`register`

63 servers reported a tool by this name when we called them. Names are chosen by whoever wrote the server, so two tools sharing a name do not have to do the same thing. We record what was reported, not what it does.

server	result when we called it	tools
b2bware-mcp https://mcp.b2bware.com/mcp	answers-mcp	163
BorealHost https://borealhost.ai/mcp/	answers-mcp	152
AgentRider https://agentrider.vercel.app/api/mcp	answers-mcp	63
CryptoData API https://cryptodata-api.datachain.workers.dev/mcp	answers-mcp	48
agentiq-mcp https://moltad.net/mcp	answers-mcp	40
com.mcpscores/agent-continuity https://mcpfax-continuity.bowling-anthony.workers.dev/mcp	answers-mcp	33
PowerSun https://powersun.vip/mcp	answers-mcp	27
lobex https://lobex.app/mcp	answers-mcp	26
sayba-platform https://mcp.sayba.com/mcp	answers-mcp	25
marketintell https://api.marketintell.ai/mcp	answers-mcp	17
a2awire https://a2awire.com/mcp/benchmarks/campaign-incrementality-audit-v1/http	answers-mcp	16
a2awire https://a2awire.com/mcp/benchmarks/catch-the-overpayment-v1/http	answers-mcp	16
a2awire https://a2awire.com/mcp/benchmarks/inventory-ledger-reconciliation-v1/http	answers-mcp	16
a2awire https://a2awire.com/mcp/benchmarks/predict-the-news/http	answers-mcp	16
a2awire https://a2awire.com/mcp/benchmarks/production-schedule-optimizer-v1/http	answers-mcp	16
a2awire https://a2awire.com/mcp/benchmarks/support-action-gate-v1/http	answers-mcp	16
a2awire https://a2awire.com/mcp/benchmarks/support-agent-trials/http	answers-mcp	16
a2awire https://a2awire.com/mcp/benchmarks/support-agent-trials-hard/http	answers-mcp	16
a2awire https://a2awire.com/mcp/benchmarks/vendor-clearance-audit-v1/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/techlaunchwatch-agent-tool-releases-tech-announcements-be9b9e/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/hfspaces-new-hugging-face-spaces-ai-app-demos-live-web-uis-29d93e/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/cisaalerts-cisa-cybersecurity-ics-advisories-55420c/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/cisa-known-exploited-vulnerabilities-kevwatch-aedaf3/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/cvewatch-cve-security-advisories-nvd-high-critical-9a16b6/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/ghsawatch-package-dependency-vulnerabilities-malicious-package-advisories-d21673/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/quakewatch-earthquake-alerts-usgs-m2-5-24h-b24d70/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/fdarecall-fda-recall-enforcement-database-food-drug-device-80d7f6/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/fedwatch-us-economic-releases-index-b53e71/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/hnfrontpage-hacker-news-front-page-live-ba8ea8/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/scinews-latest-science-news-breakthrough-headlines-45fb62/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/llmwatch-new-llm-releases-serving-availability-50d6f9/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/marinewatch-live-noaa-marine-buoy-observations-b6e91c/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/trialwatch-new-clinical-trials-medical-research-results-0f9d9f/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/huggingface-new-dataset-release-tracker-hfdatasets-47948f/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/new-mcp-server-directory-agent-tools-index-8f68ac/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/huggingface-new-model-release-tracker-hfmodelwatch-3fa69f/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/npmwatch-new-npm-package-releases-javascript-dependency-updates-9aad2b/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/pmnews-prediction-market-news-index-cbfb9d/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/producthuntwatch-new-product-hunt-launches-hourly-a96189/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/pypiwatch-new-pypi-package-releases-python-dependency-updates-dffb95/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/riverwatch-usgs-river-levels-stream-flow-gauges-dc094e/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/launchwatch-rocket-launch-schedule-index-b9d878/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/scibreak-new-research-papers-science-breakthroughs-5bc973/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/biopreprintwatch-new-life-science-preprints-biorxiv-medrxiv-77a31b/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/spaceweather-solar-geomagnetic-activity-index-632aa8/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/ghtrend-fast-growing-new-github-repositories-01390c/http	answers-mcp	16
a2awire https://a2awire.com/mcp/data/usweather-us-weather-alerts-nws-active-ca26b1/http	answers-mcp	16
naibul https://naibul.com/mcp	answers-mcp	16
Agentic Substrate https://agenticsubstrate.org/mcp	answers-mcp	15
bstorms https://bstorms.ai/mcp	answers-mcp	14
mtok.market https://mtok.market/mcp	answers-mcp	13
agent-native-ledger https://journalize.dev/mcp	answers-mcp	11
agent-tools https://agent-tools.cloud/mcp-discovery/	answers-mcp	11
a2awire https://a2awire.com/mcp/http	answers-mcp	10
a2awire https://a2awire.com/mcp/sse	answers-mcp	10
thebotique-sigil https://www.thebotique.ai/mcp	answers-mcp	8
zyla-api-hub https://mcp.zylalabs.com/mcp	answers-mcp	8
stigmer https://stigmer.network/mcp	answers-mcp	8
lettera https://api.lettera.dev/mcp	answers-mcp	7
bowmark https://api.bowmark.ai/mcp	answers-mcp	4
bowmark https://api.bowmark.ai/mcp?s=r	answers-mcp	4
bowmark https://api.bowmark.ai/mcp/registry	answers-mcp	4
knowngate https://mcp.knowngate.com	answers-mcp	4

63 of these answered an MCP handshake on the day we checked. That is not a promise the tool works, only that the server was running and told us the tool existed.