# spraay_free_x402_check Probe URL for x402 payment support. Free to call. Pass the request payload as a JSON string via the body argument. Agent View of the PolicyLayer registry record for `spraay_free_x402_check`. HTML page: https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-free-x402-check ## Facts - Tool: `spraay_free_x402_check` - Server: Spraay X402 Mcp (`spraay-x402-mcp`) — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp.md - Install: `npx -y spraay-x402-mcp` - Homepage: https://github.com/plagtech/spraay-x402-mcp - 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": "spraay_free_x402_check", "arguments": {} } } ``` ## Why spraay_free_x402_check is rated Low This tool retrieves information about whether a URL supports x402 payments. It performs a read-only discovery operation without modifying state, creating resources, executing arbitrary code, or moving funds. The low severity reflects that probing public endpoints for capability detection poses minimal risk even if abused. From the tool's own definition: "Tool probes a URL to check for x402 payment support; described as 'free to call' and takes a request payload. The verb 'probe' and 'check' indicate a query/inspection operation with no side effects." ## Use case AI agents call spraay_free_x402_check to retrieve information from Spraay X402 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 Spraay X402 Mcp: ```json { "version": "1", "default": "deny", "tools": { "spraay_free_x402_check": {} } } ``` ## Other tools on Spraay X402 Mcp (182) - `spraay_cron_cancel` — Destructive — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-cron-cancel.md - `spraay_robots_deregister` — Destructive — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-robots-deregister.md - `spraay_webhook_delete` — Destructive — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-webhook-delete.md - `spraay_compute_text_inference` — Execute — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-compute-text-inference.md - `spraay_free_chat` — Execute — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-free-chat.md - `spraay_gpu_run` — Execute — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-gpu-run.md - `spraay_rpc_call` — Execute — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-rpc-call.md - `spraay_webhook_test` — Execute — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-webhook-test.md - `spraay_agent_wallet_provision` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-agent-wallet-provision.md - `spraay_agent_wallet_revoke_key` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-agent-wallet-revoke-key.md - `spraay_agent_wallet_session_key` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-agent-wallet-session-key.md - `spraay_auth_session` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-auth-session.md - `spraay_batch_execute` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-batch-execute.md - `spraay_bittensor_embeddings` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-bittensor-embeddings.md - `spraay_bittensor_images_generations` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-bittensor-images-generations.md - `spraay_compute_batch` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-compute-batch.md - `spraay_compute_futures_deposit` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-compute-futures-deposit.md - `spraay_compute_futures_execute` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-compute-futures-execute.md - `spraay_compute_futures_refund` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-compute-futures-refund.md - `spraay_compute_image_generation` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-compute-image-generation.md - `spraay_compute_tts` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-compute-tts.md - `spraay_cron_create` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-cron-create.md - `spraay_escrow_cancel` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-escrow-cancel.md - `spraay_escrow_create` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-escrow-create.md - `spraay_escrow_fund` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-escrow-fund.md - `spraay_escrow_release` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-escrow-release.md - `spraay_invoice_create` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-invoice-create.md - `spraay_notify_sms` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-notify-sms.md - `spraay_payroll_execute` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-payroll-execute.md - `spraay_sctp_invoice` — Financial — https://policylayer.com/tools/io-github-plagtech-spraay-x402-mcp/spraay-sctp-invoice.md - …and 152 more: https://policylayer.com/tools/io-github-plagtech-spraay-x402-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-plagtech-spraay-x402-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-plagtech-spraay-x402-mcp