ee111fd978
# Conflicts: # AGENTS.md # docs/config-catalog.md # docs/cordis-catalog/events.md # docs/cordis-catalog/services.md # docs/core-data-structures/core.md # docs/event-producer-consumer.md # docs/persistence-catalog.md # docs/rfc/implemented/architecture/2026-07-05-reconstructable-requests.md # docs/rfc/implemented/feature/2026-06-15-code-mode.md # docs/rfc/implemented/feature/2026-06-30-hook-bridges.md # docs/rfc/implemented/feature/2026-06-30-interception-seams.md # docs/rfc/implemented/feature/2026-07-08-repeat-tool-guard.md # docs/rfc/proposed/simplification/2026-07-04-prune-dead-core-spine-surface.md # examples/AGENTS.md # examples/acp-agent/cordis.yml # examples/acp-agent/tests/acp.snapshot.ts # examples/echo-agent/cordis.yml # examples/sandbox-acp-agent/cordis.yml # packages/cordis/tool-cordis/src/api-catalog.ts # packages/core/agent-core/README.md # packages/core/agent-core/src/index.ts # packages/core/agent-loop/README.md # packages/core/agent-loop/src/loop.ts # packages/core/agent-loop/tests/interception.spec.ts # packages/core/agent/src/types.ts # packages/core/tools/README.md # packages/core/tools/src/code-mode.ts # packages/core/tools/src/index.ts # packages/fs/fs-local/src/index.ts # packages/fs/fs/README.md # packages/fs/fs/src/index.ts # packages/guard/repeat-tool-guard/README.md # packages/guard/repeat-tool-guard/src/index.ts # packages/hooks/hooks-claude/src/index.ts # packages/hooks/hooks-codex/src/index.ts # packages/ui/acp-agent/src/index.ts
fs/ - filesystem capability family
The filesystem stack: a provider seam (text IO + atomic mutation with an optional version guard), a local implementation, a policy gate plugin (observed-state + read-before-edit + version-guarded write/edit), and the model-facing file tools + executor. All product packages.
| Package | Role | ctx key |
|---|---|---|
fs/ |
Provider seam: text IO + atomic mutation primitives (optional version guard); owns the fs/* policy events |
ctx.fs |
fs-local/ |
Local-filesystem FileSystem implementation |
(registers ctx.fs) |
fs-policy/ |
Policy gate plugin: observed-state + read-before-edit + version-guarded write/edit, via the fs/* event gate |
(no service — fs/* listeners) |
tool-fs/ |
Model-facing read/write/edit tools AND the executor (reads via ctx.fs, owns read windowing, dispatches fs/*) |
(registers on ctx.tools) |
The interface lives at fs/fs/. A sandboxed, remote, or project-scoped filesystem backend can replace fs-local without touching the seam, the policy gate, or the model-facing tool schemas. The policy (fs-policy/) is a plugin that participates only through the fs/* event gate, not a service the tool injects — so dropping it gracefully loses the policy and leaves the unconstrained bare provider rather than breaking the tool. A deployment that loads tool-fs/ is expected to also load it.
No timeouts on file IO
read/write/edit take no timeoutMs, and the provider seam arms no deadline — unlike bash and web, which consume @deepseek-ai/dsh-timeout. A local syscall is best-effort-abortable at most: a timeout could not force an in-progress fsync/rename to stop, so a deadline here would be a knob that cannot deliver on its promise. Adding one would also be an implicit default in the exact place explicit-over-implicit forbids. Both reference agents (Claude Code, Codex) leave file IO untimed for the same reason; cancellation still propagates through the tool-execution signal for best-effort abort at syscall boundaries.