# OSF Open Source Filings — Purchase Verified Record by ID

> OSF Open Source Filings — Purchase Verified Record by ID is a paid API for AI agents from api.osf-master-server.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Fetches a single provenance-stamped public-domain government or scientific record by numeric ID, paying $0.05 USDC per record via x402 micropayment on Base

## Facts

- Endpoint: GET https://api.osf-master-server.com/x402/buy/standard/%7Brecord_id%7D
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/osf-open-source-filings-purchase-verified-record-by-id-ff31af55
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LA_YnIrXiJyz7EUTSZYcg

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 osf-open-source-filings-purchase-verified-record-by-id-ff31af55
```

Example prompt: Pull OSF record 12345 in JSON format — I need the full record data and its provenance URL so I can confirm where it originally came from.

## When to prefer this

Use this endpoint when you already have a specific OSF record_id and need the full verified record along with its provenance URL in a single paid call. Prefer this over the OSF search endpoints when you know exactly which record you want and need authoritative sourcing for citation, compliance, or downstream agent reasoning. This is the right choice when data verifiability and a direct link to the original government or scientific source are required, not just the data itself.

## Known failure modes

- Record ID not found — returns an error or non-success status if the integer ID does not exist in the OSF catalog
- Payment failure — x402 micropayment not fulfilled, request blocked before data is returned
- Invalid format parameter — request rejected if format query param is missing or unsupported
- Rate limiting — too many requests in a short window may be throttled
- Network timeout — upstream government data source temporarily unavailable

## How this service works

OSF is a live marketplace of provenance stamped public domain government and scientific data, built for autonomous agents that pay per record over x402 micropayments on Base. A paid MCP server in the official MCP Registry, discoverable on the Coinbase CDP Bazaar.

## Output

Returns a JSON object containing the record's numeric ID, a status field, a nested data object with the record's domain-specific fields and a data_type label, the source identifier (e.g. CISA_KEV), and a provenance_url pointing to the canonical government or scientific source where the data originated.

## 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"
    },
    "pathParams": {
     "type": "object"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "format"
     ],
     "properties": {
      "format": {
       "type": "string",
       "description": "Response format (json)."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "status",
      "record_id",
      "data",
      "provenance_url"
     ],
     "properties": {
      "data": {
       "type": "object"
      },
      "source": {
       "type": "string"
      },
      "status": {
       "type": "string"
      },
      "data_type": {
       "type": "string"
      },
      "record_id": {
       "type": "integer"
      },
      "provenance_url": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "data_type": "...",
   "record_key": "SRC:ID"
  },
  "source": "CISA_KEV",
  "status": "success",
  "data_type": "CISA Known Exploited Vulnerability",
  "record_id": 12345,
  "provenance_url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/osf-open-source-filings-purchase-verified-record-by-id-ff31af55/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.osf-master-server.com](https://www.zero.xyz/host/api.osf-master-server.com/llms.txt)