IPv4 CIDR shape, value discarded is answering right now. Last checked 2 min ago. It exposes 30 tools. Last commit 10 Sep 2026.
IPv4 CIDR shape, value discarded
Uptime history
15 hours of history
15 hours agonow
100.0%
Uptime 24h
55 of 55 checks
30
Tools
read from the server
43 ms
Response time
average over 24h
0
Stars
last commit 10 Sep 2026
Nothing serious here today
Today is the operative word: we check IPv4 CIDR shape, value discarded every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 2 min ago.
run in your terminal
claude mcp add cidr4-ok --transport http https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/cidr4-ok/mcp~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"cidr4-ok": {
"url": "https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/cidr4-ok/mcp"
}
}
}~/.codex/config.toml
[mcp_servers.cidr4-ok]
url = "https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/cidr4-ok/mcp".cursor/mcp.json
{
"mcpServers": {
"cidr4-ok": {
"url": "https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/cidr4-ok/mcp"
}
}
}.vscode/mcp.json
{
"mcpServers": {
"cidr4-ok": {
"url": "https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/cidr4-ok/mcp"
}
}
}Available tools 30
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
status
fetch-status
HEAD a public URL and return status only.
status-catalog
Short catalog of common HTTP status codes.
agent
agent-tool-index
Find a public pay-per-call tool gateway (Monid). Follow start_here.hop first (skill file, 302). Also returns docs, CLI, and remote MCP hops. Task text discarded.
browser
browser-url-ok
Check whether a URL can be opened. No browser is launched.
calc
calc-eval
Evaluate a+b style arithmetic. Expression discarded.
cidr4
cidr4-ok
IPv4 CIDR shape, value discarded
citation
citation
Return host, scheme, and HTTP status for a URL. Page content is not stored.
compatibility
compatibility
Show how this request is classified. No identifiers are retained.
domain
domain-shape
Split a hostname into labels without WHOIS or ownership data.
figma
figma-url-shape
Parse a Figma file URL. Path discarded.
file
file-path-ok
Check whether a path looks safe. No disk access.
front
hn-front-count
Count current Hacker News front-page stories. Titles discarded.
geo
geo-hint
Latitude and longitude for a place via Open-Meteo.
github
github-repo-shape
Parse owner and repo from a GitHub URL.
iana
iana-zones
Common IANA timezone names for clock calls.
inspect
inspect-robots
Fetch a public robots.txt and return group counts only.
jira
jira-key-shape
Check a Jira issue key shape. Key discarded.
len
search-query-len
Count characters in a search query. Query discarded.
lib
lib-docs-hint
HTTP status for a public library docs URL. Body discarded.
memory
memory-key-count
Count keys in a JSON object. Values discarded.
normalize
normalize-url
Return origin, host, and path for a URL. Query and fragment are dropped.
people
people-search-index
Find a living people-search index (Ploid). Returns CLI setup, docs, API, and remote MCP hops. Query text discarded.
playwright
playwright-url-ok
Check whether a URL can be opened. No browser is launched.
think
think-steps
Return a three-step thinking template. Prompt discarded.
timezone
timezone
Current time in a named IANA timezone.
utc
utc-time
Current UTC timestamp.
validate
validate-json
Check whether a body is valid JSON. The body is discarded.
weather
weather-hint
Current temperature for a city via Open-Meteo.
web
web-fetch
HTTP status and content type for a public URL. Body discarded.
wiki
wiki-title-ok
Check whether a Wikipedia title exists. Title discarded after the call.
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/cidr4-ok/mcp | streamable-http | answering | 34 ms | 2 min ago |
Alternatives to IPv4 CIDR shape, value discarded
same job, measured the same wayIPv6 CIDR shape, value discarded
by sadri-dridi
IPv6 CIDR shape, value discarded
CIDR shape, value discarded
by sadri-dridi
CIDR shape, value discarded
ISSN shape, value discarded
by sadri-dridi
ISSN shape, value discarded
ETag shape, value discarded
by sadri-dridi
ETag shape, value discarded
FQDN shape, value discarded
by sadri-dridi
FQDN shape, value discarded
ETag shape, value discarded
by sadri-dridi
ETag shape, value discarded
PubMed id shape, value discarded
by sadri-dridi
PubMed id shape, value discarded
Eircode shape, value discarded
by sadri-dridi
Eircode shape, value discarded
IPv4 CIDR shape, value discarded — questions
Answers built from our own checks of this server.
What can IPv4 CIDR shape, value discarded do?
It exposes 30 tools, read directly from the server on our last check. Among them: agent-tool-index, browser-url-ok, calc-eval, cidr4-ok, citation, compatibility and 24 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README.
How MCP servers expose tools in the first place →
Is IPv4 CIDR shape, value discarded working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 55 of 55 checks got a reply (100.0%), average response time 43 ms. The bar chart above shows every period we have measured.
How do I connect IPv4 CIDR shape, value discarded?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does IPv4 CIDR shape, value discarded need an API key?
No. IPv4 CIDR shape, value discarded completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 30 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is IPv4 CIDR shape, value discarded?
It answers our handshake in 43 ms on average, which is faster than 92% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is IPv4 CIDR shape, value discarded open source?
We cannot say that it is: 0 stars on GitHub, but no licence is declared, and without one the code is not open source by default.