Bridgekitty
Aggregates quotes from deBridge, Relay, LI.FI, Across, and Squid to find the cheapest cross-chain bridge route across EVM, Solana, and Cosmos chains. Exposes tools for getting quotes, executing transfers, and tracking bridge status. Handles ERC-20 approvals automatically and can sign transactions locally if you pass sign_and_send: true with stored wallet keys. Includes balance checking before execution and warns when gas plus fees exceed available funds. Reach for this when you need an AI agent to compare bridge costs and execute transfers without manually checking five different protocols. The v0.3.9 release removed XPRT staking tools to keep the scope focused on bridging alone.
- tools
- 12
- auth
- Secret needed
- transport
- STDIO
- env vars
- 2
- last updated
- Mar 11, 2026
Tools
12 toolsPublic tool metadata for what this MCP can expose to an agent.
bridge_get_quoteGet competitive quotes from all backends. Shows fees, time estimates, balance warnings.
Get competitive quotes from all backends. Shows fees, time estimates, balance warnings.
No parameter schema in public metadata yet.
bridge_executeBuild transaction(s) from a quote. Handles approvals, auto-refreshes expired quotes. Set `sign_and_send: true` to auto-sign and broadcast.
Build transaction(s) from a quote. Handles approvals, auto-refreshes expired quotes. Set `sign_and_send: true` to auto-sign and broadcast.
No parameter schema in public metadata yet.
bridge_statusTrack bridge progress. On-chain fallback when API hasn't indexed yet.
Track bridge progress. On-chain fallback when API hasn't indexed yet.
No parameter schema in public metadata yet.
bridge_chainsList supported chains with provider coverage.
List supported chains with provider coverage.
No parameter schema in public metadata yet.
bridge_tokensSearch tokens on a chain.
Search tokens on a chain.
No parameter schema in public metadata yet.
bridge_quote_multiMulti-hop route resolution when no direct route exists.
Multi-hop route resolution when no direct route exists.
No parameter schema in public metadata yet.
bridgekitty_helpAgent onboarding guide with examples and tool usage.
Agent onboarding guide with examples and tool usage.
No parameter schema in public metadata yet.
xprt_onboardGuided onboarding flow for first-time users.
Guided onboarding flow for first-time users.
No parameter schema in public metadata yet.
wallet_setupCreate wallets for EVM, Cosmos, Solana from a single mnemonic.
Create wallets for EVM, Cosmos, Solana from a single mnemonic.
No parameter schema in public metadata yet.
wallet_importImport an existing wallet from a mnemonic or private key.
Import an existing wallet from a mnemonic or private key.
No parameter schema in public metadata yet.
wallet_statusShow configured wallet addresses and key source.
Show configured wallet addresses and key source.
No parameter schema in public metadata yet.
wallet_balanceCheck balances across all chains with USD prices (CoinGecko).
Check balances across all chains with USD prices (CoinGecko).
No parameter schema in public metadata yet.
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LIFI_API_KEYsecretLI.FI API key for enhanced rate limits (optional, works without)
SQUID_INTEGRATOR_IDSquid integrator ID (optional)
Readme
BridgeKitty 🐱
Cross-chain bridge aggregator MCP server for AI agents. One server, 5 bridge backends, best routes across EVM, Solana, and Cosmos chains.
BridgeKitty gives AI agents (Claude, Cursor, GPT, or any MCP-compatible AI) the ability to find and execute cross-chain bridge transfers — with automatic route optimization, fee comparison, balance checks, and safety warnings.
Latest npm release: @persistenceone/bridgekitty@0.3.9
What's New in v0.3.9
- XPRT tools extracted — staking, rewards, and farming tools moved to the standalone
xprt-farming-toolkitpackage - Persistence Interop backend removed — BridgeKitty is now a focused bridge aggregator across 5 backends (deBridge, Relay, LI.FI, Across, Squid)
- Slimmer surface area — fewer tools, clearer scope for agents
Details
- Repository
- github.com/persistenceone/bridgekitty
- Package
@persistenceone/bridgekitty- Transport
- STDIO
- Auth
- Required
- Registry
- MCP registry, active