# ForwardLane Repository Rankings

> ForwardLane Repository Rankings is a paid API for AI agents from forwardlane.pay.zeroclick.io, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-12).

Returns ranked repositories with composite quality scores, tiers, language, and project metadata, optionally filtered by tier or limited to top N results.

## Facts

- Endpoint: GET https://forwardlane.pay.zeroclick.io/api/rankings?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/forwardlane-repository-rankings-80d050f5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_n11-C--GX4xdXl6lg9dMq

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 forwardlane-repository-rankings-80d050f5
```

Example prompt: Show me the top 50 repositories ranked by composite quality score from ForwardLane, filtered to only tier 1 results.

## When to prefer this

Use this endpoint when you need a pre-ranked, scored leaderboard of repositories without needing to search by name or code content. Prefer this over the search or filter endpoints when the goal is to surface the highest-quality or top-tier repositories by composite score rather than by keyword or semantic similarity.

## Known failure modes

- Invalid tier value returns an empty list or error
- top_n value exceeding maximum of 500 returns a validation error
- No repositories indexed yet results in an empty rankings list
- Payment not provided or insufficient returns a 402 error

## How this service works

Rankings with rank, name, composite score, tier, language, and project.

## Output

An ordered list of repositories with each entry containing rank position, repository name, composite quality score, quality tier (integer), programming language, and project identifier. Results are sorted by composite score descending by default and can be limited to a top-N count or filtered to a specific tier.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "tier": {
       "type": "integer"
      },
      "top_n": {
       "type": "integer",
       "default": 20,
       "maximum": 500,
       "minimum": 1
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/forwardlane-repository-rankings-80d050f5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from forwardlane.pay.zeroclick.io](https://www.zero.xyz/host/forwardlane.pay.zeroclick.io/llms.txt)