Lsp Cross Repo

What it does

When your agent uses it

• Refactoring a shared library and need to understand how consumers use it
• Tasks that involve Refactoring

Example prompts

• “/lsp-cross-repo”

Requirements

• Compatibility (from SKILL.md): Requires the agent-lsp MCP server (github.com/blackwell-systems/agent-lsp)
• Pre-approved tools (allowed-tools): mcp__lsp__start_lsp, mcp__lsp__find_symbol, mcp__lsp__get_cross_repo_references, mcp__lsp__add_workspace_folder, mcp__lsp__list_workspace_folders, mcp__lsp__go_to_implementation, mcp__lsp__find_callers, mcp__lsp__inspect_symbol

Workflow steps

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

1. 1Initialize the primary workspace
2. 2Locate the library symbol
3. 3Find all cross-repo references (primary step)
4. 4Callers and implementations (optional)

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__start_lsp
  • mcp__lsp__find_symbol
  • mcp__lsp__get_cross_repo_references
  • mcp__lsp__add_workspace_folder
  • mcp__lsp__list_workspace_folders
  • mcp__lsp__go_to_implementation
  • mcp__lsp__find_callers
  • mcp__lsp__inspect_symbol

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  No scripts in the folder and no shell commands in SKILL.md.

  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 Cross Repo loads about 1.1k tokens when it runs. Until then it costs about 48 tokens; SKILL.md has 308 words of instructions outside code blocks.

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

~48

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

~1.1k

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). 308 words, ~1,098 tokens.

name

lsp-cross-repo

description

Cross-repository analysis — find all callers of a library symbol in one or more consumer repos. Use when refactoring a shared library and need to understand how consumers use it.

allowed-tools

mcp__lsp__start_lsp, mcp__lsp__find_symbol, mcp__lsp__get_cross_repo_references, mcp__lsp__add_workspace_folder, mcp__lsp__list_workspace_folders, mcp__lsp__go_to_implementation, mcp__lsp__find_callers, mcp__lsp__inspect_symbol

compatibility

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

argument-hint

[symbol-name] in [library-file:line:col] used by [consumer-root ...]

user-invocable

true

license

MIT

metadata.required-capabilities

referencesProvider

metadata.optional-capabilities

implementationProvider callHierarchyProvider workspaceSymbolProvider

mcp__lsp__start_lsp({ "root_dir": "/path/to/library" })

mcp__lsp__find_symbol({ "query": "<symbol-name>" })

mcp__lsp__get_cross_repo_references({
  "symbol_file": "/abs/path/to/library/file.go",
  "line": <line>,
  "column": <column>,
  "consumer_roots": [
    "/abs/path/to/consumer-a",
    "/abs/path/to/consumer-b"
  ]
})

mcp__lsp__find_callers({
  "file_path": "<library-file>",
  "line": <line>,
  "column": <column>,
  "direction": "incoming"
})

mcp__lsp__go_to_implementation({
  "file_path": "<library-file>",
  "line": <line>,
  "column": <column>
})

## Library-internal references
- file:line — brief context

## Consumer references

### /path/to/consumer-a
- file:line — brief context

### /path/to/consumer-b
- file:line — brief context

# Refactoring ParseConfig in a shared config library used by 3 services

start_lsp(root_dir="/repos/config-lib")
find_symbol(query="ParseConfig")        # find definition → file:42:6
get_cross_repo_references(
  symbol_file="/repos/config-lib/pkg/config/parser.go",
  line=42, column=6,
  consumer_roots=["/repos/api-service", "/repos/worker-service", "/repos/batch-job"]
)
# → library_references: 2
# → consumer_references: {api-service: [main.go:14, app.go:31], worker-service: [runner.go:8]}
# → warnings: []

© 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-cross-repo of blackwell-systems/agent-lsp.

Open the folder on GitHubat commit 38ca488