# Messari Fund Managers API

> Messari Fund Managers API is a paid API for AI agents from api.messari.io, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).

Returns organizations and individuals who manage crypto investment funds, with filtering by manager ID and date/amount ranges.

## Facts

- Endpoint: GET https://api.messari.io/funding/v1/funds/managers
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/messari-fund-managers-api-89256783
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xmcL7WU3ua_U4ceoP3jrW

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 messari-fund-managers-api-89256783
```

Example prompt: Show me the first 20 organizations and people managing crypto investment funds on Messari that were announced after January 1, 2023, and raised at least $10 million.

## When to prefer this

Use this endpoint when you need to identify the human or organizational entities responsible for managing crypto investment funds — especially useful for due diligence, competitive research, or building fund-manager relationship graphs. Prefer this over the funds listing endpoint when the focus is on who manages funds rather than fund financials.

## Known failure modes

- Invalid managerId format returns empty or error response
- announcedAfter/announcedBefore date strings in wrong format cause parsing errors
- raisedAmountMin greater than raisedAmountMax returns empty result set
- Exceeding page/limit bounds returns empty data array
- Missing payment (402 Not Paid) if x402 payment header is absent or insufficient
- Rate limiting if too many calls are made in quick succession

## How this service works

Get organizations and people managing crypto investment funds.

## Output

A paginated list of fund manager records, each containing a fund ID, associated persons (with IDs and names), projects, and organizations (with IDs and names) that manage the fund.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "page": {
   "type": "integer",
   "minimum": 1
  },
  "limit": {
   "type": "integer",
   "minimum": 1
  },
  "managerId": {
   "type": "array",
   "items": {
    "type": "string"
   }
  },
  "announcedAfter": {
   "type": "string"
  },
  "announcedBefore": {
   "type": "string"
  },
  "raisedAmountMax": {
   "type": "number"
  },
  "raisedAmountMin": {
   "type": "number"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "example": {
  "data": [
   {
    "fundId": "fund-001",
    "persons": [
     {
      "id": "person-001",
      "name": "Alex Founder"
     }
    ],
    "projects": [],
    "organizations": [
     {
      "id": "org-001",
      "name": "Example Ventures"
     }
    ]
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/messari-fund-managers-api-89256783/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.messari.io](https://www.zero.xyz/host/api.messari.io/llms.txt)