Subgraph Deployment Pipeline Trigger

WHAT IT DOES

Subgraph Deployment Pipeline Trigger is a read-only developer tool that generates GraphQL subgraph configuration files from EVM smart contract ABIs. It analyzes contract bytecode to extract function selectors and events, generates a schema.graphql file with entity definitions based on contract events, creates a subgraph.yaml manifest with network and start block configuration, produces event handler stubs in TypeScript/AssemblyScript, and provides example GraphQL queries. The tool accelerates The Graph subgraph development by scaffolding the boilerplate files needed for subgraph deployment, enabling developers to focus on implementing event handlers rather than writing configuration from scratch.

HOW TO USE

Connect your EVM-compatible wallet via the BGWallet bridge and select the network where your contract is deployed. Enter the contract address and optionally provide a subgraph name, then click "Generate Subgraph Config". The tool fetches the bytecode, extracts the ABI from function selectors and event patterns, and generates four key artifacts: schema.graphql with entity definitions, subgraph.yaml with the data source configuration, event handler stubs in TypeScript, and example GraphQL queries. Results include a summary of detected events and functions, a recommended start block, and copyable code blocks for each artifact. All analysis is read-only—no signatures or transactions are submitted.

TECHNICAL MECHANISM

The tool uses ethers.js v5.7.2 to fetch contract bytecode via provider.getCode(address), then scans for PUSH4 opcodes (0x63) to extract function selectors and maps them to common function signatures (transfer, approve, balanceOf, totalSupply, allowance). It also detects standard event definitions (Transfer, Approval) using the ABI structure. The current block number is fetched to calculate a recommended start block (100,000 blocks before the current block). The tool maps the selected network ID to the appropriate The Graph network name (mainnet, goerli, sepolia, matic, optimism, arbitrum-one, bsc, avalanche). The schema is generated by creating GraphQL entity types for each event, with fields corresponding to event parameters and all entities having an id field of type Bytes. The manifest is constructed as a JSON object following the subgraph.yaml specification, including the data source address, network, start block, and mapping configuration. Event handler stubs are generated as TypeScript functions that import event types and include placeholder implementations. Example GraphQL queries are generated for each event to demonstrate querying the subgraph. The generated files follow The Graph's standard patterns and are ready for integration into a subgraph project.

WHAT IT CANNOT SEE

This tool has fundamental limitations that users must understand. It cannot actually deploy or trigger subgraph pipelines—the tool generates configuration files but does not interact with The Graph API, Graph Node, or any deployment infrastructure. It cannot guarantee subgraph sync completion or indexing speed—sync times depend on the Graph Node's performance, network conditions, and contract activity volume. It cannot handle subgraphs that require complex entity relationships or cross-contract joins without manual schema definitions—the tool generates simple event-based entities and does not infer relationships between entities. It cannot monitor subgraph health or alert on failures—the tool does not provide ongoing monitoring or alerting capabilities. It cannot generate subgraph schemas for contracts without complete event ABIs—if the contract has no events or the event structure is not parsable, the generated schema will be minimal. It cannot generate handlers for custom business logic—the generated handlers are empty stubs that must be implemented manually. It cannot validate that the generated configuration will compile or deploy successfully. It cannot handle contracts with overloaded events or complex parameter types beyond basic Solidity types.

PLEASE NOTE

This tool only supports EVM-compatible blockchains (Ethereum, Polygon, BSC, Avalanche C-Chain, Optimism, Arbitrum, and their testnets). Solana, Tron, Starknet, SUI, TON, Aptos, Bitcoin, Cosmos, and XRP are not supported. The tool is free, open-source, requires no API keys, and uses the wallet's native provider for all read operations. Generated configuration files are templates and require manual review and implementation before deployment.