Isir MCP Server
dev.cz-agents/isir
answering
Isir is answering right now. Last checked 10 min ago. 181 installs a week from npm. It exposes 3 tools. Last commit 2 Aug 2026.
Czech insolvency register (ISIR) — active/historical insolvency & bankruptcy by IČO or person.
Installs per day
peak 51 · avg 16 · +22% w/w
a month agotoday
Uptime history
43 hours of history
43 hours agonow
100.0%
Uptime 24h
91 of 91 checks
3
Tools
read from the server
196 ms
Response time
average over 24h
181
Installs / week
npm and PyPI
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 10 min ago.
run in your terminal
claude mcp add isir --transport http https://isir.cz-agents.dev/mcp~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"isir": {
"url": "https://isir.cz-agents.dev/mcp"
}
}
}~/.codex/config.toml
[mcp_servers.isir]
url = "https://isir.cz-agents.dev/mcp".cursor/mcp.json
{
"mcpServers": {
"isir": {
"url": "https://isir.cz-agents.dev/mcp"
}
}
}.vscode/mcp.json
{
"mcpServers": {
"isir": {
"url": "https://isir.cz-agents.dev/mcp"
}
}
}Available tools 3
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
ico
check_ico_insolvency
Check whether a Czech company (by IČO) has any active insolvency proceeding in ISIR. Returns spisová značka, start date, and current phase if found. Returns "no record" if not (which is also informative).
person
search_person_insolvency
Search ISIR for an individual person (FO) by name and optional date of birth. Returns active insolvency proceedings (oddlužení / osobní bankrot). Used to screen statutory persons in KYC and DD workflows.
poll
poll_isir_events
Pull a batch of recent ISIR events (insolvency register publications) since the given event id. ISIR is an append-only feed — each call returns up to ~1000 events newer than `since_id`. Use `last_id` from response as next `since_id`. Useful for compliance monitoring or to back-fill an index.
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://isir.cz-agents.dev/mcp | streamable-http | answering | 198 ms | 10 min ago |
Isir — questions
Answers built from our own checks of this server.
What can Isir do?
It exposes 3 tools, read directly from the server on our last check. Among them: check_ico_insolvency, poll_isir_events, search_person_insolvency. 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 Isir working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 196 ms. The bar chart above shows every period we have measured.
How do I connect Isir?
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 Isir need an API key?
No. Isir completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Isir?
It answers our handshake in 196 ms on average, which is faster than 64% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use Isir?
The npm package @czagents/isir was installed 181 times in the last week. Week over week that is +22%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Isir open source?
Yes — it is published under the MIT licence, written in TypeScript, 4 stars on GitHub and 2 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.