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MCP endpoint :https://aitext.openkrill.app/mcp · website · measurements and detailsSix checks: llms.txt, llms-full.txt, .md twins, Accept: text/markdown, sitemap.md, alt link. Free.
MCP endpoint :https://www.pathwren.workers.dev/c/mcp-registry-official/mcp/markdown · website · measurements and detailsExact character/word counting, reversal, palindrome checks, indexing, sorting; Unicode-safe.
MCP endpoint :https://apished.com/mcp/v1/text · website · measurements and detailsCheck whether text is valid JSON. The body is discarded.
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/json-check/mcp · website · measurements and detailsAI-powered scam detection for suspicious texts, emails, and screenshots. US-focused.
MCP endpoint :https://web-production-970ba.up.railway.app/mcp · measurements and detailsFree Japanese article checker for claims, duplicate text, PR disclosure, and basic quality.
MCP endpoint :https://jp-article-check-free.9gbnk9sztm.workers.dev/mcp · measurements and detailsSEO audit (400 checks), text readability and grammar check, PDF to images, image conversion.
MCP endpoint :https://mcp.app-kit.dev/mcp · website · measurements and detailsCheck a document for hidden text before your agent reads it. PDF, Office, RTF, HTML.
MCP endpoint :https://api.hiddencontent.ai/v1/mcp · website · measurements and detailsGenerate original images from text; prompts and results are content-checked. Paid per image, x402.
MCP endpoint :https://kimage.kaneky.dev/mcp · website · measurements and detailsCheck your WhatsApp numbers, connection status and webhooks, and send a text when you confirm.
MCP endpoint :https://mcp.wapiworld.com/mcp · website · measurements and detailsGenerate favicons (ICO, SVG, Apple touch, PWA, manifest) from SVG, text or emoji; check any site.
MCP endpoint :https://favicon.zip/mcp · website · measurements and details49 free agent tools: WHOIS, PDF to text, email checks, FX rates, X12 EDI, JSON repair. No API key.
MCP endpoint :https://fluentedi.com/mcp · website · measurements and details2,029 DISA STIG rules with official check/fix text, CCI mappings, and .ckl checklist export.
MCP endpoint :https://www.mactechsolutionsllc.com/api/mcp/stig · website · measurements and detailsIs this number safe to call or text right now? Live carrier, CNAM, spam and SMS checks for agents.
MCP endpoint :https://verirouteintel.com/api/mcp · website · measurements and detailsKurdish-first AI tools: translation (250+ languages), spell check, grammar, speech-to-text and TTS.
MCP endpoint :https://api.mazdek.ai/api/mcp · website · measurements and detailsPay-per-call web page tools for agents (meta, text, links, change check). USDC on Base via x402.
MCP endpoint :https://scrooge-x402-tool-mill.vercel.app/mcp · website · measurements and detailsPDF text by page with hashes. 0.005 USDC/Base via x402. No OCR. Check /health for readiness.
MCP endpoint :https://pageproof.alert-crab-1890.chatgpt.site/api/mcp · website · measurements and detailsX4: Foundations scripts: checks, schema elements, expression types, scripts, cues and texts.
Package npm :x4-script-mcp · website · measurements and detailsTranslation Ai automation via MCP. Includes translate text, detect language, check grammar. By MEOK
Package pypi :translation-ai-mcp · website · measurements and detailsOutside-in validation gate for AI-generated text; a separate model checks LLM output, fail-closed.
Package npm :@soulfield/lens-mcp · website · measurements and detailsAI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt
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