# x402-factory Federal Contract Awards Delta

> x402-factory Federal Contract Awards Delta is a paid API for AI agents from x402-factory.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns only federal contract awards added or changed since a given cursor, enabling efficient incremental polling without re-fetching the full dataset.

## Facts

- Endpoint: GET https://x402-factory.com/v1/contracts/awards/delta
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-factory-federal-contract-awards-delta-bcb15dbe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lysmaQfu54dcRk3-ZrR39

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 x402-factory-federal-contract-awards-delta-bcb15dbe
```

Example prompt: Check for any new or updated federal contract awards since my last cursor — use the next_cursor from my previous call to fetch only the delta, and tell me how many changed and what the new cursor is.

## When to prefer this

Choose this endpoint when you need to efficiently sync or monitor federal contract awards incrementally without re-fetching the entire dataset. It is ideal for agents running periodic polling loops, ETL pipelines, or change-detection workflows where bandwidth and cost efficiency matter. Use the free sibling /v1/contracts/awards/changes for polling without cost when delta precision is less critical.

## Known failure modes

- Invalid or expired cursor in 'since' parameter returns an error or resets to current state
- Missing required fields in response if upstream data source is temporarily unavailable
- Rate limiting or payment failure (x402 micropayment not processed) blocks the request
- Stale cursor from a very old call may not be honored, requiring a fresh bootstrap

## How this service works

Only the federal contract awards changed since your cursor (delta of /v1/contrac — Keyset delta of /v1/contracts/awards: pass since=<next_cursor from your last call> and get only the federal contract awards added or changed after it, plus changed_count and a new next_cursor. Omit since once to bootstrap. Cursors are stable across restarts. Poll the free sibling /v1/contracts/awards/changes for…

## Output

Returns a JSON object containing an array of changed/new federal contract award rows (each with id, vendor, agency, sub_agency, description, value_usd, and award_date), a changed_count integer indicating how many records changed, an as_of timestamp, and a next_cursor opaque string for the subsequent incremental call.

## 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",
     "required": [],
     "properties": {
      "since": {
       "type": "string",
       "maxLength": 300,
       "minLength": 4,
       "description": "Opaque cursor from a previous next_cursor; omit once to bootstrap a cursor at now"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "data",
      "meta"
     ],
     "properties": {
      "data": {
       "type": "object",
       "required": [
        "rows",
        "changed_count",
        "next_cursor",
        "as_of"
       ],
       "properties": {
        "rows": {
         "type": "array",
         "items": {
          "type": "object",
          "required": [
           "id",
           "vendor",
           "agency",
           "sub_agency",
           "description",
           "value_usd",
           "award_date"
          ],
          "properties": {
           "id": {
            "type": "string"
           },
           "agency": {
            "type": "string"
           },
           "vendor": {
            "type": "string"
           },
           "value_usd": {
            "type": "number"
           },
           "award_date": {
            "type": "string"
           },
           "sub_agency": {
            "anyOf": [
             {
              "type": "string"
             },
             {
              "type": "null"
             }
            ]
           },
           "description": {
            "type": "string"
           }
          },
          "additionalProperties": false
         }
        },
        "as_of": {
         "type": "string"
        },
        "next_cursor": {
         "type": "string"
        },
        "changed_count": {
         "type": "integer",
         "maximum": 9007199254740991,
         "minimum": 0
        }
       },
       "additionalProperties": false
      },
      "meta": {
       "type": "object"
      }
     }
    }
   }
  }

… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-factory-federal-contract-awards-delta-bcb15dbe/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-factory.com](https://www.zero.xyz/host/x402-factory.com/llms.txt)