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Regex Engine MCP - Test, Explain & Build Regex Patterns

Created By
OpenClaw AI18 days ago
MCP server for regex operations: test patterns, explain in plain English, build from natural language, find-and-replace, and extract with named capture groups. 5 tools on Cloudflare Workers.
Overview

OpenClaw MCP Servers

49 AI tools. 9 servers. Zero setup. Connect in 10 seconds.

MIT MCP CF 9 49 Smithery ClawHub Release

Cursor InstallClaude DesktopQuick ConnectAll 49 ToolsGet Pro Key


Why OpenClaw?

FeatureOpenClawOthers
Setup time10 seconds (paste URL)npm install + config + restart
Server managementZero (Cloudflare edge)Self-host or Docker
Uptime99.9% (global CDN)Depends on your infra
Latency<100ms (edge compute)200-500ms (centralized)
Free tierYes (daily limits)Most require API keys
Pro upgrade$9/mo = ALL 9 serversPer-server pricing

Support OpenClaw

Your support helps keep these 9 MCP servers running and free for everyone!

Install in Cursor (One Click)

ServerInstallToolsFree/day
JSON ToolkitInstall620
Regex EngineInstall520
Color PaletteInstall525
TimestampInstall530
Prompt EnhancerInstall610
Market IntelligenceInstall610
Fortune & TarotInstall350
Content PublisherInstall85
AI Tool CompareInstall510

Also on Smithery and ClawHub

Install in Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "openclaw-json": { "type": "streamable-http", "url": "https://json-toolkit-mcp.yagami8095.workers.dev/mcp" },
    "openclaw-regex": { "type": "streamable-http", "url": "https://regex-engine-mcp.yagami8095.workers.dev/mcp" },
    "openclaw-colors": { "type": "streamable-http", "url": "https://color-palette-mcp.yagami8095.workers.dev/mcp" },
    "openclaw-timestamp": { "type": "streamable-http", "url": "https://timestamp-converter-mcp.yagami8095.workers.dev/mcp" },
    "openclaw-prompt": { "type": "streamable-http", "url": "https://prompt-enhancer-mcp.yagami8095.workers.dev/mcp" },
    "openclaw-intel": { "type": "streamable-http", "url": "https://openclaw-intel-mcp.yagami8095.workers.dev/mcp" },
    "openclaw-fortune": { "type": "streamable-http", "url": "https://openclaw-fortune-mcp.yagami8095.workers.dev/mcp" },
    "openclaw-moltbook": { "type": "streamable-http", "url": "https://moltbook-publisher-mcp.yagami8095.workers.dev/mcp" },
    "openclaw-agentforge": { "type": "streamable-http", "url": "https://agentforge-compare-mcp.yagami8095.workers.dev/mcp" }
  }
}

Quick Connect (Any MCP Client)

ClientConfig file
Claude Code~/.claude.json or .mcp.json
Cursor.cursor/mcp.json
Windsurf.windsurf/mcp.json
OpenClawopenclaw.jsontools.mcp
ClineVS Code MCP settings
AnyStreamable HTTP transport

Servers & Tools

JSON Toolkit — 6 tools

https://json-toolkit-mcp.yagami8095.workers.dev/mcp

ToolWhat it does
json_formatPretty-print or minify JSON
json_validateValidate JSON with line/column errors
json_diffCompare two JSON values (added/removed/changed)
json_queryJSONPath query (dot notation, wildcards, filters)
json_transformFlatten, unflatten, pick, omit, rename keys
json_schema_generateGenerate JSON Schema from sample data

Regex Engine — 5 tools

https://regex-engine-mcp.yagami8095.workers.dev/mcp

ToolWhat it does
regex_testTest pattern, get matches + positions + groups
regex_explainToken-by-token plain English explanation
regex_buildBuild regex from natural language (25+ patterns)
regex_replaceFind-replace with backreferences
regex_extractExtract all matches with named groups

Color Palette — 5 tools

https://color-palette-mcp.yagami8095.workers.dev/mcp

ToolWhat it does
generate_paletteHarmonious palette (complementary, triadic, etc)
contrast_checkWCAG 2.1 AA/AAA compliance
color_convertHex/RGB/HSL/CSS named (140 colors)
css_gradientLinear/radial/conic gradient CSS
tailwind_colorsTailwind v3 lookup + nearest match

Timestamp Converter — 5 tools

https://timestamp-converter-mcp.yagami8095.workers.dev/mcp

ToolWhat it does
convert_timestampUnix/ISO/human/relative auto-detect
timezone_convertBetween timezones (7 zones at once)
parse_cronCron expression → human description + next 5 runs
time_diffDifference in seconds/minutes/hours/days
format_durationSeconds ↔ human string ↔ ISO 8601

Prompt Enhancer — 6 tools

https://prompt-enhancer-mcp.yagami8095.workers.dev/mcp

ToolWhat it doesTier
enhance_promptOptimize prompt structure + clarityFree
analyze_promptQuality score + issues + suggestionsFree
convert_prompt_formatPlain/XML/Markdown/JSON conversionFree
generate_system_promptSystem prompt for any role/taskFree
prompt_template_library30+ production templatesPro
purchase_pro_keyUnlock Pro features

Market Intelligence — 6 tools

https://openclaw-intel-mcp.yagami8095.workers.dev/mcp

ToolWhat it doesTier
get_ai_market_reportAI agent market report + trendsFree
get_report_by_idSpecific report deep-divePro
list_reportsBrowse all available reportsFree
get_market_statsReal-time ecosystem statsFree
purchase_api_keyGet Pro key for full access
validate_api_keyCheck key validity + quotaFree

Fortune & Tarot — 3 tools

https://openclaw-fortune-mcp.yagami8095.workers.dev/mcp

ToolWhat it does
get_daily_fortuneDaily horoscope + tarot reading
get_fortune_rankingToday's zodiac ranking (1st-12th)
get_all_fortunesAll 12 signs at once

Content Publisher — 8 tools

https://moltbook-publisher-mcp.yagami8095.workers.dev/mcp

ToolWhat it doesTier
convert_markdown_to_htmlMD → HTML for note.com/Zenn/QiitaFree
optimize_for_seoSEO analysis for Japanese contentFree
translate_en_to_jpNatural English → JapaneseFree
generate_article_outlineStructured outline from topicFree
get_trending_topicsTrending on note.com/Zenn/QiitaPro
cross_post_formatFormat for all 3 platformsPro
analyze_article_performancePredict performance before publishPro
purchase_pro_keyUnlock Pro features ($12/mo)

AI Tool Compare — 5 tools

https://agentforge-compare-mcp.yagami8095.workers.dev/mcp

ToolWhat it doesTier
compare_ai_toolsSide-by-side AI tool comparisonFree
get_tool_profileDetailed tool profile + pricingFree
recommend_toolAI recommendation for your needsPro
get_pricing_comparisonFull pricing tableFree
purchase_pro_keyUnlock AI recommendations

Pricing & Pro API

TierCostWhat you get
Free$0Limited daily calls per server (see table above)
Pro$9/mo1,000 calls/day across ALL 9 servers + Pro-only tools
x402$0.05/callPay-per-call with USDC on Base L2 (auto-pay, no signup)

Get Pro Key

MethodLink
Stripe (Card)Buy Pro Key - $9/mo
PayPalpaypal.me/Yagami8095/9
Product Storeproduct-store.yagami8095.workers.dev

After payment, email yagami8095@gmail.com with your receipt. API key delivered within 24h.

Intel Pro (Advanced)

Deep AI market analysis powered by DeepSeek R1:

TierCostAccess
Free$05 queries/day
Pro$19/moUnlimited + deep analysis
Agent$0.05/queryAPI access for AI agents

Intel Pro Dashboard

x402 Auto-Pay

When rate limited, servers return HTTP 402 with payment headers. Agents using @x402/fetch automatically pay and retry:

HTTP/1.1 402 Payment Required
X-Payment-Network: base
X-Payment-Amount: 0.05
X-Payment-Currency: USDC
X-Payment-Address: 0x72aa56DAe3819c75C545c57778cc404092d60731

Also Available On

PlatformStatusLink
Smithery9/9 Publishedsmithery.ai/server/openclaw-ai
ClawHub9/9 Skillsclawhub.ai
MCPize9/9 Monetizedmcpize.com
Apify9/9 Publicapify.com/yagamiyedan
Poe9/9 Livepoe.com
Official MCP Registry9/9 Activeregistry.modelcontextprotocol.io
PulseMCP9/9 Indexedpulsemcp.com
mcpservers.org9/9 Indexedmcpservers.org
mcp.so9/9 Indexedmcp.so

npm Package

npm install openclaw-mcp-servers
const openclaw = require('openclaw-mcp-servers');
console.log(JSON.stringify(openclaw.config(), null, 2));
npx openclaw-mcp-servers --config    # MCP config JSON
npx openclaw-mcp-servers --list      # All 49 tools
npx openclaw-mcp-servers --servers   # 9 endpoint URLs

Architecture

All servers run on Cloudflare Workers (edge compute, 300+ PoPs worldwide). Streamable HTTP transport per MCP spec 2025-03-26. Rate limiting via Cloudflare KV. x402 payment protocol compliant.

Support

Sponsor PayPal Pro Key

License

MIT


Built by OpenClaw Intelligence | 9 servers, 49 tools, 10+ platforms

Server Config

{
  "mcpServers": {
    "regex-engine": {
      "url": "https://regex-engine-mcp.yagami8095.workers.dev/mcp"
    }
  }
}
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