# lookup_hsn_code A read tool on the Mcp India Stack MCP server. Agent View of the PolicyLayer registry record for `lookup_hsn_code`. HTML page: https://policylayer.com/tools/rehan1020-mcp-india-stack/lookup-hsn-code ## Facts - Tool: `lookup_hsn_code` - Server: Mcp India Stack (`rehan1020/mcp-india-stack`) — https://policylayer.com/tools/rehan1020-mcp-india-stack.md - Homepage: https://github.com/rehan1020/MCP-India-Stack - Risk category: Read (Low risk) - Registry record: grade C, 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": "lookup_hsn_code", "arguments": {} } } ``` ## Why lookup_hsn_code is rated Low HSN code lookups are informational queries against a static reference database. They retrieve data without side effects, authentication requirements, or ability to modify records. The empty description lowers confidence slightly, but the context of master data lookups and the server's offline-first nature confirm this is a simple Read operation with minimal risk if misused by an AI agent. From the tool's own definition: "Tool name 'lookup_hsn_code' indicates a lookup operation for HSN (Harmonized System of Nomenclature) codes, which are master data. Server description explicitly lists 'master data lookups (IFSC, Pincode, HSN/SAC)' as read-only reference data operations." ## Use case AI agents call lookup_hsn_code to retrieve information from Mcp India Stack 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 India Stack: ```json { "version": "1", "default": "deny", "tools": { "lookup_hsn_code": {} } } ``` ## Other tools on Mcp India Stack (59) - `build_aa_consent_request` — Other — https://policylayer.com/tools/rehan1020-mcp-india-stack/build-aa-consent-request.md - `calculate_advance_tax` — Other — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-advance-tax.md - `calculate_emi` — Other — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-emi.md - `calculate_gratuity` — Other — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-gratuity.md - `calculate_income_tax` — Other — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-income-tax.md - `calculate_income_tax_interest` — Other — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-income-tax-interest.md - `calculate_salary_restructuring` — Other — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-salary-restructuring.md - `calculate_tds` — Other — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-tds.md - `bulk_validate_aadhaar` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/bulk-validate-aadhaar.md - `bulk_validate_gstin` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/bulk-validate-gstin.md - `bulk_validate_ifsc` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/bulk-validate-ifsc.md - `bulk_validate_pan` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/bulk-validate-pan.md - `calculate_capital_gains` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-capital-gains.md - `calculate_epf_esic` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-epf-esic.md - `calculate_fd_maturity` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-fd-maturity.md - `calculate_gst` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-gst.md - `calculate_gst_late_fee` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-gst-late-fee.md - `calculate_home_vs_rent` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-home-vs-rent.md - `calculate_hra_exemption` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-hra-exemption.md - `calculate_leave_encashment_tax` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-leave-encashment-tax.md - `calculate_neft_rtgs_imps_charges` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-neft-rtgs-imps-charges.md - `calculate_nps_projection` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-nps-projection.md - `calculate_ppf_maturity` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-ppf-maturity.md - `calculate_presumptive_tax` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-presumptive-tax.md - `calculate_professional_tax` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-professional-tax.md - `calculate_rd_maturity` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-rd-maturity.md - `calculate_sip_returns` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-sip-returns.md - `calculate_step_up_sip` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-step-up-sip.md - `calculate_sukanya_samriddhi` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-sukanya-samriddhi.md - `calculate_surcharge` — Read — https://policylayer.com/tools/rehan1020-mcp-india-stack/calculate-surcharge.md - …and 29 more: https://policylayer.com/tools/rehan1020-mcp-india-stack.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=rehan1020-mcp-india-stack · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/rehan1020-mcp-india-stack