feat(deepagents): add filesystem tool allowlist - #671
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🦋 Changeset detectedLatest commit: 5c3d982 The changes in this PR will be included in the next version bump. This PR includes changesets to release 3 packages
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deepagents-acp
deepagents
@langchain/sandbox-standard-tests
@langchain/daytona
@langchain/deno
@langchain/modal
@langchain/node-vfs
@langchain/quickjs
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Hunter Lovell (hntrl)
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Colin Francis (colifran)
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This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## deepagents@1.11.0 ### Minor Changes - [#671](#671) [`6ae9d1e`](6ae9d1e) Thanks [@hntrl](https://github.com/hntrl)! - feat(filesystem): add allowlist for filesystem middleware tools - [#669](#669) [`4643148`](4643148) Thanks [@hntrl](https://github.com/hntrl)! - feat(deepagents): add structured system prompt configuration - [#673](#673) [`eb18c70`](eb18c70) Thanks [@hntrl](https://github.com/hntrl)! - feat(backends): add delete protocol support Adds a `DeleteResult` type and optional backend `delete` method, preserves delete through backend protocol adaptation, and implements file deletion across the built-in state, store, filesystem, composite, context hub, sandbox, and node-vfs backends. ### Patch Changes - [#691](#691) [`39a7049`](39a7049) Thanks [@colifran](https://github.com/colifran)! - fix(deepagents): backend adapter drops route prefixes - [#672](#672) [`cc26c41`](cc26c41) Thanks [@hntrl](https://github.com/hntrl)! - fix(deepagents): allow custom middleware to replace defaults by name ## deepagents-acp@0.1.19 ### Patch Changes - Updated dependencies [[`39a7049`](39a7049), [`6ae9d1e`](6ae9d1e), [`cc26c41`](cc26c41), [`4643148`](4643148), [`eb18c70`](eb18c70)]: - deepagents@1.11.0 ## @langchain/node-vfs@0.2.1 ### Patch Changes - [#673](#673) [`eb18c70`](eb18c70) Thanks [@hntrl](https://github.com/hntrl)! - feat(backends): add delete protocol support Adds a `DeleteResult` type and optional backend `delete` method, preserves delete through backend protocol adaptation, and implements file deletion across the built-in state, store, filesystem, composite, context hub, sandbox, and node-vfs backends. ## @deepagents/evals@0.0.18 ### Patch Changes - Updated dependencies [[`39a7049`](39a7049), [`6ae9d1e`](6ae9d1e), [`cc26c41`](cc26c41), [`4643148`](4643148), [`eb18c70`](eb18c70)]: - deepagents@1.11.0 Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Hunter Lovell (hntrl)
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Jul 24, 2026
Adds a `tools` allowlist option to `createFilesystemMiddleware` so callers can restrict which built-in filesystem tools are exposed to the model. The middleware now builds the filesystem system prompt from the tools that are actually visible on the request, avoiding instructions for tools that were filtered by the allowlist or backend capability checks. - Adds a public `FsToolName` type and `tools` option to `FilesystemMiddlewareOptions`. - Filters filesystem middleware tools at construction time when an explicit allowlist is provided, while preserving existing `execute` backend capability filtering. - Requires `read_file` in explicit allowlists because it is needed for filesystem workflows and large-result recovery. - Generates the filesystem tool prompt dynamically from visible filesystem tools, and only appends execute-specific instructions when `execute` is actually available. - Adds unit and integration coverage for allowlist behavior, prompt filtering, unsupported `execute`, and user-provided non-filesystem tools.
Hunter Lovell (hntrl)
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Jul 24, 2026
This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## deepagents@1.11.0 ### Minor Changes - [#671](#671) [`6ae9d1e`](6ae9d1e) Thanks [@hntrl](https://github.com/hntrl)! - feat(filesystem): add allowlist for filesystem middleware tools - [#669](#669) [`4643148`](4643148) Thanks [@hntrl](https://github.com/hntrl)! - feat(deepagents): add structured system prompt configuration - [#673](#673) [`eb18c70`](eb18c70) Thanks [@hntrl](https://github.com/hntrl)! - feat(backends): add delete protocol support Adds a `DeleteResult` type and optional backend `delete` method, preserves delete through backend protocol adaptation, and implements file deletion across the built-in state, store, filesystem, composite, context hub, sandbox, and node-vfs backends. ### Patch Changes - [#691](#691) [`39a7049`](39a7049) Thanks [@colifran](https://github.com/colifran)! - fix(deepagents): backend adapter drops route prefixes - [#672](#672) [`cc26c41`](cc26c41) Thanks [@hntrl](https://github.com/hntrl)! - fix(deepagents): allow custom middleware to replace defaults by name ## deepagents-acp@0.1.19 ### Patch Changes - Updated dependencies [[`39a7049`](39a7049), [`6ae9d1e`](6ae9d1e), [`cc26c41`](cc26c41), [`4643148`](4643148), [`eb18c70`](eb18c70)]: - deepagents@1.11.0 ## @langchain/node-vfs@0.2.1 ### Patch Changes - [#673](#673) [`eb18c70`](eb18c70) Thanks [@hntrl](https://github.com/hntrl)! - feat(backends): add delete protocol support Adds a `DeleteResult` type and optional backend `delete` method, preserves delete through backend protocol adaptation, and implements file deletion across the built-in state, store, filesystem, composite, context hub, sandbox, and node-vfs backends. ## @deepagents/evals@0.0.18 ### Patch Changes - Updated dependencies [[`39a7049`](39a7049), [`6ae9d1e`](6ae9d1e), [`cc26c41`](cc26c41), [`4643148`](4643148), [`eb18c70`](eb18c70)]: - deepagents@1.11.0 Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Hunter Lovell (hntrl)
added a commit
that referenced
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Jul 24, 2026
Adds a `tools` allowlist option to `createFilesystemMiddleware` so callers can restrict which built-in filesystem tools are exposed to the model. The middleware now builds the filesystem system prompt from the tools that are actually visible on the request, avoiding instructions for tools that were filtered by the allowlist or backend capability checks. - Adds a public `FsToolName` type and `tools` option to `FilesystemMiddlewareOptions`. - Filters filesystem middleware tools at construction time when an explicit allowlist is provided, while preserving existing `execute` backend capability filtering. - Requires `read_file` in explicit allowlists because it is needed for filesystem workflows and large-result recovery. - Generates the filesystem tool prompt dynamically from visible filesystem tools, and only appends execute-specific instructions when `execute` is actually available. - Adds unit and integration coverage for allowlist behavior, prompt filtering, unsupported `execute`, and user-provided non-filesystem tools.
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Summary
Adds a
toolsallowlist option tocreateFilesystemMiddlewareso callers can restrict which built-in filesystem tools are exposed to the model. The middleware now builds the filesystem system prompt from the tools that are actually visible on the request, avoiding instructions for tools that were filtered by the allowlist or backend capability checks.Changes
FsToolNametype andtoolsoption toFilesystemMiddlewareOptions.executebackend capability filtering.read_filein explicit allowlists because it is needed for filesystem workflows and large-result recovery.executeis actually available.execute, and user-provided non-filesystem tools.