# N-PORT Change Filing Lookup (nportchg)

> N-PORT Change Filing Lookup (nportchg) is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.4/call, status unknown (last checked 2026-10-12).

Retrieves N-PORT change filing data for a registered fund by CIK identifier, gated behind a $0.40 USDC x402 micropayment.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/nportchg/%7Bcik%7D?utm_source=zero.xyz
- Price: $0.4/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/n-port-change-filing-lookup-nportchg-164aaa5f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Vb7MqJeJKvg6Lk2jaX4rl

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 n-port-change-filing-lookup-nportchg-164aaa5f
```

Example prompt: Can you pull the N-PORT change filing data for the fund with CIK 0001350049? I'll need to pay the $0.40 USDC fee to get the result.

## When to prefer this

Use this endpoint when you need N-PORT change filing data for a specific SEC-registered fund and can pay a $0.40 USDC micropayment per call via the x402 protocol with OpenX402 as facilitator. Prefer this over scraping SEC EDGAR directly when you need a structured JSON response gated by a programmable micropayment.

## Known failure modes

- HTTP 402 returned if the x402 micropayment has not been completed — includes EIP-3009 payment challenge in response body
- Invalid or non-existent CIK returns an error or empty result
- CIK must be properly formatted (e.g. 0001350049) — malformed CIK may fail
- Facilitator other than OpenX402 will not be accepted for payment settlement

## How this service works

Paid x402 diagnostics. Unpaid paid-SKU requests return HTTP 402 with eip3009 extras. Facilitator: OpenX402 only.

## Output

Returns a JSON object containing the SKU identifier ('nportchg'), a title ('N-PORT Change'), the price ($0.40), and associated filing data for the requested fund registrant CIK. Unpaid requests return HTTP 402 with EIP-3009 payment details.

## 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": {
      "cik": {
       "type": "string",
       "description": "Fund registrant CIK in the path, for example 0001350049"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  },
  "inputSchema": {
   "type": "object",
   "required": [
    "type",
    "properties"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "object"
    },
    "required": {
     "type": "array",
     "items": {
      "type": "string"
     }
    },
    "properties": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "nportchg",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.40",
  "title": "N-PORT Change"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/n-port-change-filing-lookup-nportchg-164aaa5f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from openclawproductions.com](https://www.zero.xyz/host/openclawproductions.com/llms.txt)