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Pre-send EVM address checks: free pre-check, $0.01 check, $0.05 deep scan. x402: payment is auth.

Check any IP for VPNs, proxies, Tor, and fraud risk — free tier, no key needed to try

Extract structured Google & Bing results — organic, ads, featured snippets, PAA, related searches. Keyword research and rank checking. Free alternative to SerpApi. No API keys required.

Shared, serverless, conflict-free memory for AI agents — a multi-machine drop-in for the MCP memory knowledge graph.

Carrier detection, tracking URLs, shipping estimates, and customs calculator for AI agents. 6 tools, free, no API key.

Monitor any public Shopify store: free snapshot, paid change intelligence and reports via x402.

Give AI agents the ability to screenshot web pages and render HTML. Free tier 100+100/month, no signup needed. Remote streamable-http connection.

Capture web pages as PNG, JPEG or WebP, render a URL or HTML to PDF, and generate 1200x630 OG images. REST API and remote MCP server. Free tier.

Search photographs free; buy full-resolution originals with USDC over HTTP 402.

MCP server that generates SQL queries from natural language for web3 social data. Works with Claude Desktop, Cursor, and Windsurf. Free tier: 500 queries/day.

Graded trading signals & market analysis (FX, crypto, sports, prediction markets) with a public machine-graded track record. Free track-record tools; pay per call with x402 USDC or credit packs.

Your saved email signature for emails AI assistants send: get it as HTML and text with your real contact details, make a free signature, and manage a company's people.

Send PDFs for legally binding e-signature, free and unlimited: emailed signing links, status tracking, and free legal templates (NDA, lease, and more).

14 portfolio-aware finance tools for Claude, Cursor, and Windsurf: portfolio analysis, news impact, tax harvesting, earnings, and benchmarks. Analysis only, never executes trades. Not licensed financial advice. Free API key (50 credits/month).

iOS simulator automation MCP server — build, test, screenshot (20ms), UI interaction, logging, git. Direct WDA integration, no Appium overhead. 55 tools, Free + Pro tier.

Who's buying NVIDIA? What did the CEO just sell? Which chipmakers are growing fastest? Ask, and get the answer straight from SEC filings, every number linked to its source. 220 AI & chip stocks. Free, no API key.

Singularis is unlimited computation. Bring us your hardest problems. MCP server; free agent key: 500 credits instantly.

PageSpeed, WHOIS, DNS, SSL checks, and site health analysis for AI agents. 6 tools, free, no API key.

Instant website audits: SEO, speed, security headers, SSL, mobile and broken links. Free web scan; pay-per-call MCP tools for agents.

Check which AI crawlers a site allows and see pages the way AI crawlers do. SEO & AEO & GEO. Free, read-only.

Hosted remote MCP server for uptime monitoring, incidents, logs, metrics and traces. OAuth or scoped API key, included on every plan including free.

Check public pages for SEO tags, AI crawler rules in robots.txt, AI citation signals and landing page conversion. Free, hosted, no API key.

Floor plans, elevations and sections for agents. Draw a room in real millimetres, place doors, windows and tables, validate with typed errors, render deterministic SVG. Free key, no approval.

Ad-free, betting-free live football scores, fixtures, standings and verified match reports.

16 free privacy-first tools for AI agents — no API key, no signup, 60 req/min free. Description: Skuuy MCP Server gives AI agents 16 free privacy-first tools: egress IP + geo/ASN intel, disposable temp mail with OTP extraction, TOTP generation, DNS resolution + propagation matrix, port checks, security header audits, URL-to-clean-markdown for LLMs, webhook bins, hash/encode utilities, public API search, ephemeral file drop + paste, and a read-only EVM JSON-RPC relay (12 chains). Available as hosted remote endpoint and via npx. MIT licensed, actively maintained.

Search live private jet empty legs, get charter estimates and booking links. Free, no API key.

A chart MCP server that renders locally, with no browser. Agents send small JSON specs and get PNG/SVG charts and dashboards. 47 types plus scientific plots: Kaplan–Meier, volcano, Bland–Altman, Q–Q, error bars and log axes. The same spec always gives the same bytes. Free local use, AGPL-3.0.

Connect your AI to SnakeIn projects and work calls over MCP. Read meeting context, transcripts, decisions and tasks using a token you issue and revoke. macOS/Windows app; free starter credits, then prepaid credits without a subscription. Submitted by the creator.

SnapInsta – Fast & Free Instagram Photo, Video, Reels and Stories Downloader

Persistent state for AI agent workflows. Save, resume, and replay multi-step workflows across sessions, crashes, and agent handoffs. Free tier included.