# DevMatch Find Similar Projects

> DevMatch Find Similar Projects is a paid API for AI agents from mcp.dev-match.xyz, paid per call via x402, $0.75/call, status unknown (last checked 2026-09-15).

Given a GitHub repository, returns a ranked list of similar open-source projects based on verified contribution signals

## Facts

- Endpoint: POST https://mcp.dev-match.xyz/mcp/x402/find_similar_projects
- Price: $0.75/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/devmatch-find-similar-projects-2cdedab2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SBxWQeBujqsdxT8AefGs6

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 devmatch-find-similar-projects-2cdedab2 -d '<json body>'
```

Example prompt: Find up to 10 open-source projects similar to vercel/next.js on GitHub using DevMatch's project similarity search.

## When to prefer this

Use this endpoint when you need to discover GitHub repositories that are semantically or functionally similar to a given repo, especially when you want results ranked by real contribution signals rather than keyword matching. Prefer this over generic search APIs when the user provides a specific repository as a reference point and wants a curated, ranked list of alternatives or related projects.

## Known failure modes

- Invalid or non-existent repository — returns an error if the owner/name or URL does not correspond to a real GitHub repo
- HTTP 402 payment required — unauthenticated calls return an x402 USDC challenge on Base requiring $0.75 payment
- Limit out of range — values below 1 or above 25 are rejected by schema validation
- No similar projects found — sparse or niche repos may return an empty or very short list
- Rate limiting — excessive calls without monthly-credit auth may be throttled

## How this service works

Pay-per-call access to engineers ranked by verified open-source contributions and other public work. Unpaid calls to the paid resource return an x402 HTTP 402 challenge (USDC on Base). Authenticate with OAuth or an X-API-Key for monthly-credit billing instead.

## Output

A JSON object containing a 'projects' array of up to 25 similar repositories, each with a 'full_name' (owner/repo) and 'description' field, ranked by similarity to the input repository based on verified open-source contribution signals.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "repo"
   ],
   "properties": {
    "repo": {
     "type": "string",
     "description": "owner/name or github URL"
    },
    "limit": {
     "type": "integer",
     "maximum": 25,
     "minimum": 1
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "view": "similar_projects",
  "projects": [
   {
    "full_name": "owner/repo",
    "description": "Similar project"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/devmatch-find-similar-projects-2cdedab2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp.dev-match.xyz](https://www.zero.xyz/host/mcp.dev-match.xyz/llms.txt)