Explore
Evidence for your next connection.
Independent measurements of remote MCP servers. Every observation has a timestamp.
Read-only probesFind a server for your workflow, with connection evidence you can inspect.
usespur.comVerified
Real estate leads, skip tracing, direct mail, SMS & email outreach, and marketing automations
Real Estate & PropertyCommunication & messaging
Median latency 636 ms · Last checked
Email security and AI discoverability scores for any domain, with the exact record or tag to fix.
ProductivityCommunication & messaging
Median latency 660 ms · Last checked
radmail.aiVerified
Email OS for agents - real-inbox search, triage, commitments, and a verifiable BEC hard-stop.
ProductivityCommunication & messaging
Median latency 662 ms · Last checked
Discover, compare and buy social media growth (Instagram, TikTok, YouTube, Telegram, X); x402 ready
Marketing & SalesCommunication & messaging
Median latency 674 ms · Last checked
Read-only deliverability + strategy: free cold email checks, list tools, inbox planning, research.
ProductivityCommunication & messaging
Median latency 687 ms · Last checked
synoptic.comVerified
Follow live feeds from Twitter/X, Telegram, press releases, SEC filings and more; publish your own.
OtherCommunication & messaging
Median latency 698 ms · Last checked
tenpace-appVerified
Human-authenticated setup for routing GitHub pull requests into the right Slack channel.
Developer ToolsCommunication & messaging
Median latency 720 ms · Last checked
Free email checks: 24 blacklists, spoofing grade, redirects, spam test, WHOIS, BIMI, AI readiness.
ProductivityCommunication & messaging
Median latency 767 ms · Last checked
DealMachineVerified
Find US property owners, including LLCs, plus owner phones and emails. Needs a DealMachine account.
Developer ToolsCommunication & messaging
Median latency 800 ms · Last checked
Written term sheets for 1–4 unit DSCR investment property loans, by email. Business-purpose only.
ProductivityCommunication & messaging
Median latency 837 ms · Last checked
rateranger.ioVerified
Watch a hotel's price after your user booked it, and email them when it drops enough to rebook.
TravelCommunication & messaging
Median latency 929 ms · Last checked
Johnson Bros. Plumbing: check coverage, services, pricing, availability, and book by SMS.
ProductivityCommunication & messaging
Median latency 993 ms · Last checked
Turn an email, notes or a flyer into a free sign-up sheet with reminders and waitlists.
ProductivityCommunication & messaging
Median latency 1005 ms · Last checked
Passive checks of a public website: email authentication (SPF, DKIM, DMARC) and basic security.
ProductivityCommunication & messaging
Median latency 1090 ms · Last checked
LinkedIn, Slack and GitHub profile photo specs, headshot style guides and a free headshot audit.
MediaCommunication & messaging
Median latency 1114 ms · Last checked
Written fix-and-flip term sheets for 1–4 unit investment purchases, by email. Business-purpose only.
ProductivityCommunication & messaging
Median latency 1129 ms · Last checked
Printed greeting cards: find designs with your message inside, then order on our site.
OtherCommunication & messaging
Median latency 1381 ms · Last checked
Every PostgreSQL mailing list since 1991, linked to the commits, code, commitfest and docs.
Developer ToolsCommunication & messaging
Median latency 2228 ms · Last checked
Find and call the right MSG91 API for SMS, OTP, WhatsApp, Email and Voice.
ProductivityCommunication & messaging
Median latency 2814 ms · Last checked
shawmena-dotcomVerified
Fieldwright: web page to clean Markdown, metadata, JSON-LD, emails, phones.
Developer ToolsCommunication & messaging
Median latency 203 ms · Last checked
Validates domain email MX records and DNS status via Cloudflare DNS-over-HTTPS.
Developer ToolsCommunication & messaging
Median latency 53 ms · Last checked
DNS resolution, HTTP security headers, and SPF/DMARC email hygiene audits.
Developer ToolsCommunication & messaging
Median latency 62 ms · Last checked
pipeworx-ioVerified
XposedOrNot MCP — free breach-exposure lookup by email.
Developer ToolsCommunication & messaging
Median latency 101 ms · Last checked
pipeworx-ioVerified
LeadMagic MCP — wraps the LeadMagic B2B email-finder API (leadmagic.io)
Developer ToolsCommunication & messaging
Median latency 108 ms · Last checked
Automated measurements. Not a rating. Unmeasured checks are not failures. How to read the evidence