# Conflicts: # .agents/notes/implemented/architecture/2026-06-20-branded-ids.i18n.yaml # .agents/notes/implemented/architecture/2026-06-20-branded-ids.md # .agents/notes/implemented/architecture/2026-06-20-branded-ids.zh.md # packages/fs/tool-fs/tests/read-image.spec.ts # packages/llm/llm-deepseek/tests/adapter.e2e.ts # packages/llm/llm-deepseek/tests/serialize.spec.ts # packages/llm/llm-pi-ai/src/context.ts # packages/llm/llm-pi-ai/tests/context.spec.ts # packages/llm/llm-pi-ai/tests/convert.spec.ts # packages/llm/llm/src/message.ts # packages/llm/llm/tests/content.spec.ts
@deepseek-ai/dsh-tool-str-replace-editor
English | 中文
Standalone model-facing str_replace_editor over ctx.fs. It can be composed with persistent Bash, one-shot Bash, sandboxed Bash, or another terminal surface.
Config
| Key | Default | Meaning |
|---|---|---|
maxOutputChars |
16000 |
Prefix characters retained for file and directory views. |
description |
Editor command guide | Model-facing tool description. |
Tool
The schema provides view, create, str_replace, and insert over absolute paths. File views use one-based line numbers and preserve content tabs, so displayed text remains valid literal replacement input; directory views omit hidden, dependency, and Python-cache entries and descend two levels. A metadata miss from view, str_replace, or insert records confirmed absence before returning FS_NOT_FOUND, so a later create can recover an externally deleted path through the mounted policy's guarded-create flow; absence never authorizes str_replace or insert. Replacement requires one unique literal match and reports errors only in the public old_str vocabulary. Insert follows the selected zero-based insertion boundary without adding an implicit trailing newline. Mutations preserve tabs outside the requested edit.
Model Experience
Tool schema
What the model sees
The generated str_replace_editor schema, including the configured description. The plugin contributes no standalone system-prompt section.
Token effect
Fixed schema cost while str_replace_editor is visible.
KV Cache effect
Prefix-stable while the configured description and schema remain unchanged.
Tool results
What the model sees
Views return numbered text or a shallow directory listing. Calls expose file locations, and create/replace calls expose diff cards to presentation surfaces. Mutations return concise confirmations. Long views keep their prefix and append a clipping notice.
Token effect
Data-dependent and bounded by maxOutputChars plus the fixed clipping notice.
KV Cache effect
Append-only tool results follow the reusable request prefix.
Known Limitations and Deferred Work
- Operations target UTF-8 text; binary files are unsupported.
str_replaceintentionally rejects zero or multiple matches and has noreplace_allargument.- Every mutation goes through
fs/write-intentorfs/edit-intent, resolves the current session sandbox policy, and delegates enforcement to the mounted filesystem and policy plugins.