# zFinia Machine Economy Changes-Since

> zFinia Machine Economy Changes-Since is a paid API for AI agents from api.zfinia.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Returns a paginated delta feed of machine-economy intelligence events (news, infrastructure changes, agent payment activity) that occurred after a given cursor timestamp.

## Facts

- Endpoint: POST https://api.zfinia.com/v1/intelligence/changes-since
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/zfinia-machine-economy-changes-since-5216249a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_g5zKAd6urhzt--lqsSa5f

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 zfinia-machine-economy-changes-since-5216249a -d '<json body>'
```

Example prompt: Pull me the latest machine economy intelligence from zFinia since my last checkpoint at 2026-09-01T00:00:00Z — up to 20 items, with full evidence fields included.

## When to prefer this

Choose this endpoint when you need incremental, cursor-paginated updates on machine economy events rather than a full snapshot. It is purpose-built for polling loops where an agent already holds a prior nextCursor and wants only new material since that point, minimizing redundant data transfer and cost.

## Known failure modes

- Missing cursor and since fields returns a validation error requiring at least one
- Stale or malformed cursor string may return an empty items array or an error
- maxItems exceeding 50 returns a schema validation error
- Network or payment failure via x402 returns HTTP 402 or 5xx
- Empty result set when no new events exist since the given cursor

## How this service works

Independent data, news and infrastructure intelligence tracking how autonomous agents discover, buy, sell and pay for useful things.

## Output

A JSON object containing an array of intelligence events (each with eventId, headline, summary, freshness, and evidence tier), a nextCursor for the next poll, a count of items returned, a truncated flag, usage rights, generatedAt timestamp, and optional market movement metrics. High-resolution mode adds full evidence fields to each item.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "anyOf": [
      {
       "required": [
        "cursor"
       ]
      },
      {
       "required": [
        "since"
       ]
      }
     ],
     "properties": {
      "since": {
       "type": "string",
       "maxLength": 2048,
       "minLength": 1,
       "description": "Alias of cursor. Use the previous nextCursor so only later material changes are returned."
      },
      "cursor": {
       "type": "string",
       "maxLength": 2048,
       "minLength": 1,
       "description": "Previous nextCursor (opaque or ISO-8601). Required for the paid delta unless since is set. Pass this back on the next poll."
      },
      "maxItems": {
       "type": "integer",
       "maximum": 50,
       "minimum": 1
      },
      "include_high_resolution": {
       "type": "boolean",
       "description": "When true, paid items include full evidence fields already present on the public newswire item."
      }
     },
     "description": "Paid delta for a caller that already has a zFinia cursor. Supply cursor or since (the previous nextCursor).",
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "request_id",
      "service_id",
      "service_version",
      "schema",
      "generatedAt",
      "since",
      "nextCursor",
      "count",
      "items",
      "truncated",
      "usageRights"
     ],
     "properties": {
      "count": {
       "type": "integer"
      },
      "items": {
       "type": "array"
      },
      "since": {
       "type": "string"
      },
      "schema": {
       "type": "string"
      },
      "product": {
       "type": "string"
      },
      "truncated": {
       "type": "boolean"
      },
      "nextCursor": {
       "type": "string"
      },
      "reques
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 1,
  "items": [
   {
    "eventId": "evt_x402_launch_20250506",
    "summary": "x402 uses HTTP 402 so agents can pay for APIs without accounts.",
    "headline": "Coinbase launches x402 HTTP-native payments",
    "freshness": "archive",
    "evidenceTier": "TIER_A"
   }
  ],
  "since": "2026-09-01T00:00:00.000Z",
  "schema": "zfinia-newswire-1",
  "product": "machine_economy_changes_since",
  "truncated": false,
  "nextCursor": "2026-09-07T00:00:00.000Z",
  "request_id": "example-request",
  "service_id": "machine_economy_changes_since",
  "generatedAt": "2026-09-07T00:00:00.000Z",
  "priceAtomic": "10000",
  "usageRights": "Caller may use returned JSON for their own systems.",
  "schemaVersion": "zfinia-newswire-1",
  "highResolution": true,
  "marketMovements": {
   "resourcesDelta": 0
  },
  "service_version": "1"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/zfinia-machine-economy-changes-since-5216249a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.zfinia.com](https://www.zero.xyz/host/api.zfinia.com/llms.txt)