"Building voice agents and controlling SIP phones" matching MCP servers:

• web3-agents-mcp

  hanjoonchoe

  A

  license

  -

  quality

  B

  maintenance

  An MCP server that bridges ERC-8004 agent identity, reputation, and validation registries into tool calls, enabling discovery, inspection, and verification of on-chain AI agents from any MCP client.

  Last updated 2026-07-13

  MIT

• agents-mcp-server

  agentsmcp

  A

  license

  -

  quality

  B

  maintenance

  A set of MCP servers that provide AI agents with safe, composable access to web3 market data and trading, featuring read-only intelligence and execution modes with SIM/PAPER/LIVE safeguards.

  Last updated 2026-07-01

  MIT

• Nostr Tools for AI Agents

  jorgenclaw

  A

  license

  C

  quality

  C

  maintenance

  23 tools for AI agents working with Nostr Open source. No API key. No account. NIP-46 remote signing Publish notes, reply, react, repost Encrypted DMs (NIP-04 + NIP-44) Fetch events, profiles, social graph

  Last updated 2026-03-20

  23

  6

  1

  MIT

• Pay per Call Nostr service for

  jorgenclaw

  F

  license

  A

  quality

  C

  maintenance

  9 tools, Lightning-gated. Pay per call. For agents that need verifiable signed actions with an audit trail. Nostr event signing via daemon Publish events to relays Create Lightning invoices Action receipts — signed proof of agent actions Identity attestation

  Last updated 2026-03-20

  9

• CRE MCP Server

  Midwest-AI-Solutions

  F

  license

  -

  quality

  D

  maintenance

  MCP server for Chainlink Runtime Environment, enabling build, simulate, deploy, and manage CRE workflows from any MCP client.

  Last updated 2026-02-19
• 

  WaxSealofficial

  degenlegion-com

  A

  license

  A

  quality

  A

  maintenance

  WaxSeal MCP gives AI agents cryptographic identity — verify any WaxSeal fingerprint, check Ed25519 signatures, and gate irreversible actions with human-signed approval tokens before execution. It connects Claude Desktop, Cursor, and Windsurf to the WaxSeal trust network so agents can prove who authorized an action and reject tampered credentials in under a second.

  Last updated 2026-07-07

  8

  6

  5

  1

  MIT

• Relay MCP Server

  relayprotocol

  A

  license

  A

  quality

  C

  maintenance

  A Model Context Protocol (MCP) server for Relay Protocol — cross-chain bridge and swap tools for AI agents.

  Last updated 2026-06-29

  20

  40

  3

  MIT

• cpu-game-mcp

  sodiqit

  A

  license

  A

  quality

  A

  maintenance

  Enables AI agents to play the CPU Game on EVM, including world exploration, building, crafting, and trading via natural language.

  Last updated 2026-07-18

  38

  431

  MIT

• Relay MCP Server

  relayprotocol

  A

  license

  A

  quality

  C

  maintenance

  Provides cross-chain bridge and swap tools for AI agents using the Relay Protocol to interact with multiple blockchain networks. It enables agents to query supported chains, obtain transaction quotes, and generate unsigned transaction data for token transfers and swaps.

  Last updated 2026-06-29

  10

  40

  3

  MIT
• 

  @agentkarma/mcpofficial

  agentkarmaio

  A

  license

  A

  quality

  C

  maintenance

  Exposes AgentKarma's read-only trust and reputation tools (karma, agents, succession, bonds, check_trust) to any MCP client for checking on-chain agent reputation.

  Last updated 2026-06-25

  9

  14

  1

  MIT

• Clawswap

  WarTech9

  A

  license

  A

  quality

  D

  maintenance

  MCP server providing cross-chain swaps between Solana and Base for AI agents paid for via x402 micropayments.

  Last updated 2026-02-27

  3

  112

  2

  MIT
• 

  hyperd-mcpofficial

  hyperd-ai

  A

  license

  A

  quality

  A

  maintenance

  Pre-trade DeFi intelligence for AI agents. 20 paid x402 endpoints, USDC on Base.

  Last updated 2026-06-09

  23

  130

  1

  MIT

• Substreams Search MCP Server

  PaulieB14

  A

  license

  A

  quality

  C

  maintenance

  MCP server that lets AI agents search the substreams.dev package registry.

  Last updated 2026-03-13

  1

  6

  MIT

• Solentic

  blueprint-infrastructure

  A

  license

  A

  quality

  B

  maintenance

  Native Solana staking infrastructure for AI agents. 18 MCP tools for staking, unstaking, validator info, APY, epoch timing, and more. Zero custody — unsigned transactions, agents sign client-side.

  Last updated 2026-06-14

  26

  106

  MIT

• deusproof-mcp

  Abracadabrastartup

  A

  license

  A

  quality

  C

  maintenance

  Enables AI agents to certify their creations with verifiable, timestamped proof anchored to Bitcoin, and to verify certificates.

  Last updated 2026-07-15

  3

  MIT

• liquidity-pools-mcp

  kukapay

  A

  license

  A

  quality

  D

  maintenance

  An MCP server that tracks and analyzes DEX liquidity pools to power intelligent DeFi agents and automated strategies.

  Last updated 2025-06-09

  1

  2

  MIT

• Multichain MCP Server

  wkalidev

  A

  license

  A

  quality

  B

  maintenance

  The only MCP server that gives AI agents native access to Stacks, Celo, and Base — from a single npm package.

  Last updated 2026-07-05

  6

  5

  68

  1

  MIT
• 

  Bloomfilterofficial

  BloomFilter-Labs

  A

  license

  A

  quality

  C

  maintenance

  Service that lets AI Agents search, register, and configure domains

  Last updated 2026-02-26

  10

  193

  9

  MIT

• TheGraph MCP Server

  kukapay

  A

  license

  A

  quality

  F

  maintenance

  Powers AI agents with indexed blockchain data from The Graph, enabling them to fetch subgraph schemas and execute GraphQL queries against blockchain data.

  Last updated 2025-07-31

  2

  9

  MIT

• HimiTrace MCP Server

  hieuluongxuan

  F

  license

  A

  quality

  B

  maintenance

  A Model Context Protocol (MCP) server connecting AI agents to the Polygon blockchain for product origin verification and supply chain timeline auditing

  Last updated 2026-06-11

  6