MCP Servers

An MCP server that provides a hello tool

An MCP server that provides a hello tool

Manage Rivet Cloud namespaces and actors, run Code Mode, and open the Rivet Actor Inspector

Search remote Model Context Protocol servers and tools discovered by BuiltWith, without an API key

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Routebase

routebase.dev

Design, mock, test, document and monitor your APIs from one living OpenAPI spec

Ask runboth.dev in plain language: what RunBoth does, how to install it, and its limits

Drop-in read-only replicas of GitHub, Jira, Slack and 22 more, preloaded with one fake company.

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Priority — TypeScript Compiler Intelligence

semanticreader.dev

Stateless TS/JS compiler facts for agents: references, imports, impact. No repo index or OAuth

Persistent cloud workspaces for AI agents: run commands, edit files, use git and a browser

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Sinatra

sinatra.dev

Hosted coding agent: start, follow up on and stop tasks that can open GitHub pull requests.

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Site no Ar

sitenoar.dev

Create, edit and publish websites and web apps through your AI agent, with your own domain

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snapcn

snapcn.dev

Search hand-tuned Remotion components, read their props, and plan a video from a one-line brief

Read-only web QA agent: scans a site in a real browser and returns evidence-backed findings

Test whether 3D assets survive Apple Quick Look and Safari <model>, then fix what fails

Find and compare sports odds and data APIs, and read the SportsAPIs.dev review of each one.

Search and download free CC0 2D sprite sheets and tilesets for games

Neutral, sourced, dated facts for choosing software: price, free tier, idle rules, security record

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StateLode

statelode.dev

Shared task layer for AI coding agents. One MCP surface: task_search, task_get, task_mutate

Manage Static Forms (staticforms.dev) form endpoints, rules, and submissions over OAuth.

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stepcode

stepcode.dev

Read-only MCP access to stepcode.dev's how-to corpus: analysis pages by tool

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SwiftSkills

swiftskills.dev

Search a curated catalog of agent skills, MCP servers and rules for Swift, SwiftUI, Xcode and iOS

Tada: automated QA for AI-written code

x402 endpoint and MCP server index: find paid APIs for agents, x402 checks and price benchmarks.

Text tools: stats, language, case, lines, replace, extract, keywords, summary, sentiment, diff.

Cloud GPU prices per hour, plus developer helpers: hash, HMAC, JWT, IDs, JSON, cron, time zones.

Message someone through your coding agent. Their agent gets your note and explains it.

30-day x402 history, calendar, DNS, RDAP, LEI, URLs, scraping, text, VAT, QR. Pay-per-call USDC.

Checks whether a web page is ready for AI agents and whether an MCP server meets directory rules

App hosting your agent runs: git, deploys, staging/production, Postgres. Owner approves risky steps.

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UpFork

upfork.dev

Search, view and install React + Tailwind CSS components and landing pages from UpFork

Developer utility MCP: screenshots, PDFs, OG, QR, link preview, JSON validate, ShipPack

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Volato Errors

volato.dev

Read-only production error evidence for coding agents investigating failures

Launch check for AI-built apps: SAFE or DO NOT SHIP verdict, with evidence and paste-back fixes

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Whenever

whenever.dev

Write, validate, deploy and run TypeScript workflow automations on Whenever from your coding agent

Signed API declarations for agent handoffs. Free demo and verification; receipts cost 0.002 USDC.

Public webhook relay with signed observations, retries and verified receivers. Self-service.

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Leafmelt

cybermax.cybermax-tools.workers.dev

Convert PDF, Word, Excel and HTML to clean Markdown for LLMs and RAG. Keys $19/mo; 50 free calls a day

Email, DNS, SPF/DMARC, site contacts, Markdown, IBAN, Swedish validators. Pay per call (x402).

Swedish personnummer/orgnr/bankgiro/OCR validation, kontonummer to IBAN, bankdagar.

Deterministic web intake and data utilities for autonomous agents

x402 agent tools: invoice/PDF extract, OCR, email risk, web to markdown, domain, FX, time

ProofRun: bounded HTTP acceptance checks for agent deployments. $0.01 USDC per pack

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textkit (paid)

textkit.johnaio281.workers.dev

Text and Unicode utilities for agents: homoglyphs, scripts, slugify, entropy, dates. Paid via x402

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WebRef (paid)

webref.johnaio281.workers.dev

Web standards and time reference for agents: HTTP codes, retries, deadlines. Paid via x402

AI-agent-run devtools: package install risk, stack EOL/CVE checks, scored OSS bounties

Verify an agent's advertised route, price, payment details, and schemas against its live endpoint

Offline check-digit validation for IBAN, BIC, EU VAT, GTIN/EAN/UPC and ISBN. Format check only.

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ContrastKit

contrastkit.mike-tusa.workers.dev

WCAG color contrast checks, nearest accessible color, CSS color conversion and palette pair checks.

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CronSpell

cronspell.mike-tusa.workers.dev

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

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DomainAge

domainage.mike-tusa.workers.dev

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

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GlyphGuard

glyphguard.mike-tusa.workers.dev

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

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HrefGate

hrefgate.mike-tusa.workers.dev

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

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JsonMend

jsonmend.mike-tusa.workers.dev

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

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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.

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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.

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SemverKit

semverkit.mike-tusa.workers.dev

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

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ToolGrade

toolgrade.mike-tusa.workers.dev

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