onthisday is answering right now. Last checked 12 min ago. It exposes 34 tools. Last commit 13 Sep 2026.
On This Day MCP — wraps byabbe.se/on-this-day (free, no auth)
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 8 August 2026. No other catalogue keeps this.
Today is the operative word: we check onthisday every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 12 min ago.
claude mcp add onthisday --transport http https://gateway.pipeworx.io/onthisday/mcp
{
"mcpServers": {
"onthisday": {
"url": "https://gateway.pipeworx.io/onthisday/mcp"
}
}
}
[mcp_servers.onthisday]
url = "https://gateway.pipeworx.io/onthisday/mcp"
{
"mcpServers": {
"onthisday": {
"url": "https://gateway.pipeworx.io/onthisday/mcp"
}
}
}
{
"mcpServers": {
"onthisday": {
"url": "https://gateway.pipeworx.io/onthisday/mcp"
}
}
}
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
polymarket_arbitrage
polymarket_edge_tracker
polymarket_edges
polymarket_fill_risk
polymarket_kalshi_spread
ask_pipeworx
ask_pipeworx_beta
ask_pipeworx_grounded
pipeworx_feedback
pipeworx_trending
recent_alerts
recent_changes
scan_competitor_ai_presence
scan_dependency
bet_research
get_births
compare_entities
get_deaths
deep_research
discover_tools
entity_profile
get_events
forget
generate_llms_txt
recall
remember
resolve_entity
subscribe
list_subscriptions
suggest_questions
unsubscribe
validate_claim
ai_visibility_check
search_within
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://gateway.pipeworx.io/onthisday/mcp | streamable-http | answering | 79 ms | 12 min ago |
Trivia MCP — wraps Open Trivia Database (free, no auth)
Disify MCP — wraps Disify API (free, no auth)
Tarot MCP — wraps tarotapi.dev (free, no auth)
Bible MCP — wraps the Bible API (free, no auth)
Dog CEO MCP — wraps Dog CEO's Dog API (free, no auth)
Math.js MCP — wraps the mathjs.org API (free, no auth)
Bored MCP — wraps Bored API (free, no auth)
SWAPI MCP — wraps the Star Wars API (swapi.dev, free, no auth)
Answers built from our own checks of this server.