Synchronous hook that lets plugins inspect and optionally block messages
before they are written to the session JSONL file. Primary use case is
private mode... when enabled, the plugin returns { block: true } and the
message never gets persisted.
The hook runs on the hot path (synchronous, like tool_result_persist).
Handlers execute sequentially in priority order. If any handler returns
{ block: true }, the write is skipped immediately. Handlers can also
return a modified message to write instead of the original.
Changes:
- src/plugins/types.ts: add hook name, event/result types, handler map entry
- src/plugins/hooks.ts: add runBeforeMessageWrite() following tool_result_persist pattern
- src/agents/session-tool-result-guard.ts: invoke hook before every originalAppend() call
- src/agents/session-tool-result-guard-wrapper.ts: wire hook runner to the guard
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Make before_agent_start override merging preserve the first defined
model/provider override so higher-priority hooks cannot be overwritten by
lower-priority handlers, and align the corresponding test title and
expectation with the intended precedence behavior.
Co-authored-by: Cursor <cursoragent@cursor.com>
Enable plugins to override the model and provider for agent runs by
returning modelOverride/providerOverride from the before_agent_start
hook. The hook is now invoked early in run.ts (before resolveModel)
so overrides take effect. The result is passed to attempt.ts via
earlyHookResult to prevent double-firing.
This enables security-critical use cases like routing PII-containing
prompts to local models instead of cloud providers.
* feat: add before_compaction and before_reset plugin hooks with session context
- Pass session messages to before_compaction hook
- Add before_reset plugin hook for /new and /reset commands
- Add sessionId to plugin hook agent context
* feat: extraBootstrapFiles config with glob pattern support
Add extraBootstrapFiles to agent defaults config, allowing glob patterns
(e.g. "projects/*/TOOLS.md") to auto-load project-level bootstrap files
into agent context every turn. Missing files silently skipped.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix(status): show custom memory plugins as enabled, not unavailable
The status command probes memory availability using the built-in
memory-core manager. Custom memory plugins (e.g. via plugin slot)
can't be probed this way, so they incorrectly showed "unavailable".
Now they show "enabled (plugin X)" without the misleading label.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix: use async fs.glob and capture pre-compaction messages
- Replace globSync (node:fs) with fs.glob (node:fs/promises) to match
codebase conventions for async file operations
- Capture session.messages BEFORE replaceMessages(limited) so
before_compaction hook receives the full conversation history,
not the already-truncated list
* fix: resolve lint errors from CI (oxlint strict mode)
- Add void to fire-and-forget IIFE (no-floating-promises)
- Use String() for unknown catch params in template literals
- Add curly braces to single-statement if (curly rule)
* fix: resolve remaining CI lint errors in workspace.ts
- Remove `| string` from WorkspaceBootstrapFileName union (made all
typeof members redundant per no-redundant-type-constituents)
- Use type assertion for extra bootstrap file names
- Drop redundant await on fs.glob() AsyncIterable (await-thenable)
* fix: address Greptile review — path traversal guard + fs/promises import
- workspace.ts: use path.resolve() + traversal check in loadExtraBootstrapFiles()
- commands-core.ts: import fs from node:fs/promises, drop fs.promises prefix
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix: resolve symlinks before workspace boundary check
Greptile correctly identified that symlinks inside the workspace could
point to files outside it, bypassing the path prefix check. Now uses
fs.realpath() to resolve symlinks before verifying the real path stays
within the workspace boundary.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix: address Greptile review — hook reliability and type safety
1. before_compaction: add compactingCount field so plugins know both
the full pre-compaction message count and the truncated count being
fed to the compaction LLM. Clarify semantics in comment.
2. loadExtraBootstrapFiles: use path.basename() for the name field
so "projects/quaid/TOOLS.md" maps to the known "TOOLS.md" type
instead of an invalid WorkspaceBootstrapFileName cast.
3. before_reset: fire the hook even when no session file exists.
Previously, short sessions without a persisted file would silently
skip the hook. Now fires with empty messages array so plugins
always know a reset occurred.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix: validate bootstrap filenames and add compaction hook timeout
- Only load extra bootstrap files whose basename matches a recognized
workspace filename (AGENTS.md, TOOLS.md, etc.), preventing arbitrary
files from being injected into agent context.
- Wrap before_compaction hook in a 30-second Promise.race timeout so
misbehaving plugins cannot stall the compaction pipeline.
- Clarify hook comments: before_compaction is intentionally awaited
(plugins need messages before they're discarded) but bounded.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* fix: make before_compaction non-blocking, add sessionFile to after_compaction
- before_compaction is now true fire-and-forget — no await, no timeout.
Plugins that need full conversation data should persist it themselves
and return quickly, or use after_compaction for async processing.
- after_compaction now includes sessionFile path so plugins can read
the full JSONL transcript asynchronously. All pre-compaction messages
are preserved on disk, eliminating the need to block compaction.
- Removes Promise.race timeout pattern that didn't actually cancel
slow hooks (just raced past them while they continued running).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* feat: add sessionFile to before_compaction for parallel processing
The session JSONL already has all messages on disk before compaction
starts. By providing sessionFile in before_compaction, plugins can
read and extract data in parallel with the compaction LLM call rather
than waiting for after_compaction. This is the optimal path for memory
plugins that need the full conversation history.
sessionFile is also kept on after_compaction for plugins that only
need to act after compaction completes (analytics, cleanup, etc.).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* refactor: move bootstrap extras into bundled hook
---------
Co-authored-by: Solomon Steadman <solstead@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Clawdbot <clawdbot@alfie.local>
Co-authored-by: Peter Steinberger <steipete@gmail.com>
