Blockfrost · JSON Structure

Blockfrost Block Content Structure

block_content schema from Blockfrost API

Type: object Properties: 17 Required: 17

BlockchainCardanoCryptocurrencyDAppsNFTWeb3

block_content is a JSON Structure definition published by Blockfrost, describing 17 properties, of which 17 are required. It conforms to the https://json-structure.org/meta/core/v0/# meta-schema.

Properties

time height hash slot epoch epoch_slot slot_leader size tx_count output fees block_vrf op_cert op_cert_counter previous_block next_block confirmations

Meta-schema: https://json-structure.org/meta/core/v0/#

JSON Structure

{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/blockfrost/refs/heads/main/json-structure/blockfrost-block-content-structure.json",
  "name": "block_content",
  "description": "block_content schema from Blockfrost API",
  "required": [
    "time",
    "height",
    "hash",
    "slot",
    "epoch",
    "epoch_slot",
    "slot_leader",
    "size",
    "tx_count",
    "output",
    "fees",
    "block_vrf",
    "op_cert",
    "op_cert_counter",
    "previous_block",
    "next_block",
    "confirmations"
  ],
  "type": "object",
  "properties": {
    "time": {
      "description": "Block creation time in UNIX time",
      "type": "int32"
    },
    "height": {
      "description": "Block number",
      "type": "int32"
    },
    "hash": {
      "description": "Hash of the block",
      "type": "string"
    },
    "slot": {
      "description": "Slot number",
      "type": "int32"
    },
    "epoch": {
      "description": "Epoch number",
      "type": "int32"
    },
    "epoch_slot": {
      "description": "Slot within the epoch",
      "type": "int32"
    },
    "slot_leader": {
      "description": "Bech32 ID of the slot leader or specific block description in case there is no slot leader",
      "type": "string"
    },
    "size": {
      "description": "Block size in Bytes",
      "type": "int32"
    },
    "tx_count": {
      "description": "Number of transactions in the block",
      "type": "int32"
    },
    "output": {
      "description": "Total output within the block in Lovelaces",
      "type": "string"
    },
    "fees": {
      "description": "Total fees within the block in Lovelaces",
      "type": "string"
    },
    "block_vrf": {
      "description": "VRF key of the block",
      "type": "string"
    },
    "op_cert": {
      "description": "The hash of the operational certificate of the block producer",
      "type": "string"
    },
    "op_cert_counter": {
      "description": "The value of the counter used to produce the operational certificate",
      "type": "string"
    },
    "previous_block": {
      "description": "Hash of the previous block",
      "type": "string"
    },
    "next_block": {
      "description": "Hash of the next block",
      "type": "string"
    },
    "confirmations": {
      "description": "Number of block confirmations",
      "type": "int32"
    }
  }
}

Work with this as data

Every JSON Structure here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for json structure

4 MCP tools reach this

find_json_structuresBrowse and filter every JSON Structure in the catalog.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools

Call it yourself

curl for this page

This JSON Structure

curl "https://apis.io/api/v1/json-structures/blockfrost-block-content-structure"

All json structure

curl "https://apis.io/api/v1/json-structures?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.