Protocol parameters
curl --request GET \
--url https://mainnet.gomaestro-api.org/v1/protocol-parameters \
--header 'api-key: <api-key>'import requests
url = "https://mainnet.gomaestro-api.org/v1/protocol-parameters"
headers = {"api-key": "<api-key>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {'api-key': '<api-key>'}};
fetch('https://mainnet.gomaestro-api.org/v1/protocol-parameters', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://mainnet.gomaestro-api.org/v1/protocol-parameters",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"api-key: <api-key>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://mainnet.gomaestro-api.org/v1/protocol-parameters"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("api-key", "<api-key>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://mainnet.gomaestro-api.org/v1/protocol-parameters")
.header("api-key", "<api-key>")
.asString();require 'uri'
require 'net/http'
url = URI("https://mainnet.gomaestro-api.org/v1/protocol-parameters")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["api-key"] = '<api-key>'
response = http.request(request)
puts response.read_body{
"data": {
"min_fee_coefficient": 44,
"min_fee_constant": {
"ada": {
"lovelace": 155381
}
},
"min_fee_reference_scripts": {
"base": 15,
"range": 25600,
"multiplier": 1.2
},
"max_block_body_size": {
"bytes": 90112
},
"max_block_header_size": {
"bytes": 1100
},
"max_transaction_size": {
"bytes": 16384
},
"max_reference_scripts_size": {
"bytes": 204800
},
"stake_credential_deposit": {
"ada": {
"lovelace": 2000000
}
},
"stake_pool_deposit": {
"ada": {
"lovelace": 500000000
}
},
"stake_pool_retirement_epoch_bound": 18,
"desired_number_of_stake_pools": 500,
"stake_pool_pledge_influence": "3/10",
"monetary_expansion": "3/1000",
"treasury_expansion": "1/5",
"min_stake_pool_cost": {
"ada": {
"lovelace": 170000000
}
},
"min_utxo_deposit_constant": {
"ada": {
"lovelace": 0
}
},
"min_utxo_deposit_coefficient": 4310,
"plutus_cost_models": {
"plutus_v1": [
100788,
420,
1,
1,
1000,
173,
0,
1,
1000,
59957,
4,
1,
11183,
32,
201305,
8356,
4,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
100,
100,
16000,
100,
94375,
32,
132994,
32,
61462,
4,
72010,
178,
0,
1,
22151,
32,
91189,
769,
4,
2,
85848,
228465,
122,
0,
1,
1,
1000,
42921,
4,
2,
24548,
29498,
38,
1,
898148,
27279,
1,
51775,
558,
1,
39184,
1000,
60594,
1,
141895,
32,
83150,
32,
15299,
32,
76049,
1,
13169,
4,
22100,
10,
28999,
74,
1,
28999,
74,
1,
43285,
552,
1,
44749,
541,
1,
33852,
32,
68246,
32,
72362,
32,
7243,
32,
7391,
32,
11546,
32,
85848,
228465,
122,
0,
1,
1,
90434,
519,
0,
1,
74433,
32,
85848,
228465,
122,
0,
1,
1,
85848,
228465,
122,
0,
1,
1,
270652,
22588,
4,
1457325,
64566,
4,
20467,
1,
4,
0,
141992,
32,
100788,
420,
1,
1,
81663,
32,
59498,
32,
20142,
32,
24588,
32,
20744,
32,
25933,
32,
24623,
32,
53384111,
14333,
10
],
"plutus_v2": [
100788,
420,
1,
1,
1000,
173,
0,
1,
1000,
59957,
4,
1,
11183,
32,
201305,
8356,
4,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
100,
100,
16000,
100,
94375,
32,
132994,
32,
61462,
4,
72010,
178,
0,
1,
22151,
32,
91189,
769,
4,
2,
85848,
228465,
122,
0,
1,
1,
1000,
42921,
4,
2,
24548,
29498,
38,
1,
898148,
27279,
1,
51775,
558,
1,
39184,
1000,
60594,
1,
141895,
32,
83150,
32,
15299,
32,
76049,
1,
13169,
4,
22100,
10,
28999,
74,
1,
28999,
74,
1,
43285,
552,
1,
44749,
541,
1,
33852,
32,
68246,
32,
72362,
32,
7243,
32,
7391,
32,
11546,
32,
85848,
228465,
122,
0,
1,
1,
90434,
519,
0,
1,
74433,
32,
85848,
228465,
122,
0,
1,
1,
85848,
228465,
122,
0,
1,
1,
955506,
213312,
0,
2,
270652,
22588,
4,
1457325,
64566,
4,
20467,
1,
4,
0,
141992,
32,
100788,
420,
1,
1,
81663,
32,
59498,
32,
20142,
32,
24588,
32,
20744,
32,
25933,
32,
24623,
32,
43053543,
10,
53384111,
14333,
10,
43574283,
26308,
10
],
"plutus_v3": [
100788,
420,
1,
1,
1000,
173,
0,
1,
1000,
59957,
4,
1,
11183,
32,
201305,
8356,
4,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
100,
100,
16000,
100,
94375,
32,
132994,
32,
61462,
4,
72010,
178,
0,
1,
22151,
32,
91189,
769,
4,
2,
85848,
123203,
7305,
-900,
1716,
549,
57,
85848,
0,
1,
1,
1000,
42921,
4,
2,
24548,
29498,
38,
1,
898148,
27279,
1,
51775,
558,
1,
39184,
1000,
60594,
1,
141895,
32,
83150,
32,
15299,
32,
76049,
1,
13169,
4,
22100,
10,
28999,
74,
1,
28999,
74,
1,
43285,
552,
1,
44749,
541,
1,
33852,
32,
68246,
32,
72362,
32,
7243,
32,
7391,
32,
11546,
32,
85848,
123203,
7305,
-900,
1716,
549,
57,
85848,
0,
1,
90434,
519,
0,
1,
74433,
32,
85848,
123203,
7305,
-900,
1716,
549,
57,
85848,
0,
1,
1,
85848,
123203,
7305,
-900,
1716,
549,
57,
85848,
0,
1,
955506,
213312,
0,
2,
270652,
22588,
4,
1457325,
64566,
4,
20467,
1,
4,
0,
141992,
32,
100788,
420,
1,
1,
81663,
32,
59498,
32,
20142,
32,
24588,
32,
20744,
32,
25933,
32,
24623,
32,
43053543,
10,
53384111,
14333,
10,
43574283,
26308,
10,
16000,
100,
16000,
100,
962335,
18,
2780678,
6,
442008,
1,
52538055,
3756,
18,
267929,
18,
76433006,
8868,
18,
52948122,
18,
1995836,
36,
3227919,
12,
901022,
1,
166917843,
4307,
36,
284546,
36,
158221314,
26549,
36,
74698472,
36,
333849714,
1,
254006273,
72,
2174038,
72,
2261318,
64571,
4,
207616,
8310,
4,
1293828,
28716,
63,
0,
1,
1006041,
43623,
251,
0,
1
]
},
"script_execution_prices": {
"memory": "577/10000",
"cpu": "721/10000000"
},
"max_execution_units_per_transaction": {
"memory": 14000000,
"cpu": 10000000000
},
"max_execution_units_per_block": {
"memory": 62000000,
"cpu": 20000000000
},
"max_value_size": {
"bytes": 5000
},
"collateral_percentage": 150,
"max_collateral_inputs": 3,
"version": {
"major": 9,
"minor": 0
},
"stake_pool_voting_thresholds": {
"no_confidence": "51/100",
"constitutional_committee": {
"default": "51/100",
"state_of_no_confidence": "51/100"
},
"hard_fork_initiation": "51/100",
"protocol_parameters_update": {
"security": "51/100"
}
},
"delegate_representative_voting_thresholds": {
"no_confidence": "67/100",
"constitutional_committee": {
"default": "67/100",
"state_of_no_confidence": "3/5"
},
"constitution": "3/4",
"hard_fork_initiation": "3/5",
"protocol_parameters_update": {
"network": "67/100",
"economic": "67/100",
"technical": "67/100",
"governance": "3/4"
},
"treasury_withdrawals": "67/100"
},
"constitutional_committee_min_size": 7,
"constitutional_committee_max_term_length": 146,
"governance_action_lifetime": 6,
"governance_action_deposit": {
"ada": {
"lovelace": 100000000000
}
},
"delegate_representative_deposit": {
"ada": {
"lovelace": 500000000
}
},
"delegate_representative_max_idle_time": 20
},
"last_updated": {
"timestamp": "2024-08-29 16:03:26",
"block_hash": "ebe27467ad34f4ecb80a3a537aae2e084e34d751426d484f87a5a6a9db4c216f",
"block_slot": 69264206
}
}General
Protocol parameters
Get current Cardano blockchain protocol parameters including fees, limits, and governance settings.
GET
/
protocol-parameters
Protocol parameters
curl --request GET \
--url https://mainnet.gomaestro-api.org/v1/protocol-parameters \
--header 'api-key: <api-key>'import requests
url = "https://mainnet.gomaestro-api.org/v1/protocol-parameters"
headers = {"api-key": "<api-key>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {'api-key': '<api-key>'}};
fetch('https://mainnet.gomaestro-api.org/v1/protocol-parameters', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://mainnet.gomaestro-api.org/v1/protocol-parameters",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"api-key: <api-key>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://mainnet.gomaestro-api.org/v1/protocol-parameters"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("api-key", "<api-key>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://mainnet.gomaestro-api.org/v1/protocol-parameters")
.header("api-key", "<api-key>")
.asString();require 'uri'
require 'net/http'
url = URI("https://mainnet.gomaestro-api.org/v1/protocol-parameters")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["api-key"] = '<api-key>'
response = http.request(request)
puts response.read_body{
"data": {
"min_fee_coefficient": 44,
"min_fee_constant": {
"ada": {
"lovelace": 155381
}
},
"min_fee_reference_scripts": {
"base": 15,
"range": 25600,
"multiplier": 1.2
},
"max_block_body_size": {
"bytes": 90112
},
"max_block_header_size": {
"bytes": 1100
},
"max_transaction_size": {
"bytes": 16384
},
"max_reference_scripts_size": {
"bytes": 204800
},
"stake_credential_deposit": {
"ada": {
"lovelace": 2000000
}
},
"stake_pool_deposit": {
"ada": {
"lovelace": 500000000
}
},
"stake_pool_retirement_epoch_bound": 18,
"desired_number_of_stake_pools": 500,
"stake_pool_pledge_influence": "3/10",
"monetary_expansion": "3/1000",
"treasury_expansion": "1/5",
"min_stake_pool_cost": {
"ada": {
"lovelace": 170000000
}
},
"min_utxo_deposit_constant": {
"ada": {
"lovelace": 0
}
},
"min_utxo_deposit_coefficient": 4310,
"plutus_cost_models": {
"plutus_v1": [
100788,
420,
1,
1,
1000,
173,
0,
1,
1000,
59957,
4,
1,
11183,
32,
201305,
8356,
4,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
100,
100,
16000,
100,
94375,
32,
132994,
32,
61462,
4,
72010,
178,
0,
1,
22151,
32,
91189,
769,
4,
2,
85848,
228465,
122,
0,
1,
1,
1000,
42921,
4,
2,
24548,
29498,
38,
1,
898148,
27279,
1,
51775,
558,
1,
39184,
1000,
60594,
1,
141895,
32,
83150,
32,
15299,
32,
76049,
1,
13169,
4,
22100,
10,
28999,
74,
1,
28999,
74,
1,
43285,
552,
1,
44749,
541,
1,
33852,
32,
68246,
32,
72362,
32,
7243,
32,
7391,
32,
11546,
32,
85848,
228465,
122,
0,
1,
1,
90434,
519,
0,
1,
74433,
32,
85848,
228465,
122,
0,
1,
1,
85848,
228465,
122,
0,
1,
1,
270652,
22588,
4,
1457325,
64566,
4,
20467,
1,
4,
0,
141992,
32,
100788,
420,
1,
1,
81663,
32,
59498,
32,
20142,
32,
24588,
32,
20744,
32,
25933,
32,
24623,
32,
53384111,
14333,
10
],
"plutus_v2": [
100788,
420,
1,
1,
1000,
173,
0,
1,
1000,
59957,
4,
1,
11183,
32,
201305,
8356,
4,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
100,
100,
16000,
100,
94375,
32,
132994,
32,
61462,
4,
72010,
178,
0,
1,
22151,
32,
91189,
769,
4,
2,
85848,
228465,
122,
0,
1,
1,
1000,
42921,
4,
2,
24548,
29498,
38,
1,
898148,
27279,
1,
51775,
558,
1,
39184,
1000,
60594,
1,
141895,
32,
83150,
32,
15299,
32,
76049,
1,
13169,
4,
22100,
10,
28999,
74,
1,
28999,
74,
1,
43285,
552,
1,
44749,
541,
1,
33852,
32,
68246,
32,
72362,
32,
7243,
32,
7391,
32,
11546,
32,
85848,
228465,
122,
0,
1,
1,
90434,
519,
0,
1,
74433,
32,
85848,
228465,
122,
0,
1,
1,
85848,
228465,
122,
0,
1,
1,
955506,
213312,
0,
2,
270652,
22588,
4,
1457325,
64566,
4,
20467,
1,
4,
0,
141992,
32,
100788,
420,
1,
1,
81663,
32,
59498,
32,
20142,
32,
24588,
32,
20744,
32,
25933,
32,
24623,
32,
43053543,
10,
53384111,
14333,
10,
43574283,
26308,
10
],
"plutus_v3": [
100788,
420,
1,
1,
1000,
173,
0,
1,
1000,
59957,
4,
1,
11183,
32,
201305,
8356,
4,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
16000,
100,
100,
100,
16000,
100,
94375,
32,
132994,
32,
61462,
4,
72010,
178,
0,
1,
22151,
32,
91189,
769,
4,
2,
85848,
123203,
7305,
-900,
1716,
549,
57,
85848,
0,
1,
1,
1000,
42921,
4,
2,
24548,
29498,
38,
1,
898148,
27279,
1,
51775,
558,
1,
39184,
1000,
60594,
1,
141895,
32,
83150,
32,
15299,
32,
76049,
1,
13169,
4,
22100,
10,
28999,
74,
1,
28999,
74,
1,
43285,
552,
1,
44749,
541,
1,
33852,
32,
68246,
32,
72362,
32,
7243,
32,
7391,
32,
11546,
32,
85848,
123203,
7305,
-900,
1716,
549,
57,
85848,
0,
1,
90434,
519,
0,
1,
74433,
32,
85848,
123203,
7305,
-900,
1716,
549,
57,
85848,
0,
1,
1,
85848,
123203,
7305,
-900,
1716,
549,
57,
85848,
0,
1,
955506,
213312,
0,
2,
270652,
22588,
4,
1457325,
64566,
4,
20467,
1,
4,
0,
141992,
32,
100788,
420,
1,
1,
81663,
32,
59498,
32,
20142,
32,
24588,
32,
20744,
32,
25933,
32,
24623,
32,
43053543,
10,
53384111,
14333,
10,
43574283,
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16000,
100,
16000,
100,
962335,
18,
2780678,
6,
442008,
1,
52538055,
3756,
18,
267929,
18,
76433006,
8868,
18,
52948122,
18,
1995836,
36,
3227919,
12,
901022,
1,
166917843,
4307,
36,
284546,
36,
158221314,
26549,
36,
74698472,
36,
333849714,
1,
254006273,
72,
2174038,
72,
2261318,
64571,
4,
207616,
8310,
4,
1293828,
28716,
63,
0,
1,
1006041,
43623,
251,
0,
1
]
},
"script_execution_prices": {
"memory": "577/10000",
"cpu": "721/10000000"
},
"max_execution_units_per_transaction": {
"memory": 14000000,
"cpu": 10000000000
},
"max_execution_units_per_block": {
"memory": 62000000,
"cpu": 20000000000
},
"max_value_size": {
"bytes": 5000
},
"collateral_percentage": 150,
"max_collateral_inputs": 3,
"version": {
"major": 9,
"minor": 0
},
"stake_pool_voting_thresholds": {
"no_confidence": "51/100",
"constitutional_committee": {
"default": "51/100",
"state_of_no_confidence": "51/100"
},
"hard_fork_initiation": "51/100",
"protocol_parameters_update": {
"security": "51/100"
}
},
"delegate_representative_voting_thresholds": {
"no_confidence": "67/100",
"constitutional_committee": {
"default": "67/100",
"state_of_no_confidence": "3/5"
},
"constitution": "3/4",
"hard_fork_initiation": "3/5",
"protocol_parameters_update": {
"network": "67/100",
"economic": "67/100",
"technical": "67/100",
"governance": "3/4"
},
"treasury_withdrawals": "67/100"
},
"constitutional_committee_min_size": 7,
"constitutional_committee_max_term_length": 146,
"governance_action_lifetime": 6,
"governance_action_deposit": {
"ada": {
"lovelace": 100000000000
}
},
"delegate_representative_deposit": {
"ada": {
"lovelace": 500000000
}
},
"delegate_representative_max_idle_time": 20
},
"last_updated": {
"timestamp": "2024-08-29 16:03:26",
"block_hash": "ebe27467ad34f4ecb80a3a537aae2e084e34d751426d484f87a5a6a9db4c216f",
"block_slot": 69264206
}
}Authorizations
Project API Key
Response
Get protocol params
Timestamped response. Returns the endpoint response data along with the chain-tip of the indexer, which details at which point in the chain's history the data was correct as-of.
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