"Canonical" matching MCP servers:

• 

  markovian-mcpofficial

  MarkovianProtocol

  A

  license

  A

  quality

  D

  maintenance

  Bitcoin-anchored provenance for AI outputs; enables stamping, verifying, and tracing outputs with offline-verifiable canonical roots.

  Updated 12 days ago (2026-08-13 01:40 UTC)

  3

  Apache 2.0
• 

  Official Solana MCP Serverofficial

  solana-foundation

  A

  license

  -Not graded

  quality

  B

  maintenance

  Enables AI agents to access and search up-to-date Solana documentation, get canonical spec references, and fix Anchor/Pinocchio Solana programs via MCP tools.

  Updated 4 days ago (2026-08-21 18:51 UTC)

  40

  80

  MIT

• CryptoTaxEdge

  sturs49

  F

  license

  -Not graded

  quality

  C

  maintenance

  US tax classification for on-chain transactions: tx hash in → canonical category, tax treatment, confidence, and review flags out. 80+ chains.

  Updated 7 days ago (2026-08-18 00:41 UTC)

• ADI Chain MCP Server

  idea404

  F

  license

  -Not graded

  quality

  A

  maintenance

  Enables AI agents to query and execute ADI Chain operations, including canonical bridge deposits/withdrawals, CCIP transfers, balance checks, and funding path planning.

  Updated 11 days ago (2026-08-14 13:10 UTC)
• 

  hashlock-mcpofficial

  Hashlock-Tech

  A

  license

  A

  quality

  A

  maintenance

  Hashlock Markets — sealed-bid intent-based crypto trading via MCP for AI agents. Atomic cross-chain settlement (Ethereum, Bitcoin, Sui) using HTLC. Six MCP tools for RFQ price discovery without information leakage and HTLC settlement without escrow or bridges. Canonical npm: @hashlock-tech/mcp.

  Updated 12 days ago (2026-08-13 15:46 UTC)

  13

  243

  MIT

• web3-docs

  dioptx

  A

  license

  A

  quality

  C

  maintenance

  Unifies 11 protocol specification repositories (EIPs, BIPs, CIPs, etc.) and canonical contract addresses across 10 chains into a local FTS5 index, enabling coding agents to retrieve exact spec text and contract addresses via natural language queries.

  Updated 4 months ago (2026-05-01 11:45 UTC)

  4

  21

  MIT

• Subgraph Registry MCP

  PaulieB14

  A

  license

  A

  quality

  A

  maintenance

  Agent-friendly semantic classification of all subgraphs on The Graph Network. Pre-computed index of 15,500+ subgraphs with domain classification, protocol type detection, schema fingerprinting, canonical entity mapping, and composite reliability scoring.

  Updated 4 days ago (2026-08-21 02:59 UTC)

  4

  370

  MIT
• 

  hashlock-mcp-serverofficial

  Hashlock-Tech

  A

  license

  A

  quality

  D

  maintenance

  Hashlock Markets (hashlock.markets) — sealed-bid intent-based crypto trading protocol with HTLC atomic settlement. AI agents can create, commit, and validate trading intents on Ethereum, Bitcoin, and Sui. Canonical npm package: @hashlock-tech/mcp. Not the cryptographic hashlock primitive, not Hashlock Pty Ltd (hashlock.com).

  Updated 4 months ago (2026-04-24 15:47 UTC)

  5

  21

  MIT