@alchemy/mcp-server
MCP ServerFreeMCP server for using Alchemy APIs
Capabilities8 decomposed
blockchain-native rpc method exposure via mcp protocol
Medium confidenceExposes Alchemy's blockchain RPC methods (eth_call, eth_sendTransaction, eth_getBalance, etc.) as standardized MCP tools that Claude and other MCP clients can invoke. Implements the Model Context Protocol specification to translate Alchemy API endpoints into a tool registry with JSON schema validation, enabling LLM agents to interact with blockchain state without direct HTTP knowledge.
Implements MCP as a first-class protocol bridge to Alchemy's RPC infrastructure, allowing Claude and other MCP clients to invoke blockchain methods with automatic schema validation and error handling, rather than requiring custom HTTP clients or SDK wrappers
Provides standardized MCP tool exposure of Alchemy APIs, enabling Claude agents to access blockchain data without custom integration code, whereas direct Alchemy SDK usage requires manual tool definition and schema management
alchemy-specific enhanced rpc methods (enhanced apis)
Medium confidenceExposes Alchemy's proprietary Enhanced APIs (alchemy_getTokenBalances, alchemy_getNFTs, alchemy_getAssetTransfers, etc.) as MCP tools with pre-configured schemas. These methods provide higher-level abstractions over raw Ethereum RPC, returning parsed and indexed blockchain data without requiring agents to manually decode contract ABIs or filter logs.
Wraps Alchemy's proprietary Enhanced APIs (alchemy_* methods) as MCP tools with pre-built schemas, eliminating the need for agents to understand contract ABIs or log parsing — data arrives pre-indexed and decoded from Alchemy's infrastructure
Provides higher-level blockchain data access than raw RPC methods, reducing agent complexity compared to using standard Ethereum RPC where agents must manually decode contract interactions and filter events
mcp tool schema auto-generation from alchemy method signatures
Medium confidenceAutomatically generates MCP-compliant tool schemas (JSON Schema format) from Alchemy's RPC and Enhanced API method signatures, including parameter validation, type coercion, and error handling. Implements schema introspection to map Alchemy's API documentation into structured tool definitions that MCP clients can parse and present to LLMs with proper type hints and constraints.
Implements automatic schema generation from Alchemy's API signatures, reducing manual tool definition work and ensuring schemas stay synchronized with API changes through introspection rather than static configuration
Eliminates manual JSON Schema authoring for Alchemy tools compared to hand-written MCP server implementations, reducing maintenance burden and schema drift
alchemy api key management and request signing
Medium confidenceHandles secure storage and injection of Alchemy API keys into outbound RPC requests, implementing request signing and authentication headers required by Alchemy's endpoints. Manages API key lifecycle (rotation, expiration) and enforces rate-limiting headers to prevent quota exhaustion, abstracting authentication complexity from MCP clients.
Centralizes Alchemy API key management within the MCP server, preventing key exposure to clients and enforcing rate limits at the server boundary rather than delegating to individual client implementations
Provides server-side API key isolation compared to client-side SDK usage where each agent instance must manage its own authentication, reducing key exposure surface and enabling centralized quota enforcement
multi-chain rpc endpoint routing
Medium confidenceRoutes MCP tool calls to the appropriate Alchemy RPC endpoint based on chain ID or network name (Ethereum mainnet, Polygon, Arbitrum, Optimism, etc.). Implements chain detection logic to automatically select the correct endpoint and validate that requested operations are supported on the target chain, enabling agents to work across multiple blockchains through a unified MCP interface.
Implements transparent multi-chain routing at the MCP server level, allowing agents to specify chain ID once and automatically receive responses from the correct Alchemy endpoint, rather than requiring separate tool definitions per chain
Provides unified multi-chain access through a single MCP interface compared to maintaining separate RPC connections or tool definitions for each blockchain, reducing agent configuration complexity
transaction simulation and dry-run execution
Medium confidenceLeverages Alchemy's simulation APIs (eth_call, eth_simulateExecution) to execute transactions in a read-only sandbox before broadcasting to the network. Returns detailed execution traces including gas usage, state changes, and revert reasons, enabling agents to validate transaction logic and estimate costs without risking real assets or network fees.
Exposes Alchemy's transaction simulation APIs as MCP tools, enabling agents to validate and debug transactions before broadcasting, with detailed execution traces that inform decision-making without requiring custom simulation infrastructure
Provides pre-execution validation through Alchemy's infrastructure compared to agents blindly broadcasting transactions or using generic eth_call without detailed trace information, reducing failed transaction costs
webhook-based event streaming and indexing
Medium confidenceConfigures Alchemy Notify webhooks to stream blockchain events (transfers, contract interactions, state changes) to the MCP server, which indexes and caches events for agent queries. Implements event filtering, deduplication, and persistence, enabling agents to react to real-time blockchain activity without polling or maintaining their own event listeners.
Integrates Alchemy Notify webhooks with MCP to provide real-time event streaming and indexing, enabling agents to subscribe to blockchain events and react without polling, with event deduplication and persistence handled server-side
Provides event-driven architecture compared to polling-based approaches where agents must repeatedly query for new events, reducing latency and API usage for real-time blockchain monitoring
contract abi parsing and function encoding
Medium confidenceParses contract ABIs (Application Binary Interfaces) to automatically generate MCP tools for contract functions, handling parameter encoding, return value decoding, and error handling. Implements ethers.js or web3.js integration to convert human-readable function calls into encoded transaction data (calldata) and decode return values, enabling agents to interact with smart contracts without manual ABI knowledge.
Automatically generates MCP tools from contract ABIs with built-in parameter encoding and return value decoding, eliminating manual calldata construction and allowing agents to interact with contracts using natural function calls
Reduces agent complexity compared to manual ABI parsing and calldata encoding, providing type-safe contract interactions through auto-generated MCP tools
Capabilities are decomposed by AI analysis. Each maps to specific user intents and improves with match feedback.
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@grackle-ai/mcp
MCP (Model Context Protocol) server for Grackle — translates MCP tool calls to ConnectRPC
Best For
- ✓AI agent developers building blockchain-aware applications
- ✓Teams integrating Claude with Web3 workflows
- ✓Builders prototyping LLM-driven DeFi or NFT applications
- ✓NFT and DeFi application builders using Claude agents
- ✓Teams building portfolio tracking or wallet analysis tools
- ✓Developers prototyping token discovery and asset management features
- ✓MCP server developers building blockchain integrations
- ✓Teams automating tool definition maintenance
Known Limitations
- ⚠Limited to Alchemy's supported RPC methods — custom contract ABIs require separate schema definition
- ⚠No built-in transaction simulation or dry-run capability — agents must handle transaction validation externally
- ⚠Synchronous RPC calls only — no streaming or subscription-based event listening
- ⚠No rate-limiting or quota management at the MCP layer — relies on Alchemy account limits
- ⚠Enhanced APIs only available on Alchemy's premium plans — free tier limited to standard RPC
- ⚠Data freshness depends on Alchemy's indexing latency — typically 1-2 blocks behind chain head
Requirements
Input / Output
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MCP server for using Alchemy APIs
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