String

String nodes handle text processing — concatenation, splitting, searching, formatting, and regular expressions. They are essential for parsing API responses, building messages, and extracting data from unstructured text.

All String nodes are pure (blue header, no execution pins).

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Concat

Concatenate two strings.

Pure. Use Concat to build messages, URLs, or any combined text from parts.

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String Length

Get the character count of a string.

Pure. Use String Length to validate input lengths or check for empty strings.

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Split

Split a string into an array using a separator.

Pure. Use Split to parse comma-separated values, break paths into segments, or tokenize text.

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Join

Join an array of values into a single string with a separator.

Pure. Use Join to format lists for display — combining IP addresses, usernames, or tags into a readable string.

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Replace

Replace all occurrences of a substring with another string.

Pure. Use Replace for simple text transformations — masking sensitive data, normalizing formats, or cleaning input.

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Substring

Extract a portion of a string by position and length.

Pure. Use Substring to extract fixed-position fields — date portions, log prefixes, or protocol headers.

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Contains

Check if a string contains a substring.

Pure. Use Contains for simple pattern detection — checking if a response body contains an error message or a header contains a token.

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Starts With

Check if a string starts with a given prefix.

Pure. Use Starts With to classify strings by prefix — URLs starting with "https://", log lines starting with "ERROR".

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Ends With

Check if a string ends with a given suffix.

Pure. Use Ends With to check file extensions, domain suffixes, or line terminators.

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To Upper

Convert a string to uppercase.

Pure. Use To Upper for case-insensitive comparison prep or formatting display values.

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To Lower

Convert a string to lowercase.

Pure. Use To Lower for normalizing email addresses, domain names, or lookup keys.

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Trim

Remove leading and trailing whitespace from a string.

Pure. Use Trim to clean user input, API responses, or parsed data that may have extra whitespace.

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Index Of

Find the position of a substring within a string. Returns -1 if not found.

Pure. Use Index Of to locate specific content within text — finding delimiters or markers.

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Format

Template string interpolation. Replaces placeholders in a template with values.

Pure. Use Format to build structured messages — alert notifications, API payloads, or log entries with dynamic values.

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Pad

Pad a string to a target length with a specified character.

Pure. Use Pad for fixed-width formatting — zero-padding IDs, aligning columns, or building fixed-length records.

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Repeat

Repeat a string N times.

Pure. Use Repeat to generate separators, padding strings, or repeated patterns.

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Regex Match

Match a string against a regular expression and return the match details.

Pure. Use Regex Match to extract structured data from text — IP addresses from logs, version numbers from strings.

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Regex Replace

Replace text using a regular expression pattern.

Pure. Use Regex Replace for advanced text transformations — redacting sensitive fields, normalizing formats, or stripping markup.

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Regex Test

Test if a regular expression matches a string. Returns a boolean.

Pure. Use Regex Test for pattern validation — checking if a string is a valid email, IP address, or UUID format.

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Regex Split

Split a string using a regular expression as the delimiter.

Pure. Use Regex Split to tokenize text with complex delimiters — splitting on multiple whitespace characters or mixed separators.

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Related categories

• Comparison — compare string values for equality
• Encoding — encode/decode strings to Base64, URL, or hex
• Data Formats — parse and generate CSV, XML, YAML