"Canonical" matching MCP servers:

Enables read-only access to the canonical-vault GitHub repository through MCP, letting clients list files, retrieve file contents and history, inspect commits, and search code.

MCP server giving agents canonical access to 180M+ US parcels with ownership, valuation, permits, deeds, hazard, and market data.

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.

Converts clinical blood-test results between conventional and SI units and resolves lab-marker names to canonical analytes.

Google Search Console for agents: search analytics by query, page, country, and device, plus a striking-distance report for queries ranking just off page one. Also lists, submits, and removes sitemaps and inspects URLs for index status, last crawl, and canonical.

Enables sending SMS, querying delivery reports, and managing senders and blacklists through the iletiMerkezi SMS API.

A read-only MCP server that exposes Automeli's public API documentation (v2 canonical, v1 frozen) to LLMs via fetch and cache over www.automeli.com artifacts. It enables listing, searching, and retrieving endpoints, OpenAPI specs, error explanations, code snippets, and end-to-end flow guides.

Enables AI apps using Model Context Protocol to access canonical Brazilian jogo do bicho and Loteria Federal data, including live results, groups, dream book, odds, history, and legal status.

Read-only MCP server that exposes a design system's tokens, components, conventions, and deprecations as queryable tools, enabling agents to look up canonical values, assess change impact, and detect hardcoded value drift.

Anchord MCP is a hosted remote MCP server for AI agents that need canonical identity resolution and safe write evaluation across customer systems. Resolve companies and people to canonical AnchorIDs, inspect linked records and target-system coverage, and evaluate whether a proposed write should be allowed or blocked. Read-only by design.

Repository-native protocol and MCP server for coordinating work items, documentation, changelogs, and project memory between humans and AI agents, using Markdown files in a Git repository as the canonical data source.

Enables privacy-aware, deterministic, read-only chat analysis through tools for briefs, aggregate interaction signals, evidence-aware claim audits, and canonical resource discovery.

Enables deterministic, read-only construction of Seedance-oriented video prompts, planning of multimodal reference-aware sequences, prompt diagnosis, and discovery of canonical See Dance 2 resources.

Enables searching a checked-in index of official Tauri 2 documentation through a read-only, stdio-based MCP tool, returning bounded results with titles, canonical URLs, sections, context, and version information.

A read-only, deterministic server that enables assembling copy-ready video prompts, planning timed shot sequences, diagnosing prompt clarity and current duration/resolution/reference/end-frame/audio limits, and retrieving canonical creation, guide, pricing, and policy URLs.

Provides read-only tools to build English or Chinese video prompts, plan reference-aware sequences, diagnose prompts, and fetch canonical SeeVido resources without API keys.

Cross-publishes a single markdown draft to 5 CMS platforms (dev.to, Hashnode, Ghost, WordPress, Medium) and 4 social networks (Bluesky, Mastodon, LinkedIn, X) from any MCP client, with built-in SEO scoring, schema.org JSON-LD, and canonical URL handling so cross-posts compound search rankings instead of competing.

Verified Kingdom Hearts merchandise database and MCP server. Resolves fuzzy listing titles (JP/EN) to canonical SKUs with official licensing status, MSRP-based pricing, availability, and data verification status for KH figures, apparel, accessories, and collectibles (JP and Western releases). Not a marketplace — data only.

Enables Claude and other MCP clients to read Google Search Console and Bing Webmaster Tools data, analyze query/page performance, compare periods, inspect indexing and canonical status, and retrieve sitemap and keyword statistics.

Enables users to cluster keyword lists, classify search intent, detect Google Search Console keyword cannibalization, score title tags and meta descriptions for CTR, and generate content briefs, all deterministically and locally from their own pasted data with no API key required. It also flags fixes such as canonical targets and merge actions for competing pages.