Parameters

class_hash

string

REQUIRED

The hash of the contract class whose CASM will be returned

Returns

result

object

The compiled contract class with the following fields:

bytecode

array

The CASM bytecode of the compiled class

compiler_version

string

The version of the Cairo compiler used to compile the class

entry_points_by_type

object

The entry points of the compiled class, grouped into the CONSTRUCTOR, EXTERNAL and L1_HANDLER keys. Each entry point has the following fields

selector

string

A unique identifier of the entry point (function) in the program

offset

integer

The offset of the instruction in the class's bytecode

builtins

array

The list of builtins used by the entry point, for example 'range_check' or 'pedersen'

hints

array

The hints of the compiled class, given as [bytecode index, list of hints] pairs. Each hint is an object keyed by its type, for example 'TestLessThanOrEqual' or 'AllocSegment', whose value holds the hint's operands

prime

string

The prime field of the Cairo VM

bytecode_segment_lengths

array

(Optional) A list of sizes of segments in the bytecode, each segment is hashed individually when computing the bytecode hash. Only returned for classes compiled with Sierra 1.5.0 or above

Request

1
# Note: You can specify Starknet version in the URL path
2
# Example: /rpc/v0_9 for version 0.9. Versions 0.6, 0.7, and 0.8 are no longer supported
3
curl --location 'https://docs-demo.strk-mainnet.quiknode.pro/rpc/v0_9' \
4
--header 'accept: application/json' \
5
--header 'content-type: application/json' \
6
--data '{
7
    "id": 1,
8
    "jsonrpc": "2.0",
9
    "method": "starknet_getCompiledCasm",
10
    "params": [
11
        "0x1a736d6ed154502257f02b1ccdf4d9d1089f80811cd6acad48e6b6a9d1f2003"
12
    ]
13
}'

1
# Note: You can specify Starknet version in the URL path
2
# Example: /rpc/v0_9 for version 0.9. Versions 0.6, 0.7, and 0.8 are no longer supported
3
curl --location 'https://docs-demo.strk-mainnet.quiknode.pro/rpc/v0_9' \
4
--header 'accept: application/json' \
5
--header 'content-type: application/json' \
6
--data '{
7
    "id": 1,
8
    "jsonrpc": "2.0",
9
    "method": "starknet_getCompiledCasm",
10
    "params": [
11
        "0x1a736d6ed154502257f02b1ccdf4d9d1089f80811cd6acad48e6b6a9d1f2003"
12
    ]
13
}'

1
// Note: You can specify Starknet version in the URL path
2
// Example: /rpc/v0_9 for version 0.9. Versions 0.6, 0.7, and 0.8 are no longer supported
3
const myHeaders = new Headers();
4
myHeaders.append("accept", "application/json");
5
myHeaders.append("content-type", "application/json");
6

7
const raw = JSON.stringify({
8
  "id": 1,
9
  "jsonrpc": "2.0",
10
  "method": "starknet_getCompiledCasm",
11
  "params": [
12
    "0x1a736d6ed154502257f02b1ccdf4d9d1089f80811cd6acad48e6b6a9d1f2003"
13
  ]
14
});
15

16
const requestOptions = {
17
  method: "POST",
18
  headers: myHeaders,
19
  body: raw,
20
  redirect: "follow"
21
};
22

23
fetch("https://docs-demo.strk-mainnet.quiknode.pro/rpc/v0_9", requestOptions)
24
  .then((response) => response.text())
25
  .then((result) => console.log(result))
26
  .catch((error) => console.error(error));

1
// Note: You can specify Starknet version in the URL path
2
// Example: /rpc/v0_9 for version 0.9. Versions 0.6, 0.7, and 0.8 are no longer supported
3
const myHeaders = new Headers();
4
myHeaders.append("accept", "application/json");
5
myHeaders.append("content-type", "application/json");
6

7
const raw = JSON.stringify({
8
  "id": 1,
9
  "jsonrpc": "2.0",
10
  "method": "starknet_getCompiledCasm",
11
  "params": [
12
    "0x1a736d6ed154502257f02b1ccdf4d9d1089f80811cd6acad48e6b6a9d1f2003"
13
  ]
14
});
15

16
const requestOptions = {
17
  method: "POST",
18
  headers: myHeaders,
19
  body: raw,
20
  redirect: "follow"
21
};
22

23
fetch("https://docs-demo.strk-mainnet.quiknode.pro/rpc/v0_9", requestOptions)
24
  .then((response) => response.text())
25
  .then((result) => console.log(result))
26
  .catch((error) => console.error(error));

1
# Note: You can specify Starknet version in the URL path
2
# Example: /rpc/v0_9 for version 0.9. Versions 0.6, 0.7, and 0.8 are no longer supported
3
import requests
4
import json
5

6
url = "https://docs-demo.strk-mainnet.quiknode.pro/rpc/v0_9"
7

8
payload = json.dumps({
9
  "id": 1,
10
  "jsonrpc": "2.0",
11
  "method": "starknet_getCompiledCasm",
12
  "params": [
13
    "0x1a736d6ed154502257f02b1ccdf4d9d1089f80811cd6acad48e6b6a9d1f2003"
14
  ]
15
})
16
headers = {
17
  'accept': 'application/json',
18
  'content-type': 'application/json'
19
}
20

21
response = requests.request("POST", url, headers=headers, data=payload)
22

23
print(response.text)
24

1
# Note: You can specify Starknet version in the URL path
2
# Example: /rpc/v0_9 for version 0.9. Versions 0.6, 0.7, and 0.8 are no longer supported
3
import requests
4
import json
5

6
url = "https://docs-demo.strk-mainnet.quiknode.pro/rpc/v0_9"
7

8
payload = json.dumps({
9
  "id": 1,
10
  "jsonrpc": "2.0",
11
  "method": "starknet_getCompiledCasm",
12
  "params": [
13
    "0x1a736d6ed154502257f02b1ccdf4d9d1089f80811cd6acad48e6b6a9d1f2003"
14
  ]
15
})
16
headers = {
17
  'accept': 'application/json',
18
  'content-type': 'application/json'
19
}
20

21
response = requests.request("POST", url, headers=headers, data=payload)
22

23
print(response.text)
24

1
# Note: You can specify Starknet version in the URL path
2
# Example: /rpc/v0_9 for version 0.9. Versions 0.6, 0.7, and 0.8 are no longer supported
3
require "uri"
4
require "json"
5
require "net/http"
6

7
url = URI("https://docs-demo.strk-mainnet.quiknode.pro/rpc/v0_9")
8

9
http = Net::HTTP.new(url.host, url.port);
10
request = Net::HTTP::Post.new(url)
11
request["accept"] = "application/json"
12
request["content-type"] = "application/json"
13
request.body = JSON.dump({
14
  "id": 1,
15
  "jsonrpc": "2.0",
16
  "method": "starknet_getCompiledCasm",
17
  "params": [
18
    "0x1a736d6ed154502257f02b1ccdf4d9d1089f80811cd6acad48e6b6a9d1f2003"
19
  ]
20
})
21

22
response = http.request(request)
23
puts response.read_body
24

1
# Note: You can specify Starknet version in the URL path
2
# Example: /rpc/v0_9 for version 0.9. Versions 0.6, 0.7, and 0.8 are no longer supported
3
require "uri"
4
require "json"
5
require "net/http"
6

7
url = URI("https://docs-demo.strk-mainnet.quiknode.pro/rpc/v0_9")
8

9
http = Net::HTTP.new(url.host, url.port);
10
request = Net::HTTP::Post.new(url)
11
request["accept"] = "application/json"
12
request["content-type"] = "application/json"
13
request.body = JSON.dump({
14
  "id": 1,
15
  "jsonrpc": "2.0",
16
  "method": "starknet_getCompiledCasm",
17
  "params": [
18
    "0x1a736d6ed154502257f02b1ccdf4d9d1089f80811cd6acad48e6b6a9d1f2003"
19
  ]
20
})
21

22
response = http.request(request)
23
puts response.read_body
24

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