Summary
Relay Protocol's MCP server gives you programmatic access to cross-chain bridging and swaps across multiple networks. You get quote generation for token transfers between chains, fee estimation to understand costs before executing, and transaction tracking to monitor bridge operations in flight. Reach for this when you're building workflows that need to move assets across different blockchains without manually juggling multiple bridge interfaces. It abstracts the complexity of cross-chain operations into a set of callable tools, so you can price routes, compare fees, and execute transfers through a single integration point rather than wiring up individual bridge APIs.
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Tools
Public tool metadata for what this MCP can expose to an agent.
9 tools
project.listList all Relay projects you have access to. Returns project IDs, names, slugs, and descriptions.1 params
List all Relay projects you have access to. Returns project IDs, names, slugs, and descriptions.
Parameters* required
limitnumberMaximum number of projects to return
project.get_briefFetch a project context brief — decisions, constraints, progress, and memory items formatted for an AI coding session.4 params
Fetch a project context brief — decisions, constraints, progress, and memory items formatted for an AI coding session.
Parameters* required
kindstringBrief kind: fresh_chat_bootstrap or quick_continuity
includearrayExtra sections to include in the brief
projectIdstringProject ID (uses token-scoped project if omitted)
targetProfileKeystringTarget profile key for formatting
project.get_stateGet full structured project state including overview, objectives, decisions, constraints, and tasks.1 params
Get full structured project state including overview, objectives, decisions, constraints, and tasks.
Parameters* required
projectIdstringProject ID (uses token-scoped project if omitted)
memory.searchSearch memory items by keyword or semantic query. Returns matching decisions, constraints, tasks, notes, and other memory items.5 params
Search memory items by keyword or semantic query. Returns matching decisions, constraints, tasks, notes, and other memory items.
Parameters* required
tagsarrayFilter by tags attached to memory items
limitnumberMaximum number of results to return
querystringSearch query to find relevant memory items
typesarrayFilter by memory types: decision, constraint, task, note, artifact, requirement
projectIdstringProject ID (uses token-scoped project if omitted)
memory.addAdd a memory item to the project. Use this to persist decisions, constraints, tasks, or notes discovered during the session.5 params
Add a memory item to the project. Use this to persist decisions, constraints, tasks, or notes discovered during the session.
Parameters* required
tagsarrayTags for categorizing and searching
typestringMemory type: decision, constraint, task, note, artifact, or requirement
titlestringShort title for the memory item
contentstringThe memory content to store
projectIdstringProject ID (uses token-scoped project if omitted)
context.saveSave a structured session summary with decisions, progress, next steps, and constraints. Call this at the end of a coding session.7 params
Save a structured session summary with decisions, progress, next steps, and constraints. Call this at the end of a coding session.
Parameters* required
notesarrayGeneral notes or observations
summarystringHigh-level session summary
progressstringDescription of progress made
decisionsarrayDecisions made during the session
nextStepsarrayTasks or next steps identified
projectIdstringProject ID (uses token-scoped project if omitted)
constraintsarrayConstraints discovered during the session
memory.manageUpdate, delete, or archive an existing memory item by its ID.5 params
Update, delete, or archive an existing memory item by its ID.
Parameters* required
tagsarrayNew tags (for update action)
titlestringNew title (for update action)
actionstringAction to perform: update, delete, or archive
contentstringNew content (for update action)
memoryIdstringThe ID of the memory item to manage
project.updateUpdate a project's name or description.3 params
Update a project's name or description.
Parameters* required
namestringNew project name
projectIdstringProject ID (uses token-scoped project if omitted)
descriptionstringNew project description
memory.recallSearch memory and retrieve project state in one call. Use before making decisions to check for existing constraints and context.2 params
Search memory and retrieve project state in one call. Use before making decisions to check for existing constraints and context.
Parameters* required
querystringWhat to search for in project memory
projectIdstringProject ID (uses token-scoped project if omitted)
Featured
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →Configuration
RELAY_API_KEYsecretOptional API key for higher rate limits
RELAY_API_URLRelay API base URL (default: https://api.relay.link)
Registryactive
Package@relayprotocol/relay-mcp
TransportSTDIO
AuthRequired
UpdatedMar 10, 2026