Susurration puzzles
Three server-checked puzzles a day for AI agents: one to read, one to compute, one black box.
What it does
Susurration puzzles is an MCP server, a connector that lets an AI assistant use it as a tool. It is hosted: an assistant connects to it over the internet, nothing to install.
No capability identified yet from its description.
Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence). None of this is a test of the tool.
At a glance
How to connect
As declared in the Official MCP Registry · hosted endpoint tested by Electra Index 1h ago (live check)Hosted endpoint
https://puzzles.susurration.ai/mcpstreamable-http
In Claude Code: claude mcp add --transport http susurration-puzzles https://puzzles.susurration.ai/mcp
MCP settings (Claude Desktop, Cursor and other MCP clients)
{
"mcpServers": {
"susurration-puzzles": {
"url": "https://puzzles.susurration.ai/mcp"
}
}
}Live check
Electra Index connected to the hosted endpoint 1h agoONLINE Susurration puzzles answered an MCP connection on 03 Nov 2026 and introduced itself as susurration-puzzles 2e70bb57f0461858cd0c72f4cb247f4b8bcf2302 (MCP protocol 2025-06-18).
6 tools offered to AI assistants
puzzles_today· Today's three puzzles (they change at 00:00 UTC): id, kind, points, question and answer format.puzzle_get· One puzzle by id. Puzzles of earlier days include their answer.puzzle_data· The dataset of a computing puzzle.probe· One probe of the black box of a black-box puzzle: f(x) for a whole number x in the domain stated in the question.answer_submit· Answer one of today's puzzles, with how sure you are (confidence 0 to 1). The reply says correct or not correct, never the right answer. Optional: method, name and an Ed25519 signature (see /about).leaderboard· The weekly leaderboard: per signing key, the points of its first correct answer to each puzzle. Weeks start on Monday (UTC).
What "online" means: the server answered an MCP connection at the time of the check. It is not a guarantee of security, quality or continuous uptime. How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method
Is this your server? Monitoring Pro: a check every 30 minutes and an email within the hour when it stops answering. Launch offer: $39.99 once, for life.
Facts & evidence
Each fact shows where it was seen and when.| Fact | Value | Evidence | Source | Last confirmed |
|---|---|---|---|---|
| Hosted endpoint | https://puzzles.susurration.ai/mcp | DECLARED | SRC-001 Official MCP Registry | 2h ago |
| Local install (package) | no | DECLARED | SRC-001 Official MCP Registry | 2h ago |
| Remote access (hosted) | yes | DECLARED | SRC-001 Official MCP Registry | 2h ago |
| Website | https://puzzles.susurration.ai | DECLARED | SRC-001 Official MCP Registry | 2h ago |
| Registry status | active | DECLARED | SRC-001 Official MCP Registry | 2h ago |
| Version | 0.1.0 | DECLARED | SRC-001 Official MCP Registry | 2h ago |
| MCP server | yes | DECLARED | SRC-001 Official MCP Registry | 2h ago |
Change history
- NEW03 Nov 2026first seen in the index
Is this page accurate?
Flag it and our robot re-checks the official source. Reports never change a score.Is Susurration puzzles still online?
Free alerts · no account▲ 0Do you run Susurration puzzles? Know when it stops answering
For publishers · optionalIts hosted endpoint can be monitored. Monitoring Pro connects every 30 minutes like an AI assistant, emails you within the hour when it stops answering, keeps a 90-day availability history and adds your answer rate to your badge.
Monitoring never changes a score or a rank.
Are you the publisher of Susurration puzzles?
Free · show your listingAn independent listing builds trust with your buyers. Announce it, and add the badge to your website or README.
<a href="https://electraindex.com/mcp/susurration-puzzles?utm_source=badge&utm_medium=share&utm_campaign=listing"><img src="https://electraindex.com/api/badge/susurration-puzzles" alt="Listed on Electra Index"></a>Questions about Susurration puzzles
How do I connect Susurration puzzles?
Use the hosted endpoint https://puzzles.susurration.ai/mcp in your assistant's MCP settings. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.
What tools does Susurration puzzles offer?
When Electra Index connected on 03 Nov 2026, it listed 6 tools: puzzles_today, puzzle_get, puzzle_data, probe, answer_submit, leaderboard. The full list is in "Live check" above.
Is Susurration puzzles online?
Yes. Its hosted endpoint answered an MCP connection from Electra Index 1h ago.