Authorizations
x402 blockchain payment authorization header containing signed EIP-3009 Transfer with Authorization
Overview
String Utilities
- POSTReverse String
- POSTSnake to Camel Case
- POSTCamel to Snake Case
- POSTConvert to Uppercase
- POSTConvert to Lowercase
- POSTCapitalize Words
- POSTCapitalize First Letter
- POSTTrim Whitespace
- POSTCheck String Contains
- POSTReplace All Occurrences
- POSTCount Occurrences
- POSTCheck Starts With
- POSTCheck Ends With
- POSTExtract Substring
- POSTRemove Non-Alphanumeric
- POSTNormalize Whitespace
- POSTGet String Length
- POSTTruncate String
- POSTSlugify String
- POSTCheck Palindrome
- POSTRepeat String
UUID Utilities
Color Converter
Number Base Converter
Web3 EVM API
- Web3 EVM API
- POSTGet Supported Chains
- POSTCheck Supported Chain
- POSTGet Block Number
- POSTGet Block by Hash
- POSTEth Get Block By Number
- POSTEth Get Block Transaction Count By Hash
- POSTEth Get Block Transaction Count By Number
- POSTSend Raw Transaction
- POSTEth Get Transaction By Hash
- POSTEth Get Transaction Receipt
- POSTEth Get Transaction By Block Hash And Index
- POSTEth Get Transaction Count
- POSTGet Balance
- POSTEth Get Code
- POSTEth Get Storage At
- POSTEth Call
- POSTEth Estimate Gas
- POSTEth Get Logs
- POSTEth Get Filter Changes
- POSTEth Uninstall Filter
- POSTEth Gas Price
- POSTEth Protocol Version
- POSTEth Coinbase
- POSTEth Get Uncle Count By Block Hash
- POSTEth Get Uncle Count By Block Number
- POSTEth Get Uncle By Block Hash And Index
- POSTEth Get Uncle By Block Number And Index
- POSTNet Listening
- POSTNet Version
- POSTWeb3 Client Version
- POSTWeb3 Sha3
Check String Contains
Copy
curl --request POST \
--url https://api.dirtroad.dev/tools/string-utils/contains \
--header 'Content-Type: application/json' \
--header 'X-Payment: <api-key>' \
--data '{
"str": "<string>",
"substring": "<string>",
"caseSensitive": false
}'Copy
{
"str": "<string>",
"substring": "<string>",
"caseSensitive": true,
"result": true
}String Utilities
Check String Contains
Check if string contains a substring Requires x402 blockchain payment.
POST
/
tools
/
string-utils
/
contains
Check String Contains
Copy
curl --request POST \
--url https://api.dirtroad.dev/tools/string-utils/contains \
--header 'Content-Type: application/json' \
--header 'X-Payment: <api-key>' \
--data '{
"str": "<string>",
"substring": "<string>",
"caseSensitive": false
}'Copy
{
"str": "<string>",
"substring": "<string>",
"caseSensitive": true,
"result": true
}⌘I