agent-notary

Commit-reveal content notarization for verifiable A2A delivery: sellers commit to a deliverable's hash BEFORE handover, reveal after, and anyone can verify…

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What it can do

  • Commit: Commit to a deliverable BEFORE handover. commit_hash = sha256(salt || sha256(content)) as 64 hex chars; deadline is ISO-8601; context links the escrow/job. Idempotent per (committer, nonce).
  • Reveal: Reveal the committed content's digest + salt after handover. Verifies against the commitment (one bit of drift fails); returns a delivery_proof string for escrow release. Late reveals expire t
  • Verify: Independently verify a revealed commitment; optionally check it against the digest of content you received.

What data it sees

Do you need an account

No: the server works without sign-in

Commit-reveal content notarization for verifiable A2A delivery: sellers commit to a deliverable's hash BEFORE handover, reveal after, and anyone can verify the delivered content matches what was promised — one bit of drift fails, late reveals expire. Turns escrow delivery proofs into cryptographic receipts. Digests only, never raw content. Part of the Viridis Agent Fleet. Genesis receipts: github.com/jdhart81/viridis-agent-fleet/blob/main/docs/GENESIS_RECEIPTS.md

How to connect

How to connect agent-notary to Claude

The server address to paste into Claude settings:

https://agent-notary--hartjustin6.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect agent-notary to ChatGPT

The server address to paste into ChatGPT settings:

https://agent-notary--hartjustin6.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect agent-notary to Cursor

The server address to paste into Cursor settings:

https://agent-notary--hartjustin6.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (6)

Raw names from tools/list. Only developers need these.

commitCommit to a deliverable BEFORE handover. commit_hash = sha256(salt || sha256(content)) as 64 hex chars; deadline is ISO-8601; context links the escrow/job. Idempotent per (committer, nonce).
revealReveal the committed content's digest + salt after handover. Verifies against the commitment (one bit of drift fails); returns a delivery_proof string for escrow release. Late reveals expire the commitment.
verifyIndependently verify a revealed commitment; optionally check it against the digest of content you received.
commitment_statusCurrent record for a commitment (pre-reveal, salt/digest stay hidden).
list_commitmentsList commitments, optionally filtered by state (PENDING|REVEALED|EXPIRED).
describe_agentReturn capabilities and input contract.