Parameters

Script

string

REQUIRED

The Base64 encoded content of the Cadence script

Arguments

string

REQUIRED

A list of arguments each encoded as Base64 passed in the JSON-Cadence interchange format

Returns

value

string

The result of the executed Cadence script

Request

1
package main
2

3
import (
4
	"context"
5
	"encoding/json"
6
	"fmt"
7
	"log"
8
	"strconv"
9

10
	"github.com/onflow/flow/protobuf/go/flow/access"
11
)
12

13

14
func main() {
15

16
	// Requires authenticating before making the request. Refer to Intro Page on how Authentication can be done.
17
	client, err := getAccessClientWithBasicAuth("ENDPOINT-NAME", "TOKEN_GOES_HERE")
18
	ctx := context.Background()
19
	if err != nil {
20
		log.Fatalf("err: %v", err)
21
	}
22

23
	// Execute Script at Latest Block
24
	script := []byte(`
25
		pub fun main(a: Int): Int {
26
			return a + 10
27
		}
28
	`)
29

30
	// Convert integer to JSON-CDC (Cadence JSON)
31
	arg := 10
32
	// JSON-CDC representation of an integer is a JSON object with "type" and "value" fields
33
	jsonCDC := fmt.Sprintf(`{"type":"Int","value":"%s"}`, strconv.Itoa(arg))
34

35
	// Create script arguments
36
	args := [][]byte{[]byte(jsonCDC)}
37

38
	req := &access.ExecuteScriptAtLatestBlockRequest{
39
		Script:    script,
40
		Arguments: args,
41
	}
42

43
	valueResp, err := client.ExecuteScriptAtLatestBlock(ctx, req)
44
	respJSON, err := json.Marshal(valueResp)
45
	if err != nil {
46
		log.Fatal("err: ", err)
47
	}
48
	fmt.Println("ExecuteScriptAtLatestBlock response:", string(respJSON))
49

50
}

1
package main
2

3
import (
4
	"context"
5
	"encoding/json"
6
	"fmt"
7
	"log"
8
	"strconv"
9

10
	"github.com/onflow/flow/protobuf/go/flow/access"
11
)
12

13

14
func main() {
15

16
	// Requires authenticating before making the request. Refer to Intro Page on how Authentication can be done.
17
	client, err := getAccessClientWithBasicAuth("ENDPOINT-NAME", "TOKEN_GOES_HERE")
18
	ctx := context.Background()
19
	if err != nil {
20
		log.Fatalf("err: %v", err)
21
	}
22

23
	// Execute Script at Latest Block
24
	script := []byte(`
25
		pub fun main(a: Int): Int {
26
			return a + 10
27
		}
28
	`)
29

30
	// Convert integer to JSON-CDC (Cadence JSON)
31
	arg := 10
32
	// JSON-CDC representation of an integer is a JSON object with "type" and "value" fields
33
	jsonCDC := fmt.Sprintf(`{"type":"Int","value":"%s"}`, strconv.Itoa(arg))
34

35
	// Create script arguments
36
	args := [][]byte{[]byte(jsonCDC)}
37

38
	req := &access.ExecuteScriptAtLatestBlockRequest{
39
		Script:    script,
40
		Arguments: args,
41
	}
42

43
	valueResp, err := client.ExecuteScriptAtLatestBlock(ctx, req)
44
	respJSON, err := json.Marshal(valueResp)
45
	if err != nil {
46
		log.Fatal("err: ", err)
47
	}
48
	fmt.Println("ExecuteScriptAtLatestBlock response:", string(respJSON))
49

50
}

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