Skip to main content
Glama
dewanshparashar

Arbitrum MCP Server

get_rollup_address

Retrieve the rollup contract address for a specific Arbitrum chain to enable direct queries and contract interactions.

Instructions

Get the rollup contract address for a specific Arbitrum chain. Use this for direct rollup address queries like 'what's the rollup address of Xai?', 'Xai rollup contract', or 'rollup address for Arbitrum One'.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
chainNameYesChain name to get rollup address for (e.g., 'Xai', 'Arbitrum One', 'Nova')

Implementation Reference

  • Main execution handler for the get_rollup_address tool. Looks up chain info using ChainLookupService.findChainByName and extracts/returns the rollup address if available.
    case "get_rollup_address":
      const rollupChainInfo =
        await this.chainLookupService.findChainByName(
          args.chainName as string
        );
      if (!rollupChainInfo) {
        return {
          content: [
            {
              type: "text",
              text: `Chain "${args.chainName}" not found`,
            },
          ],
        };
      }
      if (!rollupChainInfo.rollup) {
        return {
          content: [
            {
              type: "text",
              text: `Rollup contract address not available for ${rollupChainInfo.name}`,
            },
          ],
        };
      }
      return {
        content: [
          {
            type: "text",
            text: `${rollupChainInfo.name} rollup contract address: ${rollupChainInfo.rollup}`,
          },
        ],
      };
  • Tool schema definition including name, description, and input schema requiring 'chainName' parameter.
      name: "get_rollup_address",
      description:
        "Get the rollup contract address for a specific Arbitrum chain. Use this for direct rollup address queries like 'what's the rollup address of Xai?', 'Xai rollup contract', or 'rollup address for Arbitrum One'.",
      inputSchema: {
        type: "object" as const,
        properties: {
          chainName: {
            type: "string",
            description:
              "Chain name to get rollup address for (e.g., 'Xai', 'Arbitrum One', 'Nova')",
          },
        },
        required: ["chainName"],
      },
    },
  • src/index.ts:821-1681 (registration)
    The getAvailableTools method returns the list of all tools including 'get_rollup_address', effectively registering it for ListToolsRequestSchema handler.
    private getAvailableTools(): Tool[] {
      console.error("ArbitrumMCPServer: Creating tools list");
      const tools = [
        {
          name: "set_rpc_url",
          description: "Set the default RPC URL for subsequent requests",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description: "The RPC URL to set as default",
              },
            },
            required: ["rpcUrl"],
          },
        },
        {
          name: "get_rpc_url",
          description: "Get the current default RPC URL",
          inputSchema: {
            type: "object" as const,
            properties: {},
          },
        },
        {
          name: "clear_rpc_url",
          description: "Clear the default RPC URL",
          inputSchema: {
            type: "object" as const,
            properties: {},
          },
        },
        {
          name: "node_health",
          description:
            "Check Arbitrum node health status (requires admin API access - may not work with public RPCs)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
            },
            required: [],
          },
        },
        {
          name: "sync_status",
          description:
            "Get node synchronization status (may fall back to current block number if sync API unavailable)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
            },
            required: [],
          },
        },
        {
          name: "node_peers",
          description:
            "Get connected peers information (requires admin API access - will not work with public RPCs)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
            },
            required: [],
          },
        },
        {
          name: "arbos_version",
          description:
            "Get the ArbOS version number for any Arbitrum chain. Use this for questions like 'what ArbOS version is Xai running?', 'ArbOS version of Arbitrum One', 'what version of ArbOS', or 'check ArbOS version'. Supports chain names like 'Xai', 'Arbitrum One', 'Nova', etc.",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One', 'Nova') - will auto-resolve to RPC URL",
              },
            },
            required: [],
          },
        },
        {
          name: "latest_block",
          description: "Get the latest block information",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the chain (optional if default is set)",
              },
            },
            required: [],
          },
        },
        {
          name: "get_balance",
          description: "Get balance of an address in wei",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the chain (optional if default is set)",
              },
              address: {
                type: "string",
                description: "Ethereum address to check balance for",
              },
            },
            required: ["address"],
          },
        },
        {
          name: "get_balance_ether",
          description: "Get balance of an address in ETH",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the chain (optional if default is set)",
              },
              address: {
                type: "string",
                description: "Ethereum address to check balance for",
              },
            },
            required: ["address"],
          },
        },
        {
          name: "get_transaction",
          description: "Get transaction details by hash",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the chain (optional if default is set)",
              },
              txHash: {
                type: "string",
                description: "Transaction hash",
              },
            },
            required: ["txHash"],
          },
        },
        {
          name: "get_transaction_receipt",
          description: "Get transaction receipt by hash",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the chain (optional if default is set)",
              },
              txHash: {
                type: "string",
                description: "Transaction hash",
              },
            },
            required: ["txHash"],
          },
        },
        {
          name: "is_contract",
          description: "Check if an address is a contract",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the chain (optional if default is set)",
              },
              address: {
                type: "string",
                description: "Address to check",
              },
            },
            required: ["address"],
          },
        },
        {
          name: "list_chains",
          description:
            "List all available Arbitrum Orbit chains and their names. Use this to see what chains are available for querying.",
          inputSchema: {
            type: "object" as const,
            properties: {},
          },
        },
        {
          name: "search_chains",
          description:
            "Search for Arbitrum chains by name, chain ID, or partial name match. Perfect for finding chains when you have incomplete information.",
          inputSchema: {
            type: "object" as const,
            properties: {
              query: {
                type: "string",
                description:
                  "Search query (chain name like 'Xai', 'Arbitrum One', chain ID like '42161', or partial name)",
              },
            },
            required: ["query"],
          },
        },
        {
          name: "chain_info",
          description:
            "Get comprehensive chain information including rollup contract address, bridge addresses, chain ID, RPC URL, explorer URL, native token details, and all bridge contract addresses. Use this for questions about rollup addresses, bridge contracts, chain IDs, or any chain-specific data for Arbitrum chains like Xai, Arbitrum One, etc.",
          inputSchema: {
            type: "object" as const,
            properties: {
              chainName: {
                type: "string",
                description:
                  "Chain name to look up (e.g., 'Xai', 'Arbitrum One', 'Nova', 'Stylus')",
              },
            },
            required: ["chainName"],
          },
        },
        {
          name: "get_rollup_address",
          description:
            "Get the rollup contract address for a specific Arbitrum chain. Use this for direct rollup address queries like 'what's the rollup address of Xai?', 'Xai rollup contract', or 'rollup address for Arbitrum One'.",
          inputSchema: {
            type: "object" as const,
            properties: {
              chainName: {
                type: "string",
                description:
                  "Chain name to get rollup address for (e.g., 'Xai', 'Arbitrum One', 'Nova')",
              },
            },
            required: ["chainName"],
          },
        },
    
        // ========== NEW ARBITRUM NODE TOOLS ==========
    
        {
          name: "arb_check_publisher_health",
          description:
            "Check the health status of the transaction publisher/sequencer (requires admin API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
            },
            required: [],
          },
        },
        {
          name: "arb_get_raw_block_metadata",
          description:
            "Retrieve raw block metadata for specified block ranges (requires admin API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
              fromBlock: {
                type: "number",
                description: "Starting block number",
              },
              toBlock: {
                type: "number",
                description:
                  "Ending block number (defaults to fromBlock if not provided)",
              },
            },
            required: ["fromBlock"],
          },
        },
        {
          name: "arb_latest_validated",
          description:
            "Get the latest validated global state information (requires admin API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
            },
            required: [],
          },
        },
        {
          name: "arbtrace_call",
          description:
            "Trace individual calls with specified trace types (requires trace API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
              callArgs: {
                type: "object",
                description: "Call arguments (to, from, data, etc.)",
              },
              traceTypes: {
                type: "array",
                description:
                  "Array of trace types (e.g., ['trace', 'stateDiff'])",
                items: { type: "string" },
              },
              blockNumOrHash: {
                type: "string",
                description: "Block number or hash (defaults to 'latest')",
              },
            },
            required: ["callArgs"],
          },
        },
        {
          name: "arbtrace_callMany",
          description:
            "Trace multiple calls in batch for efficiency (requires trace API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
              calls: {
                type: "array",
                description: "Array of call objects to trace",
                items: { type: "object" },
              },
              blockNumOrHash: {
                type: "string",
                description: "Block number or hash (defaults to 'latest')",
              },
            },
            required: ["calls"],
          },
        },
        {
          name: "arbtrace_replayBlockTransactions",
          description:
            "Replay and trace all transactions in a specific block (requires trace API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
              blockNumOrHash: {
                type: "string",
                description: "Block number or hash to replay",
              },
              traceTypes: {
                type: "array",
                description:
                  "Array of trace types (e.g., ['trace', 'stateDiff'])",
                items: { type: "string" },
              },
            },
            required: ["blockNumOrHash"],
          },
        },
        {
          name: "arbtrace_replayTransaction",
          description:
            "Replay and trace a specific transaction (requires trace API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
              txHash: {
                type: "string",
                description: "Transaction hash to replay",
              },
              traceTypes: {
                type: "array",
                description:
                  "Array of trace types (e.g., ['trace', 'stateDiff'])",
                items: { type: "string" },
              },
            },
            required: ["txHash"],
          },
        },
        {
          name: "arbtrace_transaction",
          description:
            "Get trace information for a specific transaction (requires trace API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
              txHash: {
                type: "string",
                description: "Transaction hash to trace",
              },
            },
            required: ["txHash"],
          },
        },
        {
          name: "arbtrace_get",
          description:
            "Get specific trace data at a given path within a transaction (requires trace API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
              txHash: {
                type: "string",
                description: "Transaction hash",
              },
              path: {
                type: "array",
                description: "Path to specific trace data",
                items: { type: "string" },
              },
            },
            required: ["txHash"],
          },
        },
        {
          name: "arbtrace_block",
          description:
            "Get trace information for all transactions in a block (requires trace API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
              blockNumOrHash: {
                type: "string",
                description: "Block number or hash to trace",
              },
            },
            required: ["blockNumOrHash"],
          },
        },
        {
          name: "arbtrace_filter",
          description:
            "Filter traces based on specified criteria (requires trace API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
              filter: {
                type: "object",
                description: "Filter criteria for traces",
              },
            },
            required: ["filter"],
          },
        },
        {
          name: "arbdebug_validateMessageNumber",
          description: "Validate a specific message number (requires debug API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
              msgNum: {
                type: "number",
                description: "Message number to validate",
              },
              full: {
                type: "boolean",
                description: "Whether to perform full validation",
              },
              moduleRoot: {
                type: "string",
                description: "Optional module root hash",
              },
            },
            required: ["msgNum"],
          },
        },
        {
          name: "arbdebug_validationInputsAt",
          description:
            "Get validation inputs at a specific message (requires debug API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
              msgNum: {
                type: "number",
                description: "Message number to get validation inputs for",
              },
              target: {
                type: "string",
                description: "Target for validation inputs",
              },
            },
            required: ["msgNum"],
          },
        },
        {
          name: "maintenance_status",
          description:
            "Check maintenance status - seconds since last maintenance (requires admin API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
            },
            required: [],
          },
        },
        {
          name: "maintenance_trigger",
          description:
            "Manually trigger maintenance operations (requires admin API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
            },
            required: [],
          },
        },
        {
          name: "timeboost_sendExpressLaneTransaction",
          description:
            "Submit priority transactions through express lanes for faster processing (requires timeboost API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
              submission: {
                type: "object",
                description: "Express lane submission data",
              },
            },
            required: ["submission"],
          },
        },
        {
          name: "auctioneer_submitAuctionResolutionTransaction",
          description:
            "Submit auction resolution transactions for express lane functionality (requires auctioneer API)",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum node (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
              transaction: {
                type: "object",
                description: "Auction resolution transaction data",
              },
            },
            required: ["transaction"],
          },
        },
    
        // ========== MONITORING TOOLS ==========
    
        {
          name: "batch_posting_status",
          description:
            "Monitor batch posting activity. Tracks when batches were last posted to the sequencer inbox and current backlog size. Essential for PM and support teams to understand chain data availability status.",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum chain (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
              parentRpcUrl: {
                type: "string",
                description: "Parent chain RPC URL (e.g., Ethereum mainnet RPC)",
              },
              sequencerInboxAddress: {
                type: "string",
                description: "Sequencer inbox contract address",
              },
              bridgeAddress: {
                type: "string",
                description: "Bridge contract address",
              },
            },
            required: ["parentRpcUrl", "sequencerInboxAddress", "bridgeAddress"],
          },
        },
        {
          name: "assertion_status",
          description:
            "Monitor assertion creation and confirmation activity. Tracks NodeCreated vs NodeConfirmed events to understand rollup validation status. Critical for PM and support teams to monitor chain security and finality.",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum chain (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
              parentRpcUrl: {
                type: "string",
                description: "Parent chain RPC URL (e.g., Ethereum mainnet RPC)",
              },
              rollupAddress: {
                type: "string",
                description: "Rollup contract address",
              },
            },
            required: ["parentRpcUrl", "rollupAddress"],
          },
        },
        {
          name: "gas_status",
          description:
            "Monitor current gas prices on the chain. Essential for identifying gas price spikes and understanding transaction costs. Useful for PM and support teams to monitor network congestion.",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum chain (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve to RPC URL",
              },
            },
            required: [],
          },
        },
        {
          name: "comprehensive_chain_status",
          description:
            "Get comprehensive chain status including ArbOS version, batch posting, assertion monitoring, and gas prices. Perfect for PM and support teams asking 'what is the current status of XAI?' or similar comprehensive status checks. Auto-resolves contract addresses from chain name when possible.",
          inputSchema: {
            type: "object" as const,
            properties: {
              rpcUrl: {
                type: "string",
                description:
                  "The RPC URL of the Arbitrum chain (optional if default is set)",
              },
              chainName: {
                type: "string",
                description:
                  "Chain name (e.g., 'Xai', 'Arbitrum One') - will auto-resolve RPC URL and contract addresses",
              },
              parentRpcUrl: {
                type: "string",
                description: "Parent chain RPC URL (auto-resolved if chainName provided)",
              },
              sequencerInboxAddress: {
                type: "string",
                description: "Sequencer inbox contract address (auto-resolved if chainName provided)",
              },
              bridgeAddress: {
                type: "string",
                description: "Bridge contract address (auto-resolved if chainName provided)",
              },
              rollupAddress: {
                type: "string",
                description: "Rollup contract address (auto-resolved if chainName provided)",
              },
            },
            required: [],
          },
        },
      ];
      console.error(`ArbitrumMCPServer: Created ${tools.length} tools`);
      return tools;
    }
  • Helper method in ChainLookupService used by the tool handler to resolve chain name to OrbitChainData containing the rollup address.
    async findChainByName(name: string): Promise<OrbitChainData | null> {
      await this.ensureChainsData();
      
      const searchName = name.toLowerCase().trim();
      
      // Try exact name match first
      let chain = this.chainsData.find(chain => 
        chain.name.toLowerCase() === searchName
      );
      
      if (!chain) {
        // Try slug match
        chain = this.chainsData.find(chain => 
          chain.slug?.toLowerCase() === searchName
        );
      }
      
      if (!chain) {
        // Try partial name match
        chain = this.chainsData.find(chain => 
          chain.name.toLowerCase().includes(searchName) ||
          searchName.includes(chain.name.toLowerCase())
        );
      }
      
      return chain || null;
    }
  • Interface definition for OrbitChainData including the optional 'rollup' property accessed by the tool.
    rollup?: string;
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden. It describes the tool's behavior as retrieving contract addresses for specific chains, which is clear but lacks details on error handling, rate limits, or authentication requirements. While it specifies the query context, it doesn't disclose potential limitations or response formats, leaving gaps for a tool with no annotation coverage.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is appropriately sized and front-loaded, with the first sentence stating the core purpose and the second providing usage examples. Every sentence earns its place by clarifying when and how to use the tool, with no redundant or unnecessary information, making it efficient and easy to parse.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's low complexity (1 parameter, no output schema, no annotations), the description is mostly complete. It covers purpose, usage, and parameter context adequately. However, it lacks details on return values or error cases, which would be beneficial since there's no output schema. For a simple query tool, this is a minor gap.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 100% description coverage, with the single parameter 'chainName' well-documented in the schema. The description adds minimal value beyond the schema by implying the parameter is used for queries like 'Xai' or 'Arbitrum One', but doesn't provide additional syntax or format details. Given the high schema coverage, a baseline score of 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose with specific verb ('Get') and resource ('rollup contract address for a specific Arbitrum chain'), and distinguishes it from siblings by focusing on direct rollup address queries. It provides concrete examples like 'Xai' and 'Arbitrum One' to illustrate its unique function among other tools that handle different blockchain operations.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly states when to use this tool: 'for direct rollup address queries' and provides specific query examples ('what's the rollup address of Xai?', 'Xai rollup contract', 'rollup address for Arbitrum One'). This gives clear context for usage without needing to reference alternatives, as the tool's purpose is distinct from siblings like 'get_balance' or 'chain_info'.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/dewanshparashar/arbitrum-mcp'

If you have feedback or need assistance with the MCP directory API, please join our Discord server