# SubmitCheck Dead Directories API

> SubmitCheck Dead Directories API is a paid API for AI agents from submitcheck.appin60.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-23).

Returns a filtered list of dead, moved, or unreachable startup/SaaS/AI-tool submission directories from a curated set of 516, verified live in October 2026.

## Facts

- Endpoint: GET https://submitcheck.appin60.com/api/v1/dead-directories?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/submitcheck-dead-directories-api-efb34f92
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Vno30A05XKu5fX38RilQs

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 submitcheck-dead-directories-api-efb34f92
```

Example prompt: Show me all the dead startup and AI-tool submission directories from SubmitCheck's October 2026 dataset — I want to know which ones no longer resolve so I can skip them during my product launch.

## When to prefer this

Use this endpoint when you need a pre-verified, dated snapshot of which startup/SaaS/AI-tool directories are dead, moved, or unreachable — specifically sourced from 516 directories aggregated across 11 public lists and checked in October 2026. Prefer this over manual checking or general web search when you want structured, filterable results with status labels and list-frequency signals, without having to probe each directory yourself.

## Known failure modes

- Invalid 'kind' enum value returns a validation error
- No results returned if no directories match the requested status filter
- Service may return stale data if the October 2026 check has not been refreshed
- Network timeout if the upstream API is unavailable
- Payment of 0.005 USDC required per call; missing payment returns 402

## How this service works

Launch directories from 11 popular public lists that were dead, unreachable, erroring or redirecting to another site on our Oct 2026 live check (DNS re-checked over DoH). Drop them from a launch plan. Optional filter by status kind.

## Output

A JSON object containing a count and array of directory entries, each with the domain name, a human-readable status string (e.g. 'dead: domain does not resolve'), the UTC date the check was performed, and how many public lists that directory appears in.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "kind": {
       "enum": [
        "dead",
        "moved",
        "unreachable",
        "down",
        "any"
       ],
       "type": "string",
       "description": "Status kind filter (default any)"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "kind": "dead",
  "count": 1,
  "results": [
   {
    "domain": "launched.io",
    "status": "dead: domain does not resolve",
    "checked_utc": "2026-10-14",
    "in_n_public_lists": 3
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/submitcheck-dead-directories-api-efb34f92/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from submitcheck.appin60.com](https://www.zero.xyz/host/submitcheck.appin60.com/llms.txt)