A side-by-side look at the AOTrust Notarization & Evidence Server and Horizon Shield MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose AOTrust Notarization & Evidence Server for cryptography work; choose Horizon Shield for cryptography over a hosted endpoint. You can also run both side by side in one mcpServers block.
get_price_range, audit_estimate, verify_fair_price.Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Cryptography | Cryptography |
| Quality signal | 33/100 · Emerging | 56/100 · Good |
| Install command | Not confirmed yet | Confirmed |
| Transport | — | Remote HTTP/SSE |
| Auth | Not declared | Not declared |
| Pricing | Not declared | Not declared |
| Required env vars | None listed | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 1 | 2 |
| Directory activity | 0 views 0 installs 0 upvotes | 1 views 0 installs 0 upvotes |
| Tools | Not listed | 29 |
| Full listing | View AOTrust Notarization & Evidence Server | View Horizon Shield |
No tool names declared yet. Check the project README from the listing page.
get_price_rangeReturns the fair price range (min, avg, max), the overcharge danger threshold, unit, price trend, and field notes for a Japanese construction or renovation job.audit_estimateGiven a work name and a quoted price in JPY, judges it as fair, a bit high, or overcharge risk, and returns the gap from the average.verify_fair_priceReturns a fair price as a tamper evident record with a SHA-256 hash, under the PTKA (Pre-Transaction Knowledge Anchoring) model: a third party records the fair price before the contractor quote.check_red_flagsChecks whether wording in an estimate or sales pitch matches known overcharge or high pressure tactics (lump sum, today only discount, free inspection, door to door). Language agnostic.get_estimate_reading_guideReturns universal principles for judging whether any estimate is honest: the overhead ratio, how to treat lump sum entries, how to spot pressure tactics. Language agnostic.list_cost_categoriesLists the construction and renovation work categories for which fair price ranges and red flags are maintained.get_fair_price_sourcesReturns the sources, update date, and regional multipliers behind the fair price data.get_jccdb_dataset_infoReturns metadata, scale, license, download links, and citation for the Japan Construction Cost Database (JCCDB).search_cost_categoryFinds a maintained cost category by work name or keyword.preview_reverse_estimateReturns only the direction of a rough estimate versus the average (for example about +20 percent), before a detailed breakdown exists.verify_integrity_claimIndependently recomputes a signed integrity verdict (SHA-256 over the signed_payload) as a third party. Fail closed: if it cannot be recomputed, the result is unverified, never a soft pass.create_ap2_fairness_attestationIssues a FairPriceAttestation shaped to attach to a Google AP2 (Agent Payments Protocol) Cart Mandate, so a fair price proof can ride alongside the payment authorization. Optional `quoted_price` adds a within / above / below verdict.Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
No confirmed install command for AOTrust Notarization & Evidence Server yet — follow the setup steps linked from its listing page rather than a guessed package name.
{
"mcpServers": {
"ogasurfproject-jpg-horizon-shield-3": {
"url": "https://mcp.horizonshield.dev/"
}
}
}