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Regular Expressions

A sequence of characters that define a search pattern, commonly used for string matching, validation, and text manipulation across programming languages and data processing pipelines. Regular expressions are supported natively in virtually every programming language and are foundational to text processing, log analysis, data validation, and search tooling.

Regular Expressions is profiled on the APIs.io network. Tagged areas include Pattern Matching, Programming, String Manipulation, Text Processing, and Validation.

The Regular Expressions catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Regular Expressions’ developer surface includes documentation, code examples, and 12 more developer resources.

🌐 Visit website 📡 Source on GitHub
23.4/100 emerging ▬ flat Agent 7/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
Pattern MatchingProgrammingString ManipulationText ProcessingValidationSearchParsing

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 23.4/100 · emerging
Contract Quality 3.8 / 25
Developer Ergonomics 1.7 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 0.7 / 13
Governance 10.4 / 12
Discoverability 6.8 / 10
Agent readiness — 7/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/regular-expressions: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Regular Expressions Context

5 classes · 9 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Regular Expressions API Rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

Regular Expression Pattern

13 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Regular Expressions Pattern Structure

0 properties

JSON STRUCTURE

Examples 1

Example request and response payloads for these APIs.

Regular Expressions Email Pattern Example

13 fields

EXAMPLE

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Regular Expressions Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Documentation 6

Reference material describing how the API behaves

Documentation
Documentation
 Documentation
Documentation
 Documentation
Documentation
 Documentation
Documentation
 Documentation
Documentation
 JSONSchema
JSONSchema

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

JSONStructure
JSONStructure
 JSONLD
JSONLD
 Vocabulary
Vocabulary

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrg
GitHubOrg
 Examples
Examples

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 2

The organization behind the API

Website
Website
 Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: regular-expressions
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/regular-expressions.png
name: Regular Expressions
description: A sequence of characters that define a search pattern, commonly used for string matching, validation, and text
  manipulation across programming languages and data processing pipelines. Regular expressions are supported natively in virtually
  every programming language and are foundational to text processing, log analysis, data validation, and search tooling.
type: Index
url: https://raw.githubusercontent.com/api-evangelist/regular-expressions/refs/heads/main/apis.yml
tags:
- Pattern Matching
- Programming
- String Manipulation
- Text Processing
- Validation
- Search
- Parsing
created: '2025-01-01'
modified: '2026-05-02'
specificationVersion: '0.19'
apis: []
common:
- type: DomainSecurity
  url: security/regular-expressions-domain-security.yml
- type: Website
  url: https://www.regular-expressions.info/
  name: Regular-Expressions.info
- type: Website
  url: https://regex101.com/
  name: Regex101 - Online Regex Tester and Debugger
- type: Documentation
  url: https://docs.python.org/3/library/re.html
  name: Python re Module Documentation
- type: Documentation
  url: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_expressions
  name: MDN JavaScript Regular Expressions Guide
- type: Documentation
  url: https://www.pcre.org/
  name: PCRE - Perl Compatible Regular Expressions
- type: GitHubOrg
  url: https://github.com/nicowillis/awesome-regex
  name: Awesome Regex - Curated Regex Resources
- type: Documentation
  url: https://regexlib.com/
  name: Regular Expression Library - Community Pattern Repository
- type: Documentation
  url: https://en.wikipedia.org/wiki/Regular_expression
  name: Regular Expression - Wikipedia
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/regular-expressions/refs/heads/main/json-schema/regular-expressions-pattern-schema.json
  name: Regular Expression Pattern JSON Schema
- type: JSONStructure
  url: https://raw.githubusercontent.com/api-evangelist/regular-expressions/refs/heads/main/json-structure/regular-expressions-pattern-structure.json
  name: Regular Expression Pattern JSON Structure
- type: JSONLD
  url: https://raw.githubusercontent.com/api-evangelist/regular-expressions/refs/heads/main/json-ld/regular-expressions-context.jsonld
  name: Regular Expressions JSON-LD Context
- type: Vocabulary
  url: https://raw.githubusercontent.com/api-evangelist/regular-expressions/refs/heads/main/vocabulary/regular-expressions-vocabulary.yml
  name: Regular Expressions Vocabulary
- type: Examples
  url: https://raw.githubusercontent.com/api-evangelist/regular-expressions/refs/heads/main/examples/regular-expressions-email-pattern-example.json
  name: Email Pattern Example
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com