FluxProof

Monitor public pricing, policy and changelog pages with source hashes, timestamps, text diffs and signed webhooks.

CommunityOnlineNo sign-inGlobalFreeRead-only

What it can do

  • Fluxproof Preflight: Fetch a public URL and return fetchability, size, final URL, title, and content hash without page content or payment.
  • Fluxproof Offer: Return free and paid boundaries and purchase routes without charging.
  • Fluxproof Create Monitor: Create a monitor using a buyer-owned FluxProof API key.

What data it sees

Do you need an account

No: the server works without sign-in

Monitor public pricing, policy and changelog pages with source hashes, timestamps, text diffs and signed webhooks. Free: one daily monitor for 30 days. Paid: $9 once for 30 days, five monitors at 15-minute intervals, 15,000 checks, change history and webhooks. Run fluxproof_preflight before buying. Get a free key from the website; authenticated tools take your buyer-owned api_key argument, so protect tool logs. Public HTML/text/JSON/XML only, up to 3 MB; no JavaScript rendering, login bypass or native email/SMS. Hosted commercial service; engine and source stay private.

How to connect

How to connect FluxProof to Claude

The server address to paste into Claude settings:

https://fluxproof--neoaethel.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 FluxProof to ChatGPT

The server address to paste into ChatGPT settings:

https://fluxproof--neoaethel.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 FluxProof to Cursor

The server address to paste into Cursor settings:

https://fluxproof--neoaethel.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 (5)

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

fluxproof_preflightFetch a public URL and return fetchability, size, final URL, title, and content hash without page content or payment.
fluxproof_offerReturn free and paid boundaries and purchase routes without charging.
fluxproof_create_monitorCreate a monitor using a buyer-owned FluxProof API key.
fluxproof_check_nowRun a monitor now and return a source- and hash-bound change receipt.
fluxproof_list_changesList recent evidence receipts for a monitor.