curl -X POST "https://api.blockdb.io/v1/evm/entities/pools/fee-terms" \
-H "Authorization: Bearer $BLOCKDB_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"chain_id": 1,
"from_block": 19000000,
"to_block": 19010000,
"pool_addresses": [
"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640"
],
"limit": 250
}'
#include <curl/curl.h>
#include <stdio.h>
#include <stdlib.h>
int main(void) {
CURL *curl = curl_easy_init();
if (!curl) return 1;
const char *token = getenv("BLOCKDB_API_KEY");
char auth_header[256];
snprintf(auth_header, sizeof(auth_header), "Authorization: Bearer %s", token ? token : "");
const char *payload = "{\"chain_id\":1,\"from_block\":19000000,\"to_block\":19010000,\"pool_addresses\":[\"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640\"],\"limit\":250}";
struct curl_slist *headers = NULL;
headers = curl_slist_append(headers, auth_header);
headers = curl_slist_append(headers, "Content-Type: application/json");
curl_easy_setopt(curl, CURLOPT_URL, "https://api.blockdb.io/v1/evm/entities/pools/fee-terms");
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, payload);
CURLcode res = curl_easy_perform(curl);
curl_slist_free_all(headers);
curl_easy_cleanup(curl);
return res == CURLE_OK ? 0 : 1;
}
using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
class Program
{
static async Task Main()
{
using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization =
new AuthenticationHeaderValue("Bearer", Environment.GetEnvironmentVariable("BLOCKDB_API_KEY"));
var payload = new StringContent(
"{\"chain_id\":1,\"from_block\":19000000,\"to_block\":19010000,\"pool_addresses\":[\"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640\"],\"limit\":250}",
Encoding.UTF8,
"application/json"
);
var response = await client.PostAsync("https://api.blockdb.io/v1/evm/entities/pools/fee-terms", payload);
response.EnsureSuccessStatusCode();
var body = await response.Content.ReadAsStringAsync();
Console.WriteLine(body);
}
}
import os
import requests
response = requests.post(
"https://api.blockdb.io/v1/evm/entities/pools/fee-terms",
headers={
"Authorization": f"Bearer {os.getenv('BLOCKDB_API_KEY')}",
"Content-Type": "application/json"
},
json={'chain_id': 1,
'from_block': 19000000,
'to_block': 19010000,
'pool_addresses': ['88e6a0c2ddd26feeb64f039a2c41296fcb3f5640'],
'limit': 250}
)
data = response.json()
print(data)
const response = await fetch("https://api.blockdb.io/v1/evm/entities/pools/fee-terms", {
method: "POST",
headers: {
"Authorization": `Bearer ${process.env.BLOCKDB_API_KEY}`,
"Content-Type": "application/json"
},
body: JSON.stringify({
"chain_id": 1,
"from_block": 19000000,
"to_block": 19010000,
"pool_addresses": [
"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640"
],
"limit": 250
})
});
const data = await response.json();
console.log(data);
package main
import (
"fmt"
"net/http"
"os"
"strings"
)
func main() {
payload := strings.NewReader(`{
"chain_id": 1,
"from_block": 19000000,
"to_block": 19010000,
"pool_addresses": [
"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640"
],
"limit": 250
}`)
req, _ := http.NewRequest("POST", "https://api.blockdb.io/v1/evm/entities/pools/fee-terms", payload)
req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", os.Getenv("BLOCKDB_API_KEY")))
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, _ := client.Do(req)
defer resp.Body.Close()
// Handle response
}
{
"meta": {
"chain_id": 1,
"request_window": {
"from_block": 19000000,
"to_block": 19010000
},
"resolved_window": {
"from_block": 19000000,
"to_block": 19010000
},
"filters": {
"pool_addresses": [
"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640"
],
"limit": 250,
"cursor": null
}
},
"data": [
{
"pool_uid": "00000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
"exchange_id": 3,
"type_id": 302,
"block_number": 19001234,
"block_time": "2025-12-20T12:34:56Z",
"tx_index": 7,
"log_index": 12,
"total_fee": "0.000500000000000000",
"user_fee": "0.003000000000000000",
"protocol_fee": "0.000000000000000000",
"extra_fee": "0.000000000000000000",
"_tracing_id": "020400000000000000000000000000007401",
"_parent_tracing_ids": ["010300000000000000000000000000007401"],
"_created_at": "2025-12-20T12:35:01Z",
"_updated_at": "2025-12-20T12:35:01Z"
}
],
"cursor": null,
"page_count": 1
}
{
"error": {
"code": "BAD_REQUEST",
"http_status": 400,
"message": "The request contains invalid or missing parameters.",
"hint": "Validate all required parameters against the endpoint specification before retrying.",
"severity": "error",
"retryable": false,
"details": {
"invalid_parameters": [
{
"name": "chain_id",
"location": "query",
"reason": "missing",
"expected": "positive integer, e.g. 1"
},
{
"name": "from_timestamp",
"location": "query",
"reason": "invalid_format",
"expected": "ISO-8601 UTC timestamp, e.g. 2025-11-11T00:00:00Z"
}
]
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/home"
}
}
{
"error": {
"code": "UNAUTHORIZED",
"http_status": 401,
"message": "Invalid or missing API key.",
"hint": "Ensure you send 'Authorization: Bearer <API_KEY>' in every request to this endpoint.",
"severity": "error",
"retryable": false,
"details": {
"auth_scheme": "bearer",
"expected_header": "Authorization: Bearer <API_KEY>",
"provided_header": "Authorization: <REDACTED_OR_MISSING>",
"token_status": "invalid_or_missing",
"recommendation": "Regenerate the API key if you suspect it is expired or compromised."
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/authorization"
}
}
{
"error": {
"code": "FORBIDDEN",
"http_status": 403,
"message": "Your API key does not have permission to access this endpoint.",
"hint": "Upgrade your subscription tier or request additional access.",
"severity": "warning",
"retryable": false,
"details": {
"required_plan": "production",
"your_plan": null,
"contact": "support@blockdb.io",
"recommendation": "Contact BlockDB Support Team via email support@blockdb.io."
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "NOT_FOUND",
"http_status": 404,
"message": "The requested resource does not exist.",
"hint": "Verify the API endpoint",
"severity": "warning",
"retryable": false,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "PAYLOAD_TOO_LARGE",
"http_status": 413,
"message": "The requested response exceeds the maximum allowed size of 10 MB.",
"hint": "Reduce the limit, narrow the block or time window, or apply additional filters before retrying.",
"details": {
"max_allowed_bytes": 10485760,
"estimated_response_bytes": 15360000,
"recommended_actions": [
"Decrease the 'limit' parameter value",
"Shorten the block range or time window",
"Filter by fewer pools or exchanges"
]
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/pagination-and-limits"
}
}
{
"error": {
"code": "CHAIN_NOT_SUPPORTED",
"http_status": 422,
"message": "chain_id=137 is not supported.",
"hint": "Use a supported chain_id. Consult the documentation for the list of available chains.",
"severity": "error",
"retryable": false,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "RATE_LIMIT_EXCEEDED",
"http_status": 429,
"message": "You have exceeded the allowed request rate.",
"hint": "Introduce client-side throttling or exponential backoff and respect the retry_after_seconds value.",
"details": {
"limit_rps": 1000, # configured rate limit
"current_estimated_rps": 73,
"retry_after_seconds": 2,
"limit_scope": "api_key",
"limit_window_seconds": 1
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/rate-limiting"
}
}
{
"error": {
"code": "INTERNAL_SERVER_ERROR",
"http_status": 500,
"message": "An unexpected server error occurred.",
"hint": "This error is not caused by your request. You may retry after a short delay.",
"severity": "critical",
"retryable": true,
"details": {
"incident_id": "INC-2025-11-11-123456",
"temporary_issue": true,
"expected_recovery_seconds": 5
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "SERVICE_UNAVAILABLE",
"http_status": 503,
"message": "The service is temporarily unable to handle the request.",
"hint": "The database connection pool is briefly saturated. Retry after a short delay.",
"severity": "warning",
"retryable": true,
"details": null,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
Entities
Pools · Fee Terms
Read versioned AMM pool fee configuration (total fee and fee-split terms) for joinable pool economics.
POST
/
v1
/
evm
/
entities
/
pools
/
fee-terms
curl -X POST "https://api.blockdb.io/v1/evm/entities/pools/fee-terms" \
-H "Authorization: Bearer $BLOCKDB_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"chain_id": 1,
"from_block": 19000000,
"to_block": 19010000,
"pool_addresses": [
"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640"
],
"limit": 250
}'
#include <curl/curl.h>
#include <stdio.h>
#include <stdlib.h>
int main(void) {
CURL *curl = curl_easy_init();
if (!curl) return 1;
const char *token = getenv("BLOCKDB_API_KEY");
char auth_header[256];
snprintf(auth_header, sizeof(auth_header), "Authorization: Bearer %s", token ? token : "");
const char *payload = "{\"chain_id\":1,\"from_block\":19000000,\"to_block\":19010000,\"pool_addresses\":[\"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640\"],\"limit\":250}";
struct curl_slist *headers = NULL;
headers = curl_slist_append(headers, auth_header);
headers = curl_slist_append(headers, "Content-Type: application/json");
curl_easy_setopt(curl, CURLOPT_URL, "https://api.blockdb.io/v1/evm/entities/pools/fee-terms");
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, payload);
CURLcode res = curl_easy_perform(curl);
curl_slist_free_all(headers);
curl_easy_cleanup(curl);
return res == CURLE_OK ? 0 : 1;
}
using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
class Program
{
static async Task Main()
{
using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization =
new AuthenticationHeaderValue("Bearer", Environment.GetEnvironmentVariable("BLOCKDB_API_KEY"));
var payload = new StringContent(
"{\"chain_id\":1,\"from_block\":19000000,\"to_block\":19010000,\"pool_addresses\":[\"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640\"],\"limit\":250}",
Encoding.UTF8,
"application/json"
);
var response = await client.PostAsync("https://api.blockdb.io/v1/evm/entities/pools/fee-terms", payload);
response.EnsureSuccessStatusCode();
var body = await response.Content.ReadAsStringAsync();
Console.WriteLine(body);
}
}
import os
import requests
response = requests.post(
"https://api.blockdb.io/v1/evm/entities/pools/fee-terms",
headers={
"Authorization": f"Bearer {os.getenv('BLOCKDB_API_KEY')}",
"Content-Type": "application/json"
},
json={'chain_id': 1,
'from_block': 19000000,
'to_block': 19010000,
'pool_addresses': ['88e6a0c2ddd26feeb64f039a2c41296fcb3f5640'],
'limit': 250}
)
data = response.json()
print(data)
const response = await fetch("https://api.blockdb.io/v1/evm/entities/pools/fee-terms", {
method: "POST",
headers: {
"Authorization": `Bearer ${process.env.BLOCKDB_API_KEY}`,
"Content-Type": "application/json"
},
body: JSON.stringify({
"chain_id": 1,
"from_block": 19000000,
"to_block": 19010000,
"pool_addresses": [
"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640"
],
"limit": 250
})
});
const data = await response.json();
console.log(data);
package main
import (
"fmt"
"net/http"
"os"
"strings"
)
func main() {
payload := strings.NewReader(`{
"chain_id": 1,
"from_block": 19000000,
"to_block": 19010000,
"pool_addresses": [
"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640"
],
"limit": 250
}`)
req, _ := http.NewRequest("POST", "https://api.blockdb.io/v1/evm/entities/pools/fee-terms", payload)
req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", os.Getenv("BLOCKDB_API_KEY")))
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, _ := client.Do(req)
defer resp.Body.Close()
// Handle response
}
{
"meta": {
"chain_id": 1,
"request_window": {
"from_block": 19000000,
"to_block": 19010000
},
"resolved_window": {
"from_block": 19000000,
"to_block": 19010000
},
"filters": {
"pool_addresses": [
"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640"
],
"limit": 250,
"cursor": null
}
},
"data": [
{
"pool_uid": "00000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
"exchange_id": 3,
"type_id": 302,
"block_number": 19001234,
"block_time": "2025-12-20T12:34:56Z",
"tx_index": 7,
"log_index": 12,
"total_fee": "0.000500000000000000",
"user_fee": "0.003000000000000000",
"protocol_fee": "0.000000000000000000",
"extra_fee": "0.000000000000000000",
"_tracing_id": "020400000000000000000000000000007401",
"_parent_tracing_ids": ["010300000000000000000000000000007401"],
"_created_at": "2025-12-20T12:35:01Z",
"_updated_at": "2025-12-20T12:35:01Z"
}
],
"cursor": null,
"page_count": 1
}
{
"error": {
"code": "BAD_REQUEST",
"http_status": 400,
"message": "The request contains invalid or missing parameters.",
"hint": "Validate all required parameters against the endpoint specification before retrying.",
"severity": "error",
"retryable": false,
"details": {
"invalid_parameters": [
{
"name": "chain_id",
"location": "query",
"reason": "missing",
"expected": "positive integer, e.g. 1"
},
{
"name": "from_timestamp",
"location": "query",
"reason": "invalid_format",
"expected": "ISO-8601 UTC timestamp, e.g. 2025-11-11T00:00:00Z"
}
]
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/home"
}
}
{
"error": {
"code": "UNAUTHORIZED",
"http_status": 401,
"message": "Invalid or missing API key.",
"hint": "Ensure you send 'Authorization: Bearer <API_KEY>' in every request to this endpoint.",
"severity": "error",
"retryable": false,
"details": {
"auth_scheme": "bearer",
"expected_header": "Authorization: Bearer <API_KEY>",
"provided_header": "Authorization: <REDACTED_OR_MISSING>",
"token_status": "invalid_or_missing",
"recommendation": "Regenerate the API key if you suspect it is expired or compromised."
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/authorization"
}
}
{
"error": {
"code": "FORBIDDEN",
"http_status": 403,
"message": "Your API key does not have permission to access this endpoint.",
"hint": "Upgrade your subscription tier or request additional access.",
"severity": "warning",
"retryable": false,
"details": {
"required_plan": "production",
"your_plan": null,
"contact": "support@blockdb.io",
"recommendation": "Contact BlockDB Support Team via email support@blockdb.io."
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "NOT_FOUND",
"http_status": 404,
"message": "The requested resource does not exist.",
"hint": "Verify the API endpoint",
"severity": "warning",
"retryable": false,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "PAYLOAD_TOO_LARGE",
"http_status": 413,
"message": "The requested response exceeds the maximum allowed size of 10 MB.",
"hint": "Reduce the limit, narrow the block or time window, or apply additional filters before retrying.",
"details": {
"max_allowed_bytes": 10485760,
"estimated_response_bytes": 15360000,
"recommended_actions": [
"Decrease the 'limit' parameter value",
"Shorten the block range or time window",
"Filter by fewer pools or exchanges"
]
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/pagination-and-limits"
}
}
{
"error": {
"code": "CHAIN_NOT_SUPPORTED",
"http_status": 422,
"message": "chain_id=137 is not supported.",
"hint": "Use a supported chain_id. Consult the documentation for the list of available chains.",
"severity": "error",
"retryable": false,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "RATE_LIMIT_EXCEEDED",
"http_status": 429,
"message": "You have exceeded the allowed request rate.",
"hint": "Introduce client-side throttling or exponential backoff and respect the retry_after_seconds value.",
"details": {
"limit_rps": 1000, # configured rate limit
"current_estimated_rps": 73,
"retry_after_seconds": 2,
"limit_scope": "api_key",
"limit_window_seconds": 1
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/rate-limiting"
}
}
{
"error": {
"code": "INTERNAL_SERVER_ERROR",
"http_status": 500,
"message": "An unexpected server error occurred.",
"hint": "This error is not caused by your request. You may retry after a short delay.",
"severity": "critical",
"retryable": true,
"details": {
"incident_id": "INC-2025-11-11-123456",
"temporary_issue": true,
"expected_recovery_seconds": 5
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "SERVICE_UNAVAILABLE",
"http_status": 503,
"message": "The service is temporarily unable to handle the request.",
"hint": "The database connection pool is briefly saturated. Retry after a short delay.",
"severity": "warning",
"retryable": true,
"details": null,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
Overview
- Dataset ID:
0212 - Liquidity Pool Fee Terms - Description: Retrieves versioned fee terms for liquidity pools, including the total swap fee fraction (e.g.,
0.003) and optional split fractions across LP/user, protocol, and extra recipients. - CSV Sample: Download
- JSON Sample: Download
Parameters
Range Filters (mutually exclusive)
number
Starting block number (inclusive) for the query. Use with
to_block.number
Ending block number (inclusive) for the query. Use with
from_block.string
Starting timestamp (ISO-8601). If it falls between blocks, the next block after this timestamp is used. Use with
to_timestamp.string
Ending timestamp (ISO-8601). If it falls between blocks, the last block before this timestamp is used. Use with
from_timestamp.Scoping rule: Provide exactly one of:
- Block range —
from_blockandto_block - Time range —
from_timestampandto_timestamp - Direct selectors — presented below
Pool Selectors
number[]
Filter fee terms by exchange IDs. See the DigitalExchange enumeration for supported values.
string[]
Filter by BlockDB pool identifiers (
uid from /evm/entities/pools).string[]
Filter by pool contract addresses (hex string, 20 bytes, no
0x prefix).string[]
Filter by protocol-specific pool identifiers (e.g., Uniswap V4
pool_id).Pagination Controls
number
default:"250"
Recommended default
250; maximum 1000 to stay under ~10 MB responses.string
Pagination cursor from a prior call.
Response Fields
Meta
object
Echo of request metadata applied to the response.
number
EVM chain ID echoed from the request.
object
Pure echo of the window you sent (
from_block/to_block/from_timestamp/to_timestamp); unset bounds are null.object | null
The concrete window the query actually executed against, after resolving the request. For a block range on a time-bucketed endpoint (OHLC/VWAP/VWAP-aggregate/fiat VWAP),
from_timestamp/to_timestamp hold the resolved timestamp window (and from_block/to_block echo your request). For a time range on a block-keyed endpoint, from_block/to_block hold the resolved block range (and the timestamps echo your request). null for selector-only requests (no window). No extra database work is done — these are the values the query already computed.number | null
Resolved/echoed start block of the executed window.
number | null
Resolved/echoed end block of the executed window.
string | null
Resolved/echoed start timestamp (ISO-8601) of the executed window.
string | null
Resolved/echoed end timestamp (ISO-8601) of the executed window.
object
Filters echoed from the request (selectors, pagination state, etc.).
Data
object[]
Array of pool fee-terms records matching the request.
string
BlockDB pool identifier (
uid from /evm/entities/pools).number
Exchange/DEX identifier.
number
Pool type identifier.
number
Block height where the fee-terms record is anchored.
string
Block timestamp joined from the
blocks table for easier aggregation.number
Zero-based index of the parent transaction within the block.
number
Position of the log within the transaction.
string | null
Total fee fraction (e.g.,
0.003 = 0.30%). Returned as a string to preserve precision.string | null
Absolute fee fraction allocated to LPs/users (same units as
total_fee). Returned as a string to preserve precision.string | null
Absolute fee fraction allocated to protocol/treasury (same units as
total_fee). Returned as a string to preserve precision.string | null
Absolute fee fraction allocated to extra destinations (burn, staking, etc.) (same units as
total_fee). Returned as a string to preserve precision.string
Row-level lineage hash (hex string, no
0x prefix).string[]
Lineage references of immediate parents.
string
Record creation timestamp (ISO-8601).
string
Last update timestamp (ISO-8601).
Envelope Fields
string | null
Cursor token for pagination.
number
Number of records returned in
data.curl -X POST "https://api.blockdb.io/v1/evm/entities/pools/fee-terms" \
-H "Authorization: Bearer $BLOCKDB_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"chain_id": 1,
"from_block": 19000000,
"to_block": 19010000,
"pool_addresses": [
"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640"
],
"limit": 250
}'
#include <curl/curl.h>
#include <stdio.h>
#include <stdlib.h>
int main(void) {
CURL *curl = curl_easy_init();
if (!curl) return 1;
const char *token = getenv("BLOCKDB_API_KEY");
char auth_header[256];
snprintf(auth_header, sizeof(auth_header), "Authorization: Bearer %s", token ? token : "");
const char *payload = "{\"chain_id\":1,\"from_block\":19000000,\"to_block\":19010000,\"pool_addresses\":[\"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640\"],\"limit\":250}";
struct curl_slist *headers = NULL;
headers = curl_slist_append(headers, auth_header);
headers = curl_slist_append(headers, "Content-Type: application/json");
curl_easy_setopt(curl, CURLOPT_URL, "https://api.blockdb.io/v1/evm/entities/pools/fee-terms");
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, payload);
CURLcode res = curl_easy_perform(curl);
curl_slist_free_all(headers);
curl_easy_cleanup(curl);
return res == CURLE_OK ? 0 : 1;
}
using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
class Program
{
static async Task Main()
{
using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization =
new AuthenticationHeaderValue("Bearer", Environment.GetEnvironmentVariable("BLOCKDB_API_KEY"));
var payload = new StringContent(
"{\"chain_id\":1,\"from_block\":19000000,\"to_block\":19010000,\"pool_addresses\":[\"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640\"],\"limit\":250}",
Encoding.UTF8,
"application/json"
);
var response = await client.PostAsync("https://api.blockdb.io/v1/evm/entities/pools/fee-terms", payload);
response.EnsureSuccessStatusCode();
var body = await response.Content.ReadAsStringAsync();
Console.WriteLine(body);
}
}
import os
import requests
response = requests.post(
"https://api.blockdb.io/v1/evm/entities/pools/fee-terms",
headers={
"Authorization": f"Bearer {os.getenv('BLOCKDB_API_KEY')}",
"Content-Type": "application/json"
},
json={'chain_id': 1,
'from_block': 19000000,
'to_block': 19010000,
'pool_addresses': ['88e6a0c2ddd26feeb64f039a2c41296fcb3f5640'],
'limit': 250}
)
data = response.json()
print(data)
const response = await fetch("https://api.blockdb.io/v1/evm/entities/pools/fee-terms", {
method: "POST",
headers: {
"Authorization": `Bearer ${process.env.BLOCKDB_API_KEY}`,
"Content-Type": "application/json"
},
body: JSON.stringify({
"chain_id": 1,
"from_block": 19000000,
"to_block": 19010000,
"pool_addresses": [
"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640"
],
"limit": 250
})
});
const data = await response.json();
console.log(data);
package main
import (
"fmt"
"net/http"
"os"
"strings"
)
func main() {
payload := strings.NewReader(`{
"chain_id": 1,
"from_block": 19000000,
"to_block": 19010000,
"pool_addresses": [
"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640"
],
"limit": 250
}`)
req, _ := http.NewRequest("POST", "https://api.blockdb.io/v1/evm/entities/pools/fee-terms", payload)
req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", os.Getenv("BLOCKDB_API_KEY")))
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, _ := client.Do(req)
defer resp.Body.Close()
// Handle response
}
{
"meta": {
"chain_id": 1,
"request_window": {
"from_block": 19000000,
"to_block": 19010000
},
"resolved_window": {
"from_block": 19000000,
"to_block": 19010000
},
"filters": {
"pool_addresses": [
"88e6a0c2ddd26feeb64f039a2c41296fcb3f5640"
],
"limit": 250,
"cursor": null
}
},
"data": [
{
"pool_uid": "00000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
"exchange_id": 3,
"type_id": 302,
"block_number": 19001234,
"block_time": "2025-12-20T12:34:56Z",
"tx_index": 7,
"log_index": 12,
"total_fee": "0.000500000000000000",
"user_fee": "0.003000000000000000",
"protocol_fee": "0.000000000000000000",
"extra_fee": "0.000000000000000000",
"_tracing_id": "020400000000000000000000000000007401",
"_parent_tracing_ids": ["010300000000000000000000000000007401"],
"_created_at": "2025-12-20T12:35:01Z",
"_updated_at": "2025-12-20T12:35:01Z"
}
],
"cursor": null,
"page_count": 1
}
{
"error": {
"code": "BAD_REQUEST",
"http_status": 400,
"message": "The request contains invalid or missing parameters.",
"hint": "Validate all required parameters against the endpoint specification before retrying.",
"severity": "error",
"retryable": false,
"details": {
"invalid_parameters": [
{
"name": "chain_id",
"location": "query",
"reason": "missing",
"expected": "positive integer, e.g. 1"
},
{
"name": "from_timestamp",
"location": "query",
"reason": "invalid_format",
"expected": "ISO-8601 UTC timestamp, e.g. 2025-11-11T00:00:00Z"
}
]
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/home"
}
}
{
"error": {
"code": "UNAUTHORIZED",
"http_status": 401,
"message": "Invalid or missing API key.",
"hint": "Ensure you send 'Authorization: Bearer <API_KEY>' in every request to this endpoint.",
"severity": "error",
"retryable": false,
"details": {
"auth_scheme": "bearer",
"expected_header": "Authorization: Bearer <API_KEY>",
"provided_header": "Authorization: <REDACTED_OR_MISSING>",
"token_status": "invalid_or_missing",
"recommendation": "Regenerate the API key if you suspect it is expired or compromised."
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/authorization"
}
}
{
"error": {
"code": "FORBIDDEN",
"http_status": 403,
"message": "Your API key does not have permission to access this endpoint.",
"hint": "Upgrade your subscription tier or request additional access.",
"severity": "warning",
"retryable": false,
"details": {
"required_plan": "production",
"your_plan": null,
"contact": "support@blockdb.io",
"recommendation": "Contact BlockDB Support Team via email support@blockdb.io."
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "NOT_FOUND",
"http_status": 404,
"message": "The requested resource does not exist.",
"hint": "Verify the API endpoint",
"severity": "warning",
"retryable": false,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "PAYLOAD_TOO_LARGE",
"http_status": 413,
"message": "The requested response exceeds the maximum allowed size of 10 MB.",
"hint": "Reduce the limit, narrow the block or time window, or apply additional filters before retrying.",
"details": {
"max_allowed_bytes": 10485760,
"estimated_response_bytes": 15360000,
"recommended_actions": [
"Decrease the 'limit' parameter value",
"Shorten the block range or time window",
"Filter by fewer pools or exchanges"
]
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/pagination-and-limits"
}
}
{
"error": {
"code": "CHAIN_NOT_SUPPORTED",
"http_status": 422,
"message": "chain_id=137 is not supported.",
"hint": "Use a supported chain_id. Consult the documentation for the list of available chains.",
"severity": "error",
"retryable": false,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "RATE_LIMIT_EXCEEDED",
"http_status": 429,
"message": "You have exceeded the allowed request rate.",
"hint": "Introduce client-side throttling or exponential backoff and respect the retry_after_seconds value.",
"details": {
"limit_rps": 1000, # configured rate limit
"current_estimated_rps": 73,
"retry_after_seconds": 2,
"limit_scope": "api_key",
"limit_window_seconds": 1
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/rate-limiting"
}
}
{
"error": {
"code": "INTERNAL_SERVER_ERROR",
"http_status": 500,
"message": "An unexpected server error occurred.",
"hint": "This error is not caused by your request. You may retry after a short delay.",
"severity": "critical",
"retryable": true,
"details": {
"incident_id": "INC-2025-11-11-123456",
"temporary_issue": true,
"expected_recovery_seconds": 5
},
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
{
"error": {
"code": "SERVICE_UNAVAILABLE",
"http_status": 503,
"message": "The service is temporarily unable to handle the request.",
"hint": "The database connection pool is briefly saturated. Retry after a short delay.",
"severity": "warning",
"retryable": true,
"details": null,
"docs_url": "https://docs.blockdb.io/api-reference/overview/error-codes"
}
}
Last modified on July 19, 2026
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