"Free Network Graph Visualization Tools (No Account Required)" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
MCP-native AI browser testing for coding agents. Submit a URL + goal, get back action trail, bugs, screenshots, and WebM video your agent patches from directly. 43 tools, 12 AI evaluation personalities, combo tiers with auto-pause-on-bugs, throwaway email + SMS inboxes.
Check an A2A agent before you delegate, or an MCP server's measured conduct. Free, no key.
Free MCP server that audits any public URL: technical SEO, Core Web Vitals, indexing checks.
Lint a SKILL.md for frontmatter, structure, secrets and size. All 6 tools free.
Read the verification code (OTP) and test emails your app sends to a catch-all test hostname. Four read-only tools: list_domains, get_latest_otp, list_messages, get_message. Needs a MailBots API key from the 14-day free trial (no card, no DNS) or a paid plan. Setup: https://mailbots.top/docs/mcp
Risk-scan a diff, flag AI-generated-code tells, find secrets. 5 of 7 tools need no account.
Build, check and report on MIDAS CIVIL NX bridge models and design tendons, with MIDAS IT plugins.
Free website tracking audit, no account needed: GTM, GA4, Meta Pixel, Consent Mode v2, server-side
AI jobs, contracts, execution proof, translation and data quality over MCP + x402 USDC on Base.
Screwtape.ai decides whether an AI agent is allowed to spend money, and keeps the proof. Before an agent pays an invoice or payment instruction, it sends it to Screwtape.ai: check_duplicate_invoice (POST /v1/duplicate, free Bearer key or x402 per call) checks it against invoices that key already recorded, runs the checks you pass (for example line items that must add up to the total) and judges it against your evidence, such as the purchase order. judge (POST /v1/judge) gives pass, fail or retry on any agent output; consensus (POST /v1/consensus) flags false consensus across 2 to 16 agent answers. Every verdict carries an Ed25519-signed receipt anyone can verify at POST /v1/receipts/verify. judge and consensus can be paid per call with x402 ($0.005 USDC on Base or Solana, no account); a free key gives 10 calls per UTC day.
Free SEO, AI visibility (AI crawlers, llms.txt, JSON-LD) and security-header checks for any URL.
Check WCAG color contrast, fix failing colors, build 50-950 palettes. No account.
Free AI visibility check: can AI crawlers read a site, and do ChatGPT, Gemini, Perplexity cite it?
Visual regression testing over MCP: upload screenshots, review diffs, approve. No CI needed.
Free compare_page_observations for two held JSON pages. No fetch, wallet, or payment.
JSON healing, O(n) ReDoS defense, XML prompt compilation, and schema verification tools.
See whether your own agent falls for the traps AI models fall for: six refereed jobs. No account.
Country verification research, integration planning and synthetic tests. No live identity checks.
See which AI models fall for traps in everyday jobs, and check or scan any MCP server, skill or package before your agent installs it. No sign-in; read-only; returns structured data.
EU cookie-consent & tracker audit, run like a real first-time visitor (EU proxies). Free quick check, no account. Finds trackers and tracking cookies before consent, missing first-layer Reject, what still fires after Reject, Google Consent Mode v2 state per signal, plus Google Fonts/YouTube/Maps/reCAPTCHA. Every finding comes with the exact request as evidence and a concrete fix, in 13 languages. Weekly monitoring, white-label PDF for agencies, private share links. Works with any CMP (Cookiebot, Usercentrics, Complianz, CookieYes, Borlabs…).
Jam recordings (video, console, network) as context and proof of work for your coding agent.
Check public web pages for common WCAG 2.2 accessibility issues from your MCP client. The free scan_url tool needs no account and returns a score, severity breakdown, WCAG references, affected elements and fix guidance. Automated checks do not establish conformance; manual review is still required. Optional authenticated tools support monitoring your own sites. Documentation: https://allyproof.com/docs/mcp
12 free MCP tools for local validation of emails, URLs, IP addresses, IBANs, dates, UUIDs, JSON and other structured inputs. No API key or external verification service required.
Prompt-injection scanner for agents: risk score, categories and spans for text, pages, MCP tools
Cloud Android 14 phones that Claude, Claude Code, Cursor and Codex can use over MCP. Ready in ~15 s. Plain-English tasks return pass/fail, steps, screenshots and video. 1¢ per phone-minute, AI included, 100 free minutes a month.
Run, debug, and triage tests from your IDE using natural language, no dashboard switching, no manual data transfers. The TestMu AI (formerly LambdaTest) MCP Server is a single remote server exposing four tool suites: HyperExecute — analyze your project, generate YAML configs and test runner commands, then monitor jobs and sessions. Automation — pull a TestID's details plus command, network, and console logs into one chat for instant root-cause analysis. Includes mobile app upload. SmartUI — explain pixel, layout, DOM, and perceptual changes in a visual regression run, with context-aware React/HTML/CSS fixes. Accessibility — audit any public URL or a local React app against WCAG and get ready-to-apply remediation steps. Connects over https://mcp.lambdatest.com/mcp using OAuth 2.1 — no API keys in your config. One-click install in Cursor; works with Claude, GitHub Copilot, Cline, and any MCP client. Tests execute on the TestMu AI cloud: 3,000+ browsers and 10,000+ real devices.
Check an online store's product catalog before you import it or send it to a shopping feed.
7 free MCP tools for optimizing HTML, JavaScript, CSS, JSON, CSV, prompts and terminal text. Lightweight, local transformations designed for AI agents and developer workflows.
Independent static checks for supported tag and alarm CSV import formats; no HMI or PLC access.
13 free MCP tools for generating synthetic test data, mock identities, color palettes, SVG avatars, placeholder text, slugs, hashes and random tokens. Built for AI agents, prototyping and software testing.
15 deterministic AI agent and developer tools for code context pruning, token budgeting, hybrid search reranking, self-healing patches, AST analysis, circular dependency detection, root-cause isolation, schema compilation, math/financial solving, critical-path scheduling, A/B testing, memory diffs, API compatibility checks, boundary test generation, and Monte Carlo risk simulation.
32 free MCP tools for data validation, text optimization, and synthetic test data.
Official Mifori Agent Trust Protocol. Performs real-time latency, JSON schema compliance, and synthetic IQ audits on target AI bots using x402 USDC micro-payments on Base network before high-value tool execution.
Check one web page for broken links, redirect chains hop by hop and mixed content. Free, no key.
Audit, pin and diff agent tool lists; preflight and watch remote MCP servers. Free tier; x402.
Connect Claude, ChatGPT, Cursor or any MCP client to Ybug. Read bug reports with screenshots, console logs and network requests, then triage them in chat.
Live AI agent trust oracle: audit synthetic IQ, latency & JSON compliance via x402 or free tokens.
Validate JSON-LD structured data against the Schema.org vocabulary. Free; never fetches URLs.
Security scans for AI-built web apps, starting with Lovable. Verify ownership, run authorized scans, inspect findings, get AI-ready fix prompts and request retests. Uses OAuth with a Guarita account. Fix prompt access follows the account plan.
32 free MCP tools for data validation, text optimization, and synthetic test data.
