# josephus The surviving seat in the Josephus circle. Seats are 1 through n, counting starts at 1, and every k-th remaining person leaves. 5 people and every 2nd leave seat 3. 41 people and every 3rd leave seat 31. n and k run from 1 to 10000. Price: $0.001 USDC per successful call (x402, Solana). Same tool over HTTPS: POST https://scorptech.it.com/api/x402/v1/josephus Agent View of the PolicyLayer registry record for `josephus`. HTML page: https://policylayer.com/tools/com-it-scorptech-x402/josephus ## Facts - Tool: `josephus` - Server: ScorpTech x402 API (`https://scorptech.it.com/api/x402/mcp`) — https://policylayer.com/tools/com-it-scorptech-x402.md - Homepage: https://github.com/https://scorptech.it.com/api/x402/mcp - Risk category: Execute (High risk) - Registry record: grade F, identity unverified - Server auth posture: open - Server CORS policy: * - Server rate-limited: no - Parameters: 2 (2 required) - Recommended policy verdict: Rate-limited ## Parameters | Parameter | Type | Required | Description | | --- | --- | --- | --- | | `k` | integer | yes | | | `n` | integer | yes | | Parameters from the server's own tool schema. ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "josephus", "arguments": { "k": 0, "n": 0 } } } ``` ## Why josephus is rated High josephus triggers real processes with real consequences. An agent gone sideways doesn't fire it once. It starts dozens of builds, sends mass notifications, or burns through compute before anyone looks up. Risk signals: Bulk/mass operation — affects multiple targets ## Use case AI agents invoke josephus to trigger actions in ScorpTech x402 API. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches ScorpTech x402 API: ```json { "version": "1", "default": "deny", "tools": { "josephus": { "limits": [ { "counter": "josephus_rate", "window": "minute", "max": 10, "scope": "grant" } ] } } } ``` ## Other tools on ScorpTech x402 API (1011) - `collatz_drop` — Destructive — https://policylayer.com/tools/com-it-scorptech-x402/collatz-drop.md - `dedupe_records` — Destructive — https://policylayer.com/tools/com-it-scorptech-x402/dedupe-records.md - `evm_selector_decode` — Destructive — https://policylayer.com/tools/com-it-scorptech-x402/evm-selector-decode.md - `frames_timecode` — Destructive — https://policylayer.com/tools/com-it-scorptech-x402/frames-timecode.md - `ip_reputation` — Destructive — https://policylayer.com/tools/com-it-scorptech-x402/ip-reputation.md - `led_resistor` — Destructive — https://policylayer.com/tools/com-it-scorptech-x402/led-resistor.md - `ruler_odd` — Destructive — https://policylayer.com/tools/com-it-scorptech-x402/ruler-odd.md - `sql_format` — Destructive — https://policylayer.com/tools/com-it-scorptech-x402/sql-format.md - `timecode_diff` — Destructive — https://policylayer.com/tools/com-it-scorptech-x402/timecode-diff.md - `timecode_duration` — Destructive — https://policylayer.com/tools/com-it-scorptech-x402/timecode-duration.md - `timecode_frames` — Destructive — https://policylayer.com/tools/com-it-scorptech-x402/timecode-frames.md - `abi_encode` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/abi-encode.md - `apery_term` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/apery-term.md - `ballot` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/ballot.md - `baum_sweet` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/baum-sweet.md - `binom` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/binom.md - `bit_subset` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/bit-subset.md - `biunitary_sigma` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/biunitary-sigma.md - `champernowne_start` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/champernowne-start.md - `clinical_trials` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/clinical-trials.md - `coin_min` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/coin-min.md - `coin_ways` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/coin-ways.md - `color_palette` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/color-palette.md - `compound_interest` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/compound-interest.md - `cron_explain` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/cron-explain.md - `curl_to_code` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/curl-to-code.md - `date_calc` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/date-calc.md - `delannoy` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/delannoy.md - `delannoy_sum` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/delannoy-sum.md - `dmarc_report_parse` — Execute — https://policylayer.com/tools/com-it-scorptech-x402/dmarc-report-parse.md - …and 981 more: https://policylayer.com/tools/com-it-scorptech-x402.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=com-it-scorptech-x402 · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/com-it-scorptech-x402