# get_options_overview_by_chain A read tool on the REI Crypto MCP Server MCP server. Agent View of the PolicyLayer registry record for `get_options_overview_by_chain`. HTML page: https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-options-overview-by-chain ## Facts - Tool: `get_options_overview_by_chain` - Server: REI Crypto MCP Server (`0xreisearch/crypto-mcp-beta`) — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta.md - Homepage: https://github.com/0xReisearch/crypto-mcp-beta - Risk category: Read (Low risk) - Registry record: grade B, 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": "get_options_overview_by_chain", "arguments": {} } } ``` ## Why get_options_overview_by_chain is rated Low This tool appears to retrieve options market overview data organized by blockchain chain, consistent with the server's purpose of providing crypto data retrieval without side effects. No evidence of write, execute, destructive, or financial operations. Severity is low because misuse would only expose or exfiltrate market data, not modify systems or move assets. From the tool's own definition: "Tool name 'get_options_overview_by_chain' and server context indicate data retrieval; sibling tools like 'get_active_users', 'get_balances_address', 'get_batch_historical_prices' are all Read operations querying crypto/DeFi data." ## Use case AI agents call get_options_overview_by_chain to retrieve information from REI Crypto MCP Server 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 REI Crypto MCP Server: ```json { "version": "1", "default": "deny", "tools": { "get_options_overview_by_chain": {} } } ``` ## Other tools on REI Crypto MCP Server (116) - `date_to_timestamp` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/date-to-timestamp.md - `get_active_users` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-active-users.md - `get_api_important_entities` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-api-important-entities.md - `get_balances_address` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-balances-address.md - `get_balances_entity` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-balances-entity.md - `get_batch_historical_prices` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-batch-historical-prices.md - `get_bridge_day_stats` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-bridge-day-stats.md - `get_bridge_details` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-bridge-details.md - `get_bridge_transactions` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-bridge-transactions.md - `get_bridge_volume` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-bridge-volume.md - `get_bridges` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-bridges.md - `get_categories` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-categories.md - `get_chain_assets` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-chain-assets.md - `get_chains` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-chains.md - `get_closest_block` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-closest-block.md - `get_coin_by_contract` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-coin-by-contract.md - `get_coin_by_id` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-coin-by-id.md - `get_coin_markets` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-coin-markets.md - `get_coin_ohlc_range` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-coin-ohlc-range.md - `get_counterparties_address` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-counterparties-address.md - `get_counterparties_entity` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-counterparties-entity.md - `get_current_prices` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-current-prices.md - `get_current_time` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-current-time.md - `get_derivatives_overview` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-derivatives-overview.md - `get_derivatives_summary` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-derivatives-summary.md - `get_dex_overview` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-dex-overview.md - `get_dex_overview_by_chain` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-dex-overview-by-chain.md - `get_dex_summary` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-dex-summary.md - `get_emission_data` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-emission-data.md - `get_emissions` — Read — https://policylayer.com/tools/0xreisearch-crypto-mcp-beta/get-emissions.md - …and 86 more: https://policylayer.com/tools/0xreisearch-crypto-mcp-beta.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=0xreisearch-crypto-mcp-beta · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/0xreisearch-crypto-mcp-beta