| name | lcp-usage |
| description | This skill should be used when the user writes code against a Python library, asks "how do I use X", encounters an AttributeError or ImportError on a library symbol, or asks "what parameters does X.Y take". Guides the agent to verify APIs through the lcp MCP server's resolve → search → get_symbol workflow before writing code. |
LCP Usage
Use the LCP (Library Context Protocol) MCP server as the ground-truth
reference for Python library APIs. It introspects the installed package, so
it reflects the exact installed version — verify against it instead of
guessing from memory.
If a library name is provided via arguments, resolve it immediately:
resolve_library("$ARGUMENTS")
When to reach for it
- Before importing or calling a library you haven't verified this session.
- On any
ImportError / AttributeError involving a library symbol.
- Whenever you are about to write a signature you are not 100% sure of —
a plausible guess is the top source of broken code.
The 3-call workflow
resolve_library("requests") # 1. always first
search("send get request") # 2. ranked discovery + import lines
get_symbol(ids=["requests.api:get"]) # 3. exact signature before coding
get_overview() shows the module tree; search("", module=..., kind=...)
browses a module's contents.
Tool reference
| Tool | Purpose |
|---|
resolve_library(name, version?) | Load a library (cache / scan / registry). Always call first. |
search(query, library?, module?, kind?, limit?) | Ranked symbol search; empty query = browse. Hits include the import line and present the documented (re-export) id, with resolved_via_alias naming the definition site. |
get_symbol(ids, library?) | Batch: full signatures, params with descriptions, return types + returns_description, raises conditions, docstring examples, import lines; classes inline member summaries. Accepts canonical and alias ids alike — the import line is the documented path, copy it as-is. |
get_overview(library?) | Library identity + module tree with symbol counts. |
Rules
- With ≥2 libraries loaded, pass
library= on every call (an
ambiguous_library error lists the loaded names if you forget).
- Errors are
{"error": {"code", "message", "hint", ...}} — follow the hint.
- If no
lcp server is connected, suggest:
claude mcp add lcp -- lcp serve-all.
