# space.observe Where is an asteroid/comet in the sky and can you see it? Propagates JPL orbital elements (validated vs Horizons to <0.1 arcmin) to give geocentric RA/Dec, constellation, distance, phase angle, and apparent magnitude. With observer lat/lon: altitude/azimuth, visible-now flag, and the best dark-sky viewing window in the next 24h. Agent View of the PolicyLayer registry record for `space.observe`. HTML page: https://policylayer.com/tools/io-github-2s-io-mcp/space.observe ## Facts - Tool: `space.observe` - 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": "space.observe", "arguments": {} } } ``` ## Why space.observe is rated Low This tool retrieves and calculates astronomical observation data based on input parameters. It has no side effects—no data is created, modified, deleted, or transacted. The output is purely informational for astronomy purposes. Even though it is pay-per-call (settled in USDC), the tool itself performs only read operations; payment is handled separately by the server infrastructure, not by this tool's logic. From the tool's own definition: "Tool performs observational queries only: 'gives geocentric RA/Dec, constellation, distance, phase angle, and apparent magnitude' and 'visible-now flag' and 'best dark-sky viewing window'. No modification, deletion, execution, or financial transaction occurs." ## Use case AI agents call space.observe 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": { "space.observe": {} } } ``` ## 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