# aviation.accidents Search NTSB civil aviation accident/incident history (CAROL database). Filter by registration (N-number), state, make, model, city, and/or date range (dateFrom/dateTo YYYY-MM-DD). Returns events with date, location, aircraft, injury severity/counts, flight phase, and an NTSB report URL. Free, US public-domain. At least one filter required. Agent View of the PolicyLayer registry record for `aviation.accidents`. HTML page: https://policylayer.com/tools/io-github-2s-io-mcp/aviation.accidents ## Facts - Tool: `aviation.accidents` - Server: Mcp (`@2sio/mcp`) — https://policylayer.com/tools/io-github-2s-io-mcp.md - Install: `npx -y @2sio/mcp` - Homepage: https://github.com/2s-io/sdk - Risk category: Read (Low risk) - Registry record: grade F, identity unverified - Server rate-limited: no - Parameters: 0 - Recommended policy verdict: Allowed ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "aviation.accidents", "arguments": {} } } ``` ## Why aviation.accidents is rated Low This is a pure data retrieval tool that queries a public historical database. The action is read-only with no side effects—it cannot modify data, execute commands, or trigger external operations. The presence of filter parameters does not elevate it beyond Read category, as these merely scope the query results. Low severity due to read-only nature and public data source. From the tool's own definition: "Tool performs a search/query of NTSB historical accident database with filtering options. Returns events with metadata (date, location, aircraft, injury counts, report URL). No creation, modification, deletion, or execution of external operations." ## Use case AI agents call aviation.accidents to retrieve information from Mcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere. ## Recommended policy (PolicyLayer) Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Mcp: ```json { "version": "1", "default": "deny", "tools": { "aviation.accidents": {} } } ``` ## Other tools on Mcp (571) - `queue.ack` — Destructive — https://policylayer.com/tools/io-github-2s-io-mcp/queue.ack.md - `store.blob-delete` — Destructive — https://policylayer.com/tools/io-github-2s-io-mcp/store.blob-delete.md - `store.doc-delete` — Destructive — https://policylayer.com/tools/io-github-2s-io-mcp/store.doc-delete.md - `store.kv-delete` — Destructive — https://policylayer.com/tools/io-github-2s-io-mcp/store.kv-delete.md - `store.vector-delete` — Destructive — https://policylayer.com/tools/io-github-2s-io-mcp/store.vector-delete.md - `watchers.cancel` — Destructive — https://policylayer.com/tools/io-github-2s-io-mcp/watchers.cancel.md - `ai.council` — Execute — https://policylayer.com/tools/io-github-2s-io-mcp/ai.council.md - `ai.screenshot` — Execute — https://policylayer.com/tools/io-github-2s-io-mcp/ai.screenshot.md - `batch.run` — Execute — https://policylayer.com/tools/io-github-2s-io-mcp/batch.run.md - `dev.preflight` — Execute — https://policylayer.com/tools/io-github-2s-io-mcp/dev.preflight.md - `dev.regex-test` — Execute — https://policylayer.com/tools/io-github-2s-io-mcp/dev.regex-test.md - `hash.compute` — Execute — https://policylayer.com/tools/io-github-2s-io-mcp/hash.compute.md - `pubsub.subscribe` — Execute — https://policylayer.com/tools/io-github-2s-io-mcp/pubsub.subscribe.md - `queue.lease` — Execute — https://policylayer.com/tools/io-github-2s-io-mcp/queue.lease.md - `search.crawl` — Execute — https://policylayer.com/tools/io-github-2s-io-mcp/search.crawl.md - `url.render` — Execute — https://policylayer.com/tools/io-github-2s-io-mcp/url.render.md - `watchers.crypto-address-activity` — Execute — https://policylayer.com/tools/io-github-2s-io-mcp/watchers.crypto-address-activity.md - `watchers.earthquake` — Execute — https://policylayer.com/tools/io-github-2s-io-mcp/watchers.earthquake.md - `predict.crypto-updown` — Financial — https://policylayer.com/tools/io-github-2s-io-mcp/predict.crypto-updown.md - `predict.wallet` — Financial — https://policylayer.com/tools/io-github-2s-io-mcp/predict.wallet.md - `watchers.fear-greed` — Financial — https://policylayer.com/tools/io-github-2s-io-mcp/watchers.fear-greed.md - `watchers.fx-rate` — Financial — https://policylayer.com/tools/io-github-2s-io-mcp/watchers.fx-rate.md - `agent.knowledge-delta` — Other — https://policylayer.com/tools/io-github-2s-io-mcp/agent.knowledge-delta.md - `agriculture.drought` — Read — https://policylayer.com/tools/io-github-2s-io-mcp/agriculture.drought.md - `agriculture.stats` — Read — https://policylayer.com/tools/io-github-2s-io-mcp/agriculture.stats.md - `ai.chat` — Read — https://policylayer.com/tools/io-github-2s-io-mcp/ai.chat.md - `ai.classify` — Read — https://policylayer.com/tools/io-github-2s-io-mcp/ai.classify.md - `ai.describe-image` — Read — https://policylayer.com/tools/io-github-2s-io-mcp/ai.describe-image.md - `ai.entities` — Read — https://policylayer.com/tools/io-github-2s-io-mcp/ai.entities.md - `ai.extract` — Read — https://policylayer.com/tools/io-github-2s-io-mcp/ai.extract.md - …and 541 more: https://policylayer.com/tools/io-github-2s-io-mcp.md ## 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` --- Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-2s-io-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-2s-io-mcp