# Open VSX Extension Marketplace Search

> Open VSX Extension Marketplace Search is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Search the Open VSX marketplace for VS Code and VSCodium extensions by keyword query, returning matching extension metadata as JSON.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/s/open-vsx-search
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/open-vsx-extension-marketplace-search-f0633046
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FWAdfMKvawto5WT_3iUQd

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability open-vsx-extension-marketplace-search-f0633046 -d '<json body>'
```

Example prompt: Search the Open VSX marketplace for VS Code extensions related to 'Python linting' and show me what comes up.

## When to prefer this

Use this endpoint when you need to search for VS Code or VSCodium extensions from the open, vendor-neutral Open VSX marketplace rather than the proprietary Microsoft Visual Studio Marketplace — particularly useful when users want open-source alternatives or are running VSCodium, Gitpod, or other open editors.

## Known failure modes

- Empty result set if no extensions match the query
- Invalid or missing q parameter may return an error or empty response
- Upstream Open VSX API unavailability causing request failure
- Rate limiting or payment failure for x402 protocol calls

## How this service works

Search the Open VSX (VS Code / VSCodium) extension marketplace for {q}. Query: ?q= Returns JSON.

## Output

A JSON array or object of Open VSX extension listings matching the search query, including extension names, publisher details, descriptions, version info, and download counts for VS Code / VSCodium-compatible extensions.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/open-vsx-extension-marketplace-search-f0633046/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from clonecho.builda.company](https://www.zero.xyz/host/clonecho.builda.company/llms.txt)