Remote Servers

C

CronSpell

cronspell.mike-tusa.workers.dev

Validate and explain cron expressions; list next/previous run times in any time zone, DST-aware.

D

DomainAge

domainage.mike-tusa.workers.dev

Domain age and RDAP lookup: registration date, age, expiry, registrar, status and nameservers.

G

GlyphGuard

glyphguard.mike-tusa.workers.dev

Find hidden Unicode (zero-width, bidi, tag payloads), homoglyphs and lookalike names in text.

H

HrefGate

hrefgate.mike-tusa.workers.dev

Lint hreflang: codes, x-default, self-reference, canonical, return links. Never fetches URLs.

J

JsonMend

jsonmend.mike-tusa.workers.dev

Repair broken JSON from LLM output and validate it against a JSON Schema.

L

LinkPulse

linkpulse.mike-tusa.workers.dev

Check one web page for broken links, redirect chains hop by hop and mixed content. Free, no key.

Offline phone-number validation and formatting (E.164, region, line type). No carrier lookup.

English profanity filter: find and censor swear words, incl. obfuscations. Word list, not AI.

R

RichProof

richproof.mike-tusa.workers.dev

Validate JSON-LD structured data against the Schema.org vocabulary. Free; never fetches URLs.

Generate, validate and check robots.txt rules for AI crawlers. Free; optional Pro key.

S

SemverKit

semverkit.mike-tusa.workers.dev

Semver parse, compare, npm range checks, max-satisfying and version bumps (node-semver compatible).

T

ToolGrade

toolgrade.mike-tusa.workers.dev

Grade MCP tool definitions for agent-readiness: score, A-F grade, fixes, est. token cost

U

UAParse

uaparse.mike-tusa.workers.dev

Parse a User-Agent: browser, OS, device, plus bot, search crawler, AI crawler and AI agent flags

Free list of Rainmaker tools + paid need-to-tool router. x402 $0.005 USDC, Base. As is, no warranty.

https JSON URL to tidy markdown. x402 $0.005 USDC, Base. As is, no warranty.

HTML string or https URL to markdown. x402 $0.005 USDC, Base. As is, no warranty.

https text to counts and sha256. x402 $0.005 USDC, Base. As is, no warranty.

Unpaid x402 probe: status, latency, payment terms. x402 $0.005 USDC, Base. As is, no warranty.

Mock REST APIs, fake OAuth2/OIDC provider, uptime monitors + heartbeats, live badge/QR images

Which x402 endpoint to call: ranked by relevance, payers, recency, price. $0.005/call via x402

Generators for CSS gradients, animations, and web interaction effects

A

Agent Discovery Doctor - llms.txt, agent card, mcp.json

www.pathwren.workers.dev

{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key

M

Markdown Lane Check - llms.txt, .md twins, Accept: text/markdown

www.pathwren.workers.dev

Six checks: llms.txt, llms-full.txt, .md twins, Accept: text/markdown, sitemap.md, alt link. Free

M

MCP Endpoint Lint - handshake, tool schemas, JSON-RPC errors

www.pathwren.workers.dev

{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key

R

Robots.txt Policy Lint

www.pathwren.workers.dev

{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key

Surface contracts: API behavior evidence, x402 pre-payment check, MCP server preflight

Instant no-signup webhook and HTTP request inspector for testing webhooks and agent tool callbacks

robots.txt tester (RFC 9309), AI crawler access (GPTBot, ClaudeBot...) and sitemap check.

LaunchCheck site reports, screenshots, audits, TTS, translate, Base data, LLM chat; x402 per call

https JSON URL to tidy markdown. x402 $0.005 USDC, Base. As is, no warranty.

HTML string or https URL to markdown. x402 $0.005 USDC, Base. As is, no warranty.

https text to counts and sha256. x402 $0.005 USDC, Base. As is, no warranty.

Unpaid x402 probe: status, latency, payment terms. x402 $0.005 USDC, Base. As is, no warranty.

AI-operated. Two free DKIM readers, no signup: reads keys, finds the selector. Paid roster $99

AI-operated. Free previews: licence audit, page reads, endpoint checks. Paid full versions over x402

Lints whether a paid API's 402 response speaks the x402 protocol correctly.

Breaking changes between two npm, PyPI or GitHub Actions versions, from real release notes.

Search public agent questions and sourced findings, browse agents, and read the onboarding guide

Convert, lint and generate LLM tool schemas for OpenAI, Anthropic, Gemini and MCP

Paid APIs for agents (x402 index) + SEC filings, wallet risk, OFAC, EVM reads, agent memory, news

Remote MCP tools for pay-per-call email, domain, SEO and Swedish data utilities (x402)

Z

zerm

zerm.dev

Agent utility belt: memory, locks, webhook inboxes, timers, DNS, email, URL, timezone, cron

597 motion/3D UI patterns as ready HTML/CSS/JS, served over MCP. The entire library is free.

T

Testmode AI

amber.digital

Write, run and check natural-language browser tests of your web app from your AI assistant

Q

QACAT

dimawin22

Translation QA: automated checks, AI evaluation, linguistic review, and visual in-context testing

Search DevRel tools, communities, jobs, events, CFPs, and guides from devrel.directory

Search pwa.directory, submit a progressive web app, and get a payment link a human pays

Operation-level risk guidance for consolidated MCP tools, including schema drift and retry signals

Look up and search 7,300+ ServiceNow system properties (sys_properties) explained in plain English.

Discover Drawcall workflows for 3D apps and asset creation; read APIs and approve CLI logins

R

Relin

earonesty

Send and receive webhooks, manage customer endpoints, and inspect and retry deliveries

E

Earth LinC

earthlinc.earth

Compose a finished, hosted web page from a brief, then read it back and refine it

L

LogsLoom

efim23

Ingest and search LogsLoom logs from coding agents.

D

Digche Icons

Elinaseri

Find semantic Digche replacements for functional UI icons and retrieve the selected SVG style

F

fixture.email — Email Testing for Agents

fixture.email

Disposable test mailboxes on a real domain: send, receive and assert on real email.

E

Emuluxe

Emuluxe

Launch and verify high-fidelity mobile simulations from an AI agent

E

Enpitech

enpitech

AgentReady website scans for AI agents, AI Hub search, newsletter and contact, from Enpitech

Pay-per-call data tools via x402: Spanish/EU open data, extraction, URL to Markdown, CSV to JSON.

M

Maps by DeltaBreen

deltabreen.eu

Put a map on a site with your AI: map your places, design the look, and get the code

R

Reqlio

reqlio.eu

Read and edit requirements, traces, verification, risks and reviews in a Reqlio workspace