# Messari Funding Rounds Investor Participation

> Messari Funding Rounds Investor Participation is a paid API for AI agents from api.messari.io, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-16).

Returns investor participation data across cryptocurrency funding rounds, filterable by stage, investor, entity, amount, and token funding type.

## Facts

- Endpoint: GET https://api.messari.io/funding/v1/rounds/investors
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/messari-39b911e3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_slyZnacbT-kH3-FW91-pk

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-39b911e3
```

Example prompt: Show me all the investors who participated in Series A crypto funding rounds announced after January 2023 that raised at least $5 million, and limit the results to 25 per page — token-funded rounds only.

## When to prefer this

Use this endpoint when you need to identify which investors participated in specific crypto funding rounds, filter by funding stage, entity, amount range, or date window, and need structured investor-level participation data. Prefer this over the sibling funding rounds endpoint when the focus is on investor identity and participation patterns rather than round-level aggregates.

## Known failure modes

- Invalid investorId or fundedEntityId returns empty results or 404
- Invalid stage or type enum values may return 400 bad request
- announcedAfter/announcedBefore date format errors return 400
- raisedAmountMin greater than raisedAmountMax returns error or empty set
- Payment not provided or insufficient triggers 402 Payment Required
- Rate limiting or quota exceeded returns 429

## How this service works

Get investor participation across funding rounds and stages.

## Output

A paginated list of investor participation records across crypto funding rounds, including investor IDs, funded entity IDs, funding stage, round type, raised amounts, and announcement dates, filtered according to the provided parameters.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "page": {
   "type": "integer",
   "minimum": 1
  },
  "type": {
   "type": "array",
   "items": {
    "type": "string"
   }
  },
  "limit": {
   "type": "integer",
   "minimum": 1
  },
  "stage": {
   "type": "array",
   "items": {
    "type": "string"
   }
  },
  "investorId": {
   "type": "array",
   "items": {
    "type": "string"
   }
  },
  "isTokenFunded": {
   "type": "boolean"
  },
  "announcedAfter": {
   "type": "string"
  },
  "fundedEntityId": {
   "type": "array",
   "items": {
    "type": "string"
   }
  },
  "announcedBefore": {
   "type": "string"
  },
  "raisedAmountMax": {
   "type": "number"
  },
  "raisedAmountMin": {
   "type": "number"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "example": {
  "data": [
   {
    "persons": [],
    "projects": [],
    "organizations": [
     {
      "id": "org-001",
      "name": "Example Ventures"
     }
    ],
    "fundingRoundId": "round-001"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/messari-39b911e3/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)