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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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
includearrayExtra sections to include in the brief
kindstringBrief kind: fresh_chat_bootstrap or quick_continuity
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
limitnumberMaximum number of results to return
projectIdstringProject ID (uses token-scoped project if omitted)
querystringSearch query to find relevant memory items
tagsarrayFilter by tags attached to memory items
typesarrayFilter by memory types: decision, constraint, task, note, artifact, requirement
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
contentstringThe memory content to store
projectIdstringProject ID (uses token-scoped project if omitted)
tagsarrayTags for categorizing and searching
titlestringShort title for the memory item
typestringMemory type: decision, constraint, task, note, artifact, or requirement
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
constraintsarrayConstraints discovered during the session
decisionsarrayDecisions made during the session
nextStepsarrayTasks or next steps identified
notesarrayGeneral notes or observations
progressstringDescription of progress made
projectIdstringProject ID (uses token-scoped project if omitted)
summarystringHigh-level session summary
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
actionstringAction to perform: update, delete, or archive
contentstringNew content (for update action)
memoryIdstringThe ID of the memory item to manage
tagsarrayNew tags (for update action)
titlestringNew title (for update action)
project.updateUpdate a project's name or description.3 params
Update a project's name or description.
Parameters* required
descriptionstringNew project description
namestringNew project name
projectIdstringProject ID (uses token-scoped project if omitted)
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
projectIdstringProject ID (uses token-scoped project if omitted)
querystringWhat to search for in project memory
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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