diff --git a/.editorconfig b/.editorconfig
index 8eba899188..b242724b7c 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -29,7 +29,6 @@ max_line_length=100
 [*.json]
 indent_style=space
 indent_size=2
-max_line_length=100
 
 [*.md]
 trim_trailing_whitespace=false
diff --git a/polkadot-js/alphanet-types.json b/polkadot-js/alphanet-types.json
index 40ba01d70a..2e8c75d325 100644
--- a/polkadot-js/alphanet-types.json
+++ b/polkadot-js/alphanet-types.json
@@ -8,18 +8,96 @@
     "nonce": "U256",
     "balance": "u128"
   },
+  "TransactionCondition": {
+    "_enum": {
+      "block": "u64",
+      "time": "u64"
+    }
+  },
   "Transaction": {
+    "block_hash": "Option<H256>",
+    "block_number": "Option<U256>",
+    "chain_id": "Option<u64>",
+    "condition": "Option<TransactionCondition>",
+    "creates": "Option<H160>",
+    "from": "H160",
+    "gas": "U256",
+    "gas_price": "U256",
+    "hash": "H256",
+    "input": "Bytes",
     "nonce": "U256",
-    "action": "String",
-    "gas_price": "u64",
-    "gas_limit": "u64",
-    "value": "U256",
-    "input": "Vec<u8>",
-    "signature": "Signature"
-  },
-  "Signature": {
-    "v": "u64",
-    "r": "H256",
-    "s": "H256"
+    "public_key": "Option<H512>",
+    "r": "U256",
+    "raw": "Bytes",
+    "s": "U256",
+    "standard_v": "U256",
+    "to": "Option<H160>",
+    "transaction_index": "Option<U256>",
+    "v": "U256",
+    "value": "U256"
+  },
+  "TransactionStatus": {
+    "transaction_hash": "H256",
+    "transaction_index": "u32",
+    "from": "H160",
+    "to": "Option<H160>",
+    "contract_address": "Option<H160>",
+    "logs": "Vec<Log>",
+    "logs_bloom": "Bloom"
+  },
+  "Receipt": {
+    "transaction_hash": "Option<H256>",
+    "transaction_index": "Option<U256>",
+    "block_hash": "Option<H256>",
+    "from": "Option<H160>",
+    "to": "Option<H160>",
+    "block_number": "Option<U256>",
+    "cumulative_gas_used": "U256",
+    "gas_used": "Option<U256>",
+    "contract_address": "Option<H160>",
+    "logs": "Vec<Log>",
+    "state_root": "Option<H256>",
+    "logs_bloom": "H2048",
+    "status_code": "Option<U64>"
+  },
+  "ExitReason": {
+    "_enum": {
+      "Succeed": "ExitSucceed",
+      "Error": "ExitError",
+      "Revert": "ExitRevert",
+      "Fatal": "ExitFatal"
+    }
+  },
+  "ExitSucceed": {
+    "_enum": ["Stopped", "Returned", "Suicided"]
+  },
+  "ExitError": {
+    "_enum": [
+      "StackUnderflow",
+      "StackOverflow",
+      "InvalidJump",
+      "InvalidRange",
+      "DesignatedInvalid",
+      "CallTooDeep",
+      "CreateCollision",
+      "CreateContractLimit",
+      "OutOfOffset",
+      "OutOfGas",
+      "OutOfFund",
+      "PCUnderflow",
+      "CreateEmpty",
+      "Other(Cow<'static, str>)"
+    ]
+  },
+  "ExitRevert": {
+    "_enum": ["Reverted"]
+  },
+  "ExitFatal": {
+    "_enum": [
+      "NotSupported",
+      "UnhandledInterrupt",
+      "CallErrorAsFatal(ExitError)",
+      "Other(Cow<'static, str>)"
+    ]
   }
 }
diff --git a/polkadot-js/frontier-rpc-types.json b/polkadot-js/frontier-rpc-types.json
new file mode 100644
index 0000000000..5d03efe31f
--- /dev/null
+++ b/polkadot-js/frontier-rpc-types.json
@@ -0,0 +1,245 @@
+{
+  "eth": {
+    "accounts": {
+      "description": "Returns accounts list.",
+      "params": [],
+      "type": "Vec<H160>"
+    },
+    "blockNumber": {
+      "description": "Returns balance of the given account.",
+      "params": [],
+      "type": "U256"
+    },
+    "call": {
+      "description": "Call contract, returning the output data.",
+      "params": [
+        { "name": "request", "type": "CallRequest" },
+        { "isOptional": true, "name": "number", "type": "BlockNumber" }
+      ],
+      "type": "Bytes"
+    },
+    "chainId": {
+      "description": "Returns the chain ID used for transaction signing at the current best block. None is returned if not available.",
+      "params": [],
+      "type": "U64"
+    },
+    "coinbase": {
+      "description": "Returns block author.",
+      "params": [],
+      "type": "H160"
+    },
+    "estimateGas": {
+      "description": "Estimate gas needed for execution of given contract.",
+      "params": [
+        { "name": "request", "type": "CallRequest" },
+        { "isOptional": true, "name": "number", "type": "BlockNumber" }
+      ],
+      "type": "U256"
+    },
+    "gasPrice": {
+      "description": "Returns current gas_price.",
+      "params": [],
+      "type": "U256"
+    },
+    "getBalance": {
+      "description": "Returns balance of the given account.",
+      "params": [
+        { "name": "address", "type": "H160" },
+        { "isOptional": true, "name": "number", "type": "BlockNumber" }
+      ],
+      "type": "U256"
+    },
+    "getBlockByHash": {
+      "description": "Returns block with given hash.",
+      "params": [
+        { "name": "hash", "type": "H256" },
+        { "isOptional": true, "name": "full", "type": "bool" }
+      ],
+      "type": "RichBlock"
+    },
+    "getBlockByNumber": {
+      "description": "Returns block with given number.",
+      "params": [
+        { "name": "block", "type": "BlockNumber" },
+        { "isOptional": true, "name": "full", "type": "bool" }
+      ],
+      "type": "RichBlock"
+    },
+    "getBlockTransactionCountByHash": {
+      "description": "Returns the number of transactions in a block with given hash.",
+      "params": [{ "name": "hash", "type": "H256" }],
+      "type": "U256"
+    },
+    "getBlockTransactionCountByNumber": {
+      "description": "Returns the number of transactions in a block with given block number.",
+      "params": [{ "name": "block", "type": "BlockNumber" }],
+      "type": "U256"
+    },
+    "getCode": {
+      "description": "Returns the code at given address at given time (block number).",
+      "params": [
+        { "name": "address", "type": "H160" },
+        { "isOptional": true, "name": "number", "type": "BlockNumber" }
+      ],
+      "type": "Bytes"
+    },
+    "getLogs": {
+      "description": "Returns logs matching given filter object.",
+      "params": [{ "name": "filter", "type": "Filter" }],
+      "type": "Vec<Log>"
+    },
+    "getStorageAt": {
+      "description": "Returns content of the storage at given address.",
+      "params": [
+        { "name": "address", "type": "H160" },
+        { "name": "index", "type": "U256" },
+        { "isOptional": true, "name": "number", "type": "BlockNumber" }
+      ],
+      "type": "H256"
+    },
+    "getTransactionByBlockHashAndIndex": {
+      "description": "Returns transaction at given block hash and index.",
+      "params": [
+        { "name": "hash", "type": "H256" },
+        { "name": "index", "type": "U256" }
+      ],
+      "type": "Transaction"
+    },
+    "getTransactionByBlockNumberAndIndex": {
+      "description": "Returns transaction by given block number and index.",
+      "params": [
+        { "isOptional": true, "name": "number", "type": "BlockNumber" },
+        { "name": "index", "type": "U256" }
+      ],
+      "type": "Transaction"
+    },
+    "getTransactionByHash": {
+      "description": "Get transaction by its hash.",
+      "params": [{ "name": "hash", "type": "H256" }],
+      "type": "Transaction"
+    },
+    "getTransactionCount": {
+      "description": "Returns the number of transactions sent from given address at given time (block number).",
+      "params": [
+        { "name": "hash", "type": "H256" },
+        { "isOptional": true, "name": "number", "type": "BlockNumber" }
+      ],
+      "type": "U256"
+    },
+    "getTransactionReceipt": {
+      "description": "Returns transaction receipt by transaction hash.",
+      "params": [{ "name": "hash", "type": "H256" }],
+      "type": "Receipt"
+    },
+    "getUncleByBlockHashAndIndex": {
+      "description": "Returns an uncles at given block and index.",
+      "params": [
+        { "name": "hash", "type": "H256" },
+        { "name": "index", "type": "U256" }
+      ],
+      "type": "RichBlock"
+    },
+    "getUncleByBlockNumberAndIndex": {
+      "description": "Returns an uncles at given block and index.",
+      "params": [
+        { "isOptional": true, "name": "number", "type": "BlockNumber" },
+        { "name": "index", "type": "U256" }
+      ],
+      "type": "RichBlock"
+    },
+    "getUncleCountByBlockHash": {
+      "description": "Returns the number of uncles in a block with given hash.",
+      "params": [{ "name": "hash", "type": "H256" }],
+      "type": "U256"
+    },
+    "getUncleCountByBlockNumber": {
+      "description": "Returns the number of uncles in a block with given block number.",
+      "params": [
+        { "isOptional": true, "name": "number", "type": "BlockNumber" }
+      ],
+      "type": "U256"
+    },
+    "getWork": {
+      "description": "Returns the hash of the current block, the seedHash, and the boundary condition to be met.",
+      "params": [],
+      "type": "Work"
+    },
+    "hashrate": {
+      "description": "Returns the number of hashes per second that the node is mining with.",
+      "params": [],
+      "type": "U256"
+    },
+    "mining": {
+      "description": "Returns true if client is actively mining new blocks.",
+      "params": [],
+      "type": "bool"
+    },
+    "protocolVersion": {
+      "description": "Returns protocol version encoded as a string (quotes are necessary).",
+      "params": [],
+      "type": "u64"
+    },
+    "sendRawTransaction": {
+      "description": "Sends signed transaction, returning its hash.",
+      "params": [{ "name": "bytes", "type": "Bytes" }],
+      "type": "BoxFuture<H256>"
+    },
+    "submitHashrate": {
+      "description": "Used for submitting mining hashrate.",
+      "params": [
+        { "name": "index", "type": "U256" },
+        { "name": "hash", "type": "H256" }
+      ],
+      "type": "bool"
+    },
+    "submitWork": {
+      "description": "Used for submitting a proof-of-work solution.",
+      "params": [
+        { "name": "_", "type": "H64" },
+        { "name": "_", "type": "H256" },
+        { "name": "_", "type": "H256" }
+      ],
+      "type": "bool"
+    },
+    "subscribe": {
+      "description": "Subscribe to Eth subscription.",
+      "params": [
+        { "name": "_metadata", "type": "Self::Metadata" },
+        { "name": "subscriber", "type": "Subscriber<PubSubResult>" },
+        { "name": "kind", "type": "Kind" },
+        { "isOptional": true, "name": "params", "type": "Params" }
+      ],
+      "type": ""
+    },
+    "syncing": {
+      "description": "Returns an object with data about the sync status or false. (wtf?)",
+      "params": [],
+      "type": "SyncStatus"
+    },
+    "unsubscribe": {
+      "description": "nsubscribe from existing Eth subscription.",
+      "params": [
+        { "name": "_metadata", "type": "Self::Metadata" },
+        { "name": "subscription_id", "type": "Self::SubscriptionId" }
+      ],
+      "type": ""
+    }
+  },
+  "net": {
+    "listening": {
+      "description": "Returns true if client is actively listening for network connections. Otherwise false.",
+      "params": [],
+      "type": "bool"
+    },
+    "peerCount": {
+      "description": "Returns number of peers connected to node.",
+      "params": [],
+      "type": "String"
+    },
+    "version": {
+      "description": "Returns protocol version.",
+      "params": [],
+      "type": "String"
+    }
+  }
+}
diff --git a/polkadot-js/standalone-types.json b/polkadot-js/standalone-types.json
index 40ba01d70a..ea2be4832f 100644
--- a/polkadot-js/standalone-types.json
+++ b/polkadot-js/standalone-types.json
@@ -8,18 +8,96 @@
     "nonce": "U256",
     "balance": "u128"
   },
+  "TransactionCondition": {
+    "_enum": {
+      "block": "u64",
+      "time": "u64"
+    }
+  },
   "Transaction": {
+    "block_hash": "Option<H256>",
+    "block_number": "Option<U256>",
+    "chain_id": "Option<u64>",
+    "condition": "Option<TransactionCondition>",
+    "creates": "Option<H160>",
+    "from": "H160",
+    "gas": "U256",
+    "gas_price": "U256",
+    "hash": "H256",
+    "input": "Bytes",
     "nonce": "U256",
-    "action": "String",
-    "gas_price": "u64",
-    "gas_limit": "u64",
-    "value": "U256",
-    "input": "Vec<u8>",
-    "signature": "Signature"
-  },
-  "Signature": {
-    "v": "u64",
-    "r": "H256",
-    "s": "H256"
+    "public_key": "Option<H512>",
+    "r": "U256",
+    "raw": "Bytes",
+    "s": "U256",
+    "standard_v": "U256",
+    "to": "Option<H160>",
+    "transaction_index": "Option<U256>",
+    "v": "U256",
+    "value": "U256"
+  },
+  "TransactionStatus": {
+    "transaction_hash": "H256",
+    "transaction_index": "u32",
+    "from": "H160",
+    "to": "Option<H160>",
+    "contract_address": "Option<H160>",
+    "logs": "Vec<Log>",
+    "logs_bloom": "Bloom"
+  },
+  "Receipt": {
+    "transaction_hash": "Option<H256>",
+    "transaction_index": "Option<U256>",
+    "block_hash": "Option<H256>",
+    "from": "Option<H160>",
+    "to": "Option<H160>",
+    "block_number": "Option<U256>",
+    "cumulative_gas_used": "U256",
+    "gas_used": "Option<U256>",
+    "contract_address": "Option<H160>",
+    "logs": "Vec<Log>",
+    "state_root": "Option<H256>",
+    "logs_bloom": "H2048",
+    "status_code": "Option<U64>"
+  },
+  "ExitReason": {
+    "_enum": {
+      "Succeed": "ExitSucceed",
+      "Error": "ExitError",
+      "Revert": "ExitRevert",
+      "verFatal": "ExitFatal"
+    }
+  },
+  "ExitSucceed": {
+    "_enum": ["Stopped", "Returned", "Suicided"]
+  },
+  "ExitError": {
+    "_enum": [
+      "StackUnderflow",
+      "StackOverflow",
+      "InvalidJump",
+      "InvalidRange",
+      "DesignatedInvalid",
+      "CallTooDeep",
+      "CreateCollision",
+      "CreateContractLimit",
+      "OutOfOffset",
+      "OutOfGas",
+      "OutOfFund",
+      "PCUnderflow",
+      "CreateEmpty",
+      "Other(Cow<'static, str>)"
+    ]
+  },
+  "ExitRevert": {
+    "_enum": ["Reverted"]
+  },
+  "ExitFatal": {
+    "_enum": [
+      "NotSupported",
+      "UnhandledInterrupt",
+      "CallErrorAsFatal(ExitError)",
+      "Other(Cow<'static, str>)"
+    ]
   }
 }
diff --git a/tools/generate-rpc-types.ts b/tools/generate-rpc-types.ts
new file mode 100644
index 0000000000..7677f824bf
--- /dev/null
+++ b/tools/generate-rpc-types.ts
@@ -0,0 +1,212 @@
+// Copyright 2017-2020 @polkadot/apps-config authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+//import { DefinitionRpc, DefinitionRpcParam } from "@polkadot/types/types";
+export declare type DefinitionTypeType = string;
+export declare type DefinitionTypeEnum =
+  | {
+      _enum: DefinitionTypeType[];
+    }
+  | {
+      _enum: Record<string, DefinitionTypeType | null>;
+    };
+export declare type DefinitionTypeSet = {
+  _set: Record<string, number>;
+};
+export declare type DefinitionTypeStruct =
+  | Record<string, DefinitionTypeType>
+  | ({
+      _alias?: Record<string, DefinitionTypeType>;
+    } & Record<string, unknown>);
+export declare type DefinitionType =
+  | string
+  | DefinitionTypeEnum
+  | DefinitionTypeSet
+  | DefinitionTypeStruct;
+interface DefinitionRpcParam {
+  isCached?: boolean;
+  isHistoric?: boolean;
+  isOptional?: boolean;
+  name: string;
+  type: DefinitionTypeType;
+}
+interface DefinitionRpc {
+  alias?: string[];
+  description: string;
+  endpoint?: string;
+  params: DefinitionRpcParam[];
+  type: DefinitionTypeType;
+}
+
+export default function rpcTypes(): Record<string, Record<string, DefinitionRpc>> {
+  function generateDescription(
+    description: string,
+    returnType: string,
+    params: DefinitionRpcParam[] = []
+  ): DefinitionRpc {
+    return {
+      description,
+      params,
+      type: returnType,
+    };
+  }
+
+  const numberParam: DefinitionRpcParam = { isOptional: true, name: "number", type: "BlockNumber" };
+  const hashParam: DefinitionRpcParam = { name: "hash", type: "H256" };
+  const reqParam: DefinitionRpcParam = { name: "request", type: "CallRequest" };
+  const blockParam: DefinitionRpcParam = { name: "block", type: "BlockNumber" };
+  const addressParam: DefinitionRpcParam = { name: "address", type: "H160" };
+  const indexParam: DefinitionRpcParam = { name: "index", type: "U256" };
+
+  return {
+    eth: {
+      accounts: generateDescription("Returns accounts list.", "Vec<H160>"),
+      blockNumber: generateDescription("Returns balance of the given account.", "U256"),
+      call: generateDescription("Call contract, returning the output data.", "Bytes", [
+        reqParam,
+        numberParam,
+      ]),
+      chainId: generateDescription(
+        "Returns the chain ID used for transaction signing at " +
+          "the current best block. None is returned if not available.",
+        "U64"
+      ),
+      coinbase: generateDescription("Returns block author.", "H160"),
+      estimateGas: generateDescription(
+        "Estimate gas needed for execution of given contract.",
+        "U256",
+        [reqParam, numberParam]
+      ),
+      gasPrice: generateDescription("Returns current gas_price.", "U256"),
+      getBalance: generateDescription("Returns balance of the given account.", "U256", [
+        addressParam,
+        numberParam,
+      ]),
+      getBlockByHash: generateDescription("Returns block with given hash.", "RichBlock", [
+        hashParam,
+        { isOptional: true, name: "full", type: "bool" },
+      ]),
+      getBlockByNumber: generateDescription("Returns block with given number.", "RichBlock", [
+        blockParam,
+        { isOptional: true, name: "full", type: "bool" },
+      ]),
+      getBlockTransactionCountByHash: generateDescription(
+        "Returns the number of transactions in a block with given hash.",
+        "U256",
+        [hashParam]
+      ),
+      getBlockTransactionCountByNumber: generateDescription(
+        "Returns the number of transactions in a block with given block number.",
+        "U256",
+        [blockParam]
+      ),
+      getCode: generateDescription(
+        "Returns the code at given address at given time (block number).",
+        "Bytes",
+        [addressParam, numberParam]
+      ),
+      getLogs: generateDescription("Returns logs matching given filter object.", "Vec<Log>", [
+        { name: "filter", type: "Filter" },
+      ]),
+      getStorageAt: generateDescription(
+        "Returns content of the storage at given address.",
+        "H256",
+        [addressParam, indexParam, numberParam]
+      ),
+      getTransactionByBlockHashAndIndex: generateDescription(
+        "Returns transaction at given block hash and index.",
+        "Transaction",
+        [hashParam, indexParam]
+      ),
+      getTransactionByBlockNumberAndIndex: generateDescription(
+        "Returns transaction by given block number and index.",
+        "Transaction",
+        [numberParam, indexParam]
+      ),
+      getTransactionByHash: generateDescription("Get transaction by its hash.", "Transaction", [
+        hashParam,
+      ]),
+      getTransactionCount: generateDescription(
+        "Returns the number of transactions sent from given address at given time (block number).",
+        "U256",
+        [hashParam, numberParam]
+      ),
+      getTransactionReceipt: generateDescription(
+        "Returns transaction receipt by transaction hash.",
+        "Receipt",
+        [hashParam]
+      ),
+      getUncleByBlockHashAndIndex: generateDescription(
+        "Returns an uncles at given block and index.",
+        "RichBlock",
+        [hashParam, indexParam]
+      ),
+      getUncleByBlockNumberAndIndex: generateDescription(
+        "Returns an uncles at given block and index.",
+        "RichBlock",
+        [numberParam, indexParam]
+      ),
+      getUncleCountByBlockHash: generateDescription(
+        "Returns the number of uncles in a block with given hash.",
+        "U256",
+        [hashParam]
+      ),
+      getUncleCountByBlockNumber: generateDescription(
+        "Returns the number of uncles in a block with given block number.",
+        "U256",
+        [numberParam]
+      ),
+      getWork: generateDescription(
+        "Returns the hash of the current block, the seedHash," +
+          " and the boundary condition to be met.",
+        "Work"
+      ),
+      hashrate: generateDescription(
+        "Returns the number of hashes per second that the node is mining with.",
+        "U256"
+      ),
+      mining: generateDescription("Returns true if client is actively mining new blocks.", "bool"),
+      protocolVersion: generateDescription(
+        "Returns protocol version encoded as a string (quotes are necessary).",
+        "u64"
+      ),
+      sendRawTransaction: generateDescription(
+        "Sends signed transaction, returning its hash.",
+        "BoxFuture<H256>",
+        [{ name: "bytes", type: "Bytes" }]
+      ),
+      submitHashrate: generateDescription("Used for submitting mining hashrate.", "bool", [
+        indexParam,
+        hashParam,
+      ]),
+      submitWork: generateDescription("Used for submitting a proof-of-work solution.", "bool", [
+        { name: "_", type: "H64" },
+        { name: "_", type: "H256" },
+        { name: "_", type: "H256" },
+      ]),
+      subscribe: generateDescription("Subscribe to Eth subscription.", "", [
+        { name: "_metadata", type: "Self::Metadata" },
+        { name: "subscriber", type: "Subscriber<PubSubResult>" },
+        { name: "kind", type: "Kind" },
+        { isOptional: true, name: "params", type: "Params" },
+      ]),
+      syncing: generateDescription(
+        "Returns an object with data about the sync status or false. (wtf?)",
+        "SyncStatus"
+      ),
+      unsubscribe: generateDescription("nsubscribe from existing Eth subscription.", "", [
+        { name: "_metadata", type: "Self::Metadata" },
+        { name: "subscription_id", type: "Self::SubscriptionId" },
+      ]),
+    },
+    net: {
+      listening: generateDescription(
+        "Returns true if client is actively listening for network connections. Otherwise false.",
+        "bool"
+      ),
+      peerCount: generateDescription("Returns number of peers connected to node.", "String"),
+      version: generateDescription("Returns protocol version.", "String"),
+    },
+  };
+}
+console.log(JSON.stringify(rpcTypes()));