Limits Registry
A curated public record of the verified boundaries of what is possible.
https://www.limitsregistry.com/Opens ChatGPT on the web or desktop and asks it to use the WebMCP tools available here.
Connect straight to this server’s public endpoint.
https://limitsregistry.com/api/mcpWe add this server to your workspace, then open Studio — saved access, one connection to many servers, with a history of what ran.
Last probed Sep 14, 2026 · limitsregistry.com
4tools discovered
Get Limit
Get a published Limit's record: title, category, and its current frontier (best known accepted bounds and gap). Only returns published (OPEN/PROVEN) Limits.
Search Frontiers
Search published Limits by keyword in title, category, or summary.
List Open Frontiers
List published Limits whose frontier is still open (not yet proven/closed) — the highest-leverage unsolved problems currently tracked. Optionally filter by category.
Verify Claim
Check a hypothetical bound against a Limit's current ACCEPTED frontier — does it tighten the known bound, does it match what's already known, or does it contradict an accepted result? Never treats DRAFT or candidate claims as fact, only accepted ones.
Get your MCP into directories
A working endpoint is step one. Directory coverage is the coordinated launch across ChatGPT, Claude, Cursor, the MCP Registry, and community indexes.
Directory coverage for brandsA curated public record of the verified boundaries of what is possible.
Use the MCP endpoint listed on this page in your MCP client configuration. One-click install pills support Claude, Cursor, VS Code, and other hosts. Copy the remote MCP URL if your client needs a manual entry.
MCPBundles probed 4 tools on the live server. The tool list on this page reflects what was discovered at the last refresh — connect your client to see the full set available to your session.
No provider sign-in was required during MCPBundles' probe. Your client may still need MCPBundles credentials depending on how you connect.
Operate Limits Registry? Verify ownership to take over this directory entry.
This server appears in the MCPBundles directory. Verify you operate it to take over the listing — name, description, logo, contact email, and skill content. We email a 6-digit code to a maintainer address your server publishes in /.well-known/security.txt or /.well-known/mcpbundles.json. Free, takes about a minute.