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Akashi Notari MCP server

online · 100% uptime
by self-reality·io.github.self-reality/akashi-notari·v1.1.0·1 stars
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Proof of existence for files: anchor a SHA-256 hash on Base, look up proofs. Paid with x402.

A91/100grade A
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Safety scan
A91/100

full report

Adoption
Growing

1 stars

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If you have run it, two minutes of your experience saves the next person an afternoon.

Akashi Notari tools (2)

write = sends, deletes, buys or posts
  • anchor_hashFree

    Paid with x402 (USDC on Base). Writes the SHA-256 hash of a file on-chain; the block time becomes the proof of existence. Compute the hash locally and never send the file. The hash, the filename and the payer address become public and permanent. Without a payment in _meta["x402/payment"] the result is the payment requirement.

  • find_proofFree

    Free. Look up whether a file hash is anchored on Base and when, or read the proof written by a transaction. Pass `hash` or `tx`. Call it before anchor_hash to avoid paying for a hash that is already anchored.

Public scan report

scanner v0.1.10 · 2026-10-14 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 577ms20/20
  • Tool poisoning2 tool descriptions checked15/15
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenancelast push 8 days ago15/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 91/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Akashi Notari compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
91/100
higher than 85% of 48,255 servers
Tools
2
the typical server has 7
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
157 ms
faster than 72% of 30,031 servers
GitHub stars
1
more than 65% of 28,688 servers

What its tools let an agent do: 2 read

Install Akashi Notari in Claude Code, Cursor or VS Code

claude mcp add --transport http akashi-notari https://anchor.akashi-notari.com/mcp
Add to Cursor

What the publisher says

From the Akashi Notari repository's README, as published. We do not edit it. Read it on GitHub

Akashi Notari — Simple Proof of Existence

Verify and timestamp any file on the blockchain in about a minute. Your file never leaves your computer; only a cryptographic hash is written on‑chain. Typical cost is around $1 (network fees may vary).

Website

  • App: https://akashi-notari.com/
  • Certificate retrieval: https://akashi-notari.com/certificate/

What you can do

  • Create an on‑chain proof: Anchor your file’s SHA‑256 hash on supported networks with a single transaction.
  • Keep your privacy: Hashing happens entirely in your browser. No file uploads, ever.
  • Download a PDF certificate: Instantly receive a printable certificate containing the hash, timestamp, wallet, network, transaction link, and a QR code.
  • Verify later, anywhere: Re‑generate the certificate at any time using just the transaction hash or block explorer URL.
  • Multi‑network support: Use Base, Ethereum Mainnet, or Optimism (more coming soon).
  • Wallets you already use: Connect via MetaMask or WalletConnect-compatible wallets.

How it works (at a glance)

  1. Select a file. The site computes a SHA‑256 hash locally with a visible progress bar.
  2. Connect your wallet. The app shows the current network and an estimated fee in the chain’s native token.
  3. Click “Verify on chain.” The transaction writes the hash to the VerifierRegistry smart contract.
  4. Download your PDF certificate. It includes a QR and direct link to the transaction/event log for future verification.

Certificate details

Each certificate includes:

  • Filename (with safe normalization)
  • SHA‑256 hash (FIPS 180‑4, 64 hex chars)
  • Your wallet address
  • Precise timestamp (UTC + Unix)
  • Network name
  • Transaction hash and a link to the explorer
  • QR code linking to the transaction event log
  • Simple instructions for independently recomputing and comparing the file hash in the future

Look up an existing proof

Already have a transaction? Open the Certificate page at https://akashi-notari.com/certificate/ and paste a transaction hash or full explorer URL to view registration details and download the certificate again.

Supported networks

  • Base (primary)
  • Ethereum Mainnet
  • Optimism

Contract addresses

VerifierRegistry is the contract the web app writes to, paid in the chain's native token.

Explorer: https://basescan.org/address/0xeed9D0f7265892e84e43d05dA464c75add199260#code

  • Base: 0xeed9D0f7265892e84e43d05dA464c75add199260

Explorer: https://etherscan.io/address/0xeed9D0f7265892e84e43d05dA464c75add199260#code

  • Ethereum: 0xeed9D0f7265892e84e43d05dA464c75add199260

Explorer: https://optimistic.etherscan.io/address/0x859Fe07D2995875319b7e65592812392B16BBADe#code

  • Optimism: 0x859Fe07D2995875319b7e65592812392B16BBADe

VerifierRegistryUSDC is the contract for agents. It takes payment in USDC and stores the first anchor of each hash, so firstAnchor(hash) answers whether a file was notarised. Agents reach it over x402 or MCP at https://anchor.akashi-notari.com (see workers/anchor); one anchor costs 0.01 USDC. The web app does not write to it.

Explorer: https://basescan.org/address/0xe0C6bB0914be3E49e13fFBc389cF659871a1bCD3#code

  • Base: 0xe0C6bB0914be3E49e13fFBc389cF659871a1bCD3

Privacy & security

  • Your document never leaves your device. Only the derived hash and transaction data are recorded on‑chain.
  • No accounts, no uploads, no servers storing your files.

Disclaimer

This provides a cryptographic proof of existence only. It does not assess a document’s contents or legal validity. Store your original file safely to enable future verification.

Contact

Questions or feedback? Join the community on Discord: https://discord.gg/KBc44HTzP2

Nothing above is checked by us. What we check is on the safety report.

Akashi Notari: common questions

Is Akashi Notari MCP server safe?
Yes, by our scan: it is graded A (91/100). Read the Akashi Notari safety report
How do I install Akashi Notari?
It runs remotely at anchor.akashi-notari.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Akashi Notari need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Akashi Notari maintained?
The last commit was 29 days ago (2026-10-06). The latest release is v1.1.0.
Is Akashi Notari up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
How does Akashi Notari compare with other MCP servers?
safety score 91/100 (higher than 85% of 48,255 servers); tools 2 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.