feat: add transaction history tool and integrate with stellarTools

[Shrikant1a]

🚀 Overview

This PR introduces a new transaction history tool to the Stellar Agent Kit, enabling developers to fetch and analyze past transactions from the Stellar blockchain.

✨ Features Added

• Implemented getTransactionHistory(address) function
• Fetches transaction data using Stellar Horizon API
• Returns structured transaction details (hash, timestamp, memo, operation count)
• Includes error handling for network failures and invalid inputs

🔧 Integration

• Exported the new tool from index.ts
• Integrated the tool into the stellarTools array so it can be used by the agent system

🧠 Technical Details

• Uses async/await for handling API calls
• Maps raw transaction data into a clean and reusable format
• Designed to be modular and easily extendable

🌍 Impact

This enhancement improves developer experience by providing an easy way to access transaction history and expands the SDK's functionality for building DeFi and blockchain applications on Stellar.

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Summary by cubic

Adds a getTransactionHistory(address) tool and wires it into stellarTools so agents can fetch past Stellar transactions via the Horizon API. This lets apps quickly inspect an account’s recent activity.

• New Features
  • Fetches from https://horizon.stellar.org/accounts/{address}/transactions
  • Returns: hash, created_at, operation_count, memo
  • Exported from index.ts and added to stellarTools
  • Basic error handling; throws on request failure

^{Written for commit 9159d5f. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 2 files

[daiwikmh]

remove emoji from comment, and check the ci checks