrated as not applicable, followed by the full workspace gates.