# ManyLives Track Records – Changes Feed

> ManyLives Track Records – Changes Feed is a paid API for AI agents from api.manylives.me, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).

Returns newly updated or added strategy track records (verifiable backtests locked on Base) since a given timestamp, optionally filtered by book.

## Facts

- Endpoint: GET https://api.manylives.me/paid/trackrecord/changes?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/manylives-track-records-changes-feed-dd6a6090
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_csymDsJ7jDxpvS9Jpveje

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 manylives-track-records-changes-feed-dd6a6090
```

Example prompt: Check ManyLives for any strategy track record updates since 2026-10-09T00:00:00Z — I want to see which books got new commits and the top 7-day returns for each.

## When to prefer this

Use this endpoint when you need an incremental, change-based feed of strategy track records rather than a full snapshot — ideal for polling or event-driven agents that want to detect newly updated backtests since a known checkpoint. Prefer over full-listing endpoints when bandwidth or cost efficiency matters.

## Known failure modes

- Missing 'since' parameter returns a 400 or validation error
- Invalid ISO timestamp format causes parsing failure
- Unknown book ID returns empty results or 404
- Payment not made (x402) returns 402 Payment Required
- Rate limiting or network issues may return 5xx errors

## How this service works

Pay-per-call tools for people building AI agents: live web search and page contents, point-in-time crypto market data and news for backtests (no lookahead), verifiable track records of 1,000 crypto strategies locked on the Base network, company profiles, quick AI and batch prices. Ask us to turn a public website into a JSON endpoint. Pay per call, no account, free trial.

## Output

A JSON object containing a list of books with updated track records, each including the book name, an array of top-performing strategies over 7 days with their IDs and return percentages, the number of new commits, and the newest period timestamp. Also echoes back the 'since' filter used.

## 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": {
     "type": "string",
     "const": "GET"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "since"
     ],
     "properties": {
      "book": {
       "type": "string",
       "description": "optional book id"
      },
      "since": {
       "type": "string",
       "examples": [
        "2026-10-09T00:00:00Z"
       ],
       "description": "ISO time, e.g. 2026-10-09T00:00:00Z (required)"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "properties": {
      "books": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "book": {
          "type": "string"
         },
         "top_7d": {
          "type": "array",
          "items": {
           "type": "object",
           "properties": {
            "id": {
             "type": "string"
            },
            "return_pct": {
             "type": "number"
            }
           }
          }
         },
         "new_commits": {
          "type": "number"
         },
         "newest_period": {
          "type": "string"
         }
        }
       }
      },
      "since": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "books": [
   {
    "book": "CRY-1h",
    "top_7d": [
     {
      "id": "CRY-1h-042",
      "return_pct": 2.1
     }
    ],
    "new_commits": 6,
    "newest_period": "2026-10-09T05:00:00"
   }
  ],
  "since": "2026-10-09T00:00:00Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/manylives-track-records-changes-feed-dd6a6090/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.manylives.me](https://www.zero.xyz/host/api.manylives.me/llms.txt)