# Isir MCP server

Agent View of the PolicyLayer registry record for Isir: identity, probed posture, risk grade, and all 6 tools classified. HTML page: https://policylayer.com/tools/dev-cz-agents-isir

## Facts

- Server id: `@czagents/isir`
- Install: `npx -y @czagents/isir`
- Homepage: https://github.com/martinhavel/cz-agents-mcp
- Registry record: grade C, identity unverified
- Lifecycle: active
- Auth posture: open
- Rate-limited: yes
- Tools: 6 (6 with introspected schema)
- Tool categories present: Read
- Context-window cost: 1009 tokens per request — https://policylayer.com/token-cost/dev-cz-agents-isir
- Tags: dev cz agents isir
- Record last modified: 2026-07-31T11:20:11.600Z

## Tools (6)

| Tool | Category | Risk | Record |
| --- | --- | --- | --- |
| `check_ico` | Read | Low | https://policylayer.com/tools/dev-cz-agents-isir/check-ico.md |
| `get_listing` | Read | Low | https://policylayer.com/tools/dev-cz-agents-isir/get-listing.md |
| `list_recent_updates` | Read | Low | https://policylayer.com/tools/dev-cz-agents-isir/list-recent-updates.md |
| `rescreen_portfolio` | Read | Low | https://policylayer.com/tools/dev-cz-agents-isir/rescreen-portfolio.md |
| `search_entity` | Read | Low | https://policylayer.com/tools/dev-cz-agents-isir/search-entity.md |
| `search_person` | Read | Low | https://policylayer.com/tools/dev-cz-agents-isir/search-person.md |

## Tool descriptions

- `check_ico` — Check whether a Czech IČO (or any company by IČO) appears on sanctions lists. Direct exact-ID lookup; pass name to also fuzzy-match if no direct hit.
- `get_listing` — Retrieve the full record for a single sanctions listing by its ID (format: ${source}:${source_list_id}, e.g. "ofac:12345" or "eu:EU.123.789").
- `list_recent_updates` — List sanctions added/removed/modified since a given date. Use for daily monitoring against a watchlist.
- `rescreen_portfolio` — PAID. Re-screen your own list of subjects against sanctions-list changes since a given date. Answers "which of MY clients were affected", which list_recent_updates cannot: that tool returns the global change feed, this one intersects it …
- `search_entity` — Fuzzy-search a sanctioned entity (company, organization) by name. Optional country narrows results.
- `search_person` — Fuzzy-search a sanctioned person by name across all loaded lists. Optional date of birth and nationality narrow results. Returns matches with confidence scores (0-100). 100 = exact ID match, 80+ = strong fuzzy match, lower = review needed.

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=dev-cz-agents-isir · API: https://policylayer.com/registry/api · Recommended policies for every tool: https://policylayer.com/policies/dev-cz-agents-isir