Lsp Edit Symbol

What it does

When your agent uses it

• You want to change a function
• Variable by name and dont have exact coordinates

Example prompts

• “/lsp-edit-symbol”

Requirements

• Compatibility (from SKILL.md): Requires the agent-lsp MCP server (github.com/blackwell-systems/agent-lsp)
• Pre-approved tools (allowed-tools): mcp__lsp__find_symbol, mcp__lsp__list_symbols, mcp__lsp__apply_edit, mcp__lsp__replace_symbol_body

Workflow steps

2 steps, taken from the step headings in SKILL.md.

1. 1Locate the file
2. 2Replace the symbol body (primary path)

What it can do on your machine

Read from SKILL.md and the folder at commit 38ca488. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • mcp__lsp__find_symbol
  • mcp__lsp__list_symbols
  • mcp__lsp__apply_edit
  • mcp__lsp__replace_symbol_body

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  No scripts in the folder and no shell commands in SKILL.md (its code samples are json).

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

• Compatibility

  Requires the agent-lsp MCP server (github.com/blackwell-systems/agent-lsp)

  From compatibility in the SKILL.md frontmatter.

Context cost

Lsp Edit Symbol loads about 948 tokens when it runs. Until then it costs about 65 tokens; SKILL.md has 319 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~65

When it runs · the whole SKILL.md, loaded when a task matches

~948

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from blackwell-systems/agent-lsp at commit 38ca488, republished under its MIT licence (© blackwell-systems). 319 words, ~948 tokens.

name

lsp-edit-symbol

description

Edit a named symbol without knowing its file or position. Use when you want to change a function, type, or variable by name and don't have exact coordinates. Resolves the symbol to its definition, retrieves its full range, and applies the edit.

allowed-tools

mcp__lsp__find_symbol, mcp__lsp__list_symbols, mcp__lsp__apply_edit, mcp__lsp__replace_symbol_body

compatibility

Requires the agent-lsp MCP server (github.com/blackwell-systems/agent-lsp)

argument-hint

[symbol-name] [new-body-or-signature]

user-invocable

true

license

MIT

metadata.required-capabilities

workspaceSymbolProvider

{ "tool": "find_symbol", "query": "MyFunc" }

{
  "tool": "replace_symbol_body",
  "file_path": "/path/to/file.go",
  "symbol_path": "MyFunc",
  "new_body": "func MyFunc() error {\n\treturn nil\n}"
}

{
  "tool": "list_symbols",
  "file_path": "/path/to/file.go",
  "language_id": "go"
}

{
  "tool": "apply_edit",
  "file_path": "/path/to/file.go",
  "old_text": "func MyFunc() {",
  "new_text": "func MyFunc() error {"
}

{
  "tool": "apply_edit",
  "workspace_edit": {
    "changes": {
      "file:///path/to/file.go": [{
        "range": { "start": {"line": 12, "character": 0}, "end": {"line": 18, "character": 1} },
        "newText": "func MyFunc() error {\n\treturn nil\n}"
      }]
    }
  }
}

© blackwell-systems, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/lsp-edit-symbol of blackwell-systems/agent-lsp.

Open the folder on GitHubat commit 38ca488