Lsp Fix All

What it does

When your agent uses it

• Bulk-resolve errors and warnings the language server can fix automatically

Example prompts

• “/lsp-fix-all”

Requirements

• Compatibility (from SKILL.md): Requires the agent-lsp MCP server (github.com/blackwell-systems/agent-lsp)
• Pre-approved tools (allowed-tools): mcp__lsp__get_diagnostics, mcp__lsp__suggest_fixes, mcp__lsp__apply_edit, mcp__lsp__open_document, mcp__lsp__format_document

Workflow steps

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

1. 1Open and collect initial diagnostics
2. 2Classify and filter code actions
3. 3Apply one fix and re-collect (the core loop)
4. 4Verify and format

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__get_diagnostics
  • mcp__lsp__suggest_fixes
  • mcp__lsp__apply_edit
  • mcp__lsp__open_document
  • mcp__lsp__format_document

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • kind

  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 Fix All loads about 1.6k tokens when it runs, and up to ~2.1k if it reads all its reference files. Until then it costs about 56 tokens; SKILL.md has 650 words of instructions outside code blocks.

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

~56

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

~1.6k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~2.1k

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). 650 words, ~1,601 tokens.

name

lsp-fix-all

description

Apply available quick-fix code actions for all current diagnostics in a file, one at a time with re-collection between each fix. Use to bulk-resolve errors and warnings the language server can fix automatically.

allowed-tools

mcp__lsp__get_diagnostics, mcp__lsp__suggest_fixes, mcp__lsp__apply_edit, mcp__lsp__open_document, mcp__lsp__format_document

compatibility

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

argument-hint

[file-path]

user-invocable

true

license

MIT

metadata.required-capabilities

codeActionProvider

metadata.optional-capabilities

documentFormattingProvider

iteration = 0
max_iterations = 50

while iteration < max_iterations:
    diagnostics = mcp__lsp__get_diagnostics(file_path)
    if diagnostics is empty: break

    for each diagnostic in diagnostics:
        actions = mcp__lsp__suggest_fixes(diagnostic.range)
        applicable = filter to quickfix / source.organizeImports kinds (see Step 2)
        if applicable is not empty:
            apply the first applicable action via mcp__lsp__apply_edit
            record: (line, message, action title) in "Fixed" list
            iteration += 1
            break  # restart the outer loop — line numbers have shifted

    if no diagnostic in this pass had an applicable quick-fix:
        break  # no progress possible — exit loop

## lsp-fix-all Summary

File: /path/to/file.go
Initial diagnostics: N errors, M warnings
Fixes applied: K
Remaining (no auto-fix available): J

### Fixed
- line X: <message> → applied: <action title>

### Skipped (no quick-fix available)
- line Y: <message>

### Loop stopped
- apply_edit returned error on line Z: <error message>
- Fixes applied before failure: K

© 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

SKILL.md and 1 other file (references) in skills/lsp-fix-all of blackwell-systems/agent-lsp.

• SKILL.md
• references/patterns.md

Open the folder on GitHubat commit 38ca488