diff --git a/src/eth/filter.yaml b/src/eth/filter.yaml
index 0138a4ee..95b9b9b4 100644
--- a/src/eth/filter.yaml
+++ b/src/eth/filter.yaml
@@ -27,7 +27,7 @@
   params:
     - name: Filter Identifier
       schema:
-        $ref: '#/components/schemas/uint'
+        $ref: '#/components/schemas/uintParam'
   result:
     name: Success
     schema:
@@ -37,7 +37,7 @@
   params:
     - name: Filter Identifier
       schema:
-        $ref: '#/components/schemas/uint'
+        $ref: '#/components/schemas/uintParam'
   result:
     name: Log objects
     schema:
@@ -47,7 +47,7 @@
   params:
     - name: Filter Identifier
       schema:
-        $ref: '#/components/schemas/uint'
+        $ref: '#/components/schemas/uintParam'
   result:
     name: Log objects
     schema:
diff --git a/src/eth/transaction.yaml b/src/eth/transaction.yaml
index 3beee725..3fa9e3ce 100644
--- a/src/eth/transaction.yaml
+++ b/src/eth/transaction.yaml
@@ -21,7 +21,7 @@
     - name: Transaction index
       required: true
       schema:
-        $ref: '#/components/schemas/uint'
+        $ref: '#/components/schemas/uintParam'
   result:
     name: Transaction information
     schema:
@@ -38,7 +38,7 @@
     - name: Transaction index
       required: true
       schema:
-        $ref: '#/components/schemas/uint'
+        $ref: '#/components/schemas/uintParam'
   result:
     name: Transaction information
     schema:
diff --git a/src/schemas/base-types.yaml b/src/schemas/base-types.yaml
index f301e2bf..193d57ee 100644
--- a/src/schemas/base-types.yaml
+++ b/src/schemas/base-types.yaml
@@ -48,6 +48,14 @@ uint:
   title: hex encoded unsigned integer
   type: string
   pattern: ^0x([1-9a-f]+[0-9a-f]*|0)$
+uintParam:
+  title: unsigned integer number or hex string
+  description: clients accept both integer kinds in request parameters
+  oneOf:
+    - title: hex encoded unsigned integer
+      $ref: '#/components/schemas/uint'
+    - title: decimal unsigned integer
+      type: number
 uint64:
   title: hex encoded 64 bit unsigned integer
   type: string
diff --git a/src/schemas/block.yaml b/src/schemas/block.yaml
index c0d2bd89..b3474b73 100644
--- a/src/schemas/block.yaml
+++ b/src/schemas/block.yaml
@@ -116,14 +116,14 @@ BlockNumberOrTag:
   title: Block number or tag
   oneOf:
     - title: Block number
-      $ref: '#/components/schemas/uint'
+      $ref: '#/components/schemas/uintParam'
     - title: Block tag
       $ref: '#/components/schemas/BlockTag'
 BlockNumberOrTagOrHash:
   title: Block number, tag, or block hash
   anyOf:
     - title: Block number
-      $ref: '#/components/schemas/uint'
+      $ref: '#/components/schemas/uintParam'
     - title: Block tag
       $ref: '#/components/schemas/BlockTag'
     - title: Block hash
diff --git a/src/schemas/filter.yaml b/src/schemas/filter.yaml
index 2d454204..433c50d1 100644
--- a/src/schemas/filter.yaml
+++ b/src/schemas/filter.yaml
@@ -20,10 +20,10 @@ Filter:
   properties:
     fromBlock:
       title: from block
-      $ref: '#/components/schemas/uint'
+      $ref: '#/components/schemas/uintParam'
     toBlock:
       title: to block
-      $ref: '#/components/schemas/uint'
+      $ref: '#/components/schemas/uintParam'
     address:
       title: Address(es)
       oneOf:
diff --git a/tests/eth_getBlockByNumber/get-block-n.io b/tests/eth_getBlockByNumber/get-block-n-hex.io
similarity index 100%
rename from tests/eth_getBlockByNumber/get-block-n.io
rename to tests/eth_getBlockByNumber/get-block-n-hex.io
diff --git a/tests/eth_getBlockByNumber/get-block-n-number.io b/tests/eth_getBlockByNumber/get-block-n-number.io
new file mode 100644
index 00000000..459b9df4
--- /dev/null
+++ b/tests/eth_getBlockByNumber/get-block-n-number.io
@@ -0,0 +1,2 @@
+>> {"jsonrpc":"2.0","id":1,"method":"eth_getBlockByNumber","params":[2,true]}
+<< {"jsonrpc":"2.0","id":1,"result":{"baseFeePerGas":"0x2db08786","difficulty":"0x0","extraData":"0x","gasLimit":"0x4c4b40","gasUsed":"0x5208","hash":"0xb019ea73504c933a601125fc37ebfd9629a2119a91792a5653365ed73ec56acb","logsBloom":"0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000","miner":"0x0000000000000000000000000000000000000000","mixHash":"0x0000000000000000000000000000000000000000000000000000000000000000","nonce":"0x0000000000000000","number":"0x2","parentHash":"0x7cb4dd3daba1f739d0c1ec7d998b4a2f6fd83019116455afa54ca4f49dfa0ad4","receiptsRoot":"0x056b23fbba480696b65fe5a59b8f2148a1299103c4f57df839233af2cf4ca2d2","sha3Uncles":"0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347","size":"0x2bf","stateRoot":"0xf87c613573a54e020b1bf5d540b6ed339fe982a90dc01da3f45f9714367ea9a3","timestamp":"0x14","totalDifficulty":"0x1","transactions":[{"blockHash":"0xb019ea73504c933a601125fc37ebfd9629a2119a91792a5653365ed73ec56acb","blockNumber":"0x2","from":"0x658bdf435d810c91414ec09147daa6db62406379","gas":"0x5208","gasPrice":"0x2db08787","hash":"0x0d9ba049a158972e7fc1066122ceb31e431483ebf84f90f845f02e326942d467","input":"0x","nonce":"0x1","to":"0x658bdf435d810c91414ec09147daa6db62406379","transactionIndex":"0x0","value":"0x3e8","type":"0x0","chainId":"0x539","v":"0xa95","r":"0x52a6f622013359249316f4c017a67bc2c659f513dac5efea43a84b6ce4e462b1","s":"0x55ba2a779eaf62efa7d641a32ea329faabf9f097d376e2e400115a5151b9470"}],"transactionsRoot":"0x14488a14ae59174bedee90344854fb9b6a308143ce4bf688c00f2e81a9aae2a3","uncles":[],"withdrawals":[{"index":"0x0","validatorIndex":"0x2a","address":"0xee00000000000000000000000000000000000000","amount":"0x539"},{"index":"0x1","validatorIndex":"0xd","address":"0xee00000000000000000000000000000000000000","amount":"0x1"}],"withdrawalsRoot":"0x625ee608ff633ca6371503f9a8159a9e158f3fa9585650418562ef7bd1d1dfc9"}}