v0.34.0: align with Claude Code May 2026 update#29
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Claude Code shipped a sizeable update: hooks now support direct
posix_spawn via `args: string[]`, MCP stdio servers receive
`CLAUDE_PROJECT_DIR`, PostToolUse:Task carries
`x-claude-code-parent-agent-id`, and `claude plugin details` shows
per-plugin metadata. v0.34.0 lines us up with all of it.
A — `args: string[]` for hook commands (P0)
- hooks/hooks.json: every hook entry now ships both `command` (legacy
Claude Code) and `args` (new Claude Code). Direct spawn skips the
`/bin/sh -c` shim, eliminates a class of EAGAIN burst-spawn
failures observed on WSL, and removes a layer of shell quoting.
- src/hooks/installer.ts: new `hookEntry(action, options)` helper
that emits both fields uniformly; `buildHookArgs()` mirrors
`buildHookCommand()`. The npm-installer path (writes user
settings.json) now also emits `args`.
- tests/hooks/installer.test.ts: new regression guard iterates
every PreToolUse / PostToolUse / SessionStart entry and asserts
both `command` and `args` are present and well-formed.
B — `parent_agent_id` capture (P1)
- src/core/event-log.ts: optional `parent_agent_id` field on
HookEvent so dispatch chains can be reconstructed (main →
general-purpose → tp-* delegate, etc.).
- src/hooks/post-task.ts: PostTaskHookInput accepts
`parent_agent_id`; processPostTask forwards it to the appendEvent
record when Claude Code populates it. Older versions omit the
field; new shape stays back-compatible.
C — startup diagnostic for CLAUDE_PROJECT_DIR (P2)
- src/index.ts: startServer emits one `mcp_startup` diagnostic per
process with the source of the resolved projectRoot
(CLAUDE_PROJECT_DIR / INIT_CWD / git-detect / explicit arg) plus
a flag indicating whether CLAUDE_PROJECT_DIR was present at all.
Fire-and-forget — no extra await before createServer (avoiding a
flaky-test regression in tests/index-stdin.test.ts).
F — plugin.json description polish
- 22 → 25 subagents (correct count).
- Sharper one-liner that lists what `claude plugin details
token-pilot` users see: AST-aware reads, find_usages, structural
git diff/log, edit-safety guard, Task-routing matcher, telemetry,
and the tp-* tiered roster.
Version bump 0.33.1 → 0.34.0 across the three manifests; agents
rebuilt under 0.34.0.
Tests: 1293/1293 (+1 from new args regression).
Build: clean.
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Summary
Claude Code shipped a sizeable update — hooks gain
args: string[](direct posix_spawn, no shell), MCP stdio servers receiveCLAUDE_PROJECT_DIR, PostToolUse:Task shipsparent_agent_id,claude plugin details <name>shows per-plugin metadata. v0.34.0 lines us up with all of it. 1293/1293 tests pass.Changes
A —
args: string[]for hook commands (P0)hooks/hooks.json— every entry now ships bothcommand(legacy CC) andargs(new CC). Direct spawn eliminates the/bin/sh -cshim — sidesteps the class of EAGAIN burst-spawn failures observed on WSL.src/hooks/installer.ts— newhookEntry()+buildHookArgs()helpers. npm-installer path (writes user settings.json) also emitsargs.tests/hooks/installer.test.ts— regression guard asserts both fields present and well-formed across every section.B —
parent_agent_idcapture (P1)src/core/event-log.ts— optionalparent_agent_idonHookEventso dispatch chains can be reconstructed (main → general-purpose → tp-* delegate).src/hooks/post-task.ts— forwardsparent_agent_idwhen Claude Code provides it; older versions omit the field.C — Startup diagnostic for CLAUDE_PROJECT_DIR (P2)
src/index.ts—startServeremits onemcp_startupdiagnostic per process withproject_root_source(CLAUDE_PROJECT_DIR / INIT_CWD / git-detect / args) andclaude_project_dir_present. Fire-and-forget.F — plugin.json polish
claude plugin details token-pilot.Migration
Existing users:
claude plugin marketplace update token-pilot && claude plugin update token-pilot@token-pilot— Claude Code picks upargsautomatically.npm install -g token-pilot@latest— global CLI updates.token-pilot migrate-hooks— cleans any stale pinned paths from earlier installs (still relevant from v0.33.0).No breaking changes —
commandfield kept side-by-side so older Claude Code versions stay functional.Test plan
npm run buildclean (25 agents composed under 0.34.0)npx vitest run→ 1293/1293 passnpx tsc --noEmitclean (pre-existing unreachable-after-exit warnings unchanged)🤖 Generated with Claude Code