/v1/config/spec | Alchemy Docs

1	curl https://eth-mainnetbeacon.g.alchemy.com/v2/docs-demo/eth/v1/config/spec

{
  "data": {
    "CONFIG_NAME": "mainnet",
    "PRESET_BASE": "mainnet",
    "TERMINAL_TOTAL_DIFFICULTY": "58750000000000000000000",
    "TERMINAL_BLOCK_HASH": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "TERMINAL_BLOCK_HASH_ACTIVATION_EPOCH": "18446744073709551615",
    "MIN_GENESIS_ACTIVE_VALIDATOR_COUNT": "16384",
    "MIN_GENESIS_TIME": "1606824000",
    "GENESIS_FORK_VERSION": "0x00000000",
    "ALTAIR_FORK_VERSION": "0x01000000",
    "BELLATRIX_FORK_VERSION": "0x02000000",
    "CAPELLA_FORK_VERSION": "0x03000000",
    "DENEB_FORK_VERSION": "0x04000000",
    "ELECTRA_FORK_VERSION": "0x05000000",
    "FULU_FORK_VERSION": "0x06000000",
    "SECONDS_PER_SLOT": "12",
    "DEPOSIT_CHAIN_ID": "1",
    "DEPOSIT_CONTRACT_ADDRESS": "0x00000000219ab540356cbb839cbe05303d7705fa"
  }
}

Retrieve the specification configuration used on this node.
The configuration includes: - Constants for all hard forks known by the beacon node (e.g. Phase0, Altair, Bellatrix, Capella, Deneb, Electra, etc.) - Presets for hard forks supplied to the node - Mainnet or testnet specific configuration values
Format rules: - Any value starting with 0x is returned as a hex string. - Numeric values are returned as a quoted integer.

Retrieve the specification configuration used on this node. The configuration includes: - Constants for all hard forks known by the beacon node (e.g. Phase0, Altair, Bellatrix, Capella, Deneb, Electra, etc.) - Presets for hard forks supplied to the node - Mainnet or testnet specific configuration values **Format rules:** - Any value starting with `0x` is returned as a hex string. - Numeric values are returned as a quoted integer.

Response

Specification constants and presets.

datamap from strings to strings or null

Key-value pairs of specification constants and configuration values.