Code Index MCP is a Model Context Protocol server that indexes code repositories so language models can search, examine, and navigate their contents. It supports tasks such as code review, refactoring, documentation, debugging, and architecture analysis. The catalogue skills help coding agents use the server's repository analysis workflow.
Borrowing it
Nothing to install: this file belongs to johnhuang316/code-index-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/johnhuang316/code-index-mcp/master/.agents/skills/verify-multilang-support/SKILL.mdgit clone --depth 1 https://github.com/johnhuang316/code-index-mcpWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/johnhuang316/code-index-mcp/verify-multilang-support)<a href="https://agentmods.dev/skills/johnhuang316/code-index-mcp/verify-multilang-support"><img src="https://agentmods.dev/badge/skills/johnhuang316/code-index-mcp/verify-multilang-support/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/johnhuang316/code-index-mcp/verify-multilang-support"><img src="https://agentmods.dev/badge/skills/johnhuang316/code-index-mcp/verify-multilang-support.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00043 | $0.00851 |
| Opus 5 | $0.00022 | $0.00426 |
| Sonnet 5 | $0.00009 | $0.00170 |
| Haiku 4.5 | $0.00004 | $0.00085 |
Grade A, and why
verify-multilang-support scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Verify Multi-Language Support
Overview
Verify search and deep indexing for every supported sample language. Non-empty results are insufficient; summaries must match maintained baselines.
When to Use
- A language strategy, tree-sitter query, symbol range, indexer, or sample changes.
- Search, summaries, symbol bodies, imports, or
called_bymay have regressed.
Run focused unit tests first when a specific failing strategy is known.
Verification Loop
Use each row in Targets, resolving paths below test/sample-projects.
- Call
set_project_pathwith the sample project's absolute path. - Call
refresh_index, thenbuild_deep_index. - Run the query with
search_code_advancedin literal mode. - Call
get_file_summaryfor the preferred file, then read the baselines and compare:- exact
language symbol_countat or above the minimum- every expected function, method, class, import, and
called_byrelationship
- exact
- Call
get_symbol_body; requirestatus: successand non-emptycode. - Record
SEARCH,SUMMARY,SYMBOL_BODY, andFINAL. Any failed assertion makes the language FAIL.
After the final target, restore set_project_path to the repository root and call
refresh_index.
Targets
| Language | Relative path | Literal query | Expected symbol | Preferred file |
|---|---|---|---|---|
| Python | python |
class UserManager |
cli |
user_management/cli.py |
| Go | go/user-management |
UserService |
CreateUser |
internal/services/user_service.go |
| Java | java/user-management |
class UserManager |
UserManager.createUser |
src/main/java/com/example/usermanagement/services/UserManager.java |
| JavaScript | javascript/user-management |
class UserService |
UserService.createUser |
src/services/UserService.js |
| TypeScript | typescript/user-management |
class UserService |
user |
src/services/UserService.ts |
| C# | csharp/orders |
class OrderService |
Orders.Services.OrderService.Create |
src/Orders/Services/OrderService.cs |
| Kotlin | kotlin/notes-api |
class NotesService |
NotesService.createNote |
src/main/kotlin/com/example/notes/NotesService.kt |
| Rust | rust/conversation |
struct Conversation |
Conversation.append |
src/conversation.rs |
| Objective-C | objective-c |
interface UserManager |
UserManager.addUser |
UserManager.m |
| Zig | zig/code-index-example |
fn main |
main |
src/main.zig |
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 79 lines · 43 tokens per session scan A 77e633a8fcb8
verify-multilang-support is a skill published in the GitHub repository johnhuang316/code-index-mcp (1,005 stars, last pushed 1mo ago), licensed MIT. It adds 43 tokens to every session and 851 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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