FluxProof
Evidence-bearing public webpage monitoring with hashes, diffs, signed webhooks, REST, and MCP.
Connect it
Settings → Connectors → Add custom connector
URL: https://fluxproof.tryneverclosed.com/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://fluxproof.tryneverclosed.com/mcp{
"mcpServers": {
"fluxproof": {
"url": "https://fluxproof.tryneverclosed.com/mcp"
}
}
}claude mcp add --transport http fluxproof https://fluxproof.tryneverclosed.com/mcp{
"servers": {
"fluxproof": {
"type": "http",
"url": "https://fluxproof.tryneverclosed.com/mcp"
}
}
}6 tools, verified live
fluxproof_preflightread-onlyFetch a public URL and return fetchability, size, final URL, title, and content hash without page content or payment. How it works: given one public page address, FluxProof fetches it once and says whether it can watch it; nothing is created or charged. Example: {"url":"https://example.com/"}.
fluxproof_get_free_keyCreate a free FluxProof API key: one page, checked daily, for 30 days, no card. One per network per month. The key is returned once and is a secret credential.
fluxproof_offerread-onlyReturn free and paid boundaries and purchase routes without charging. Returns the free daily plan, the $9 paid pass (30 days paid once; when offered, also $9 a month through the human checkout, cancel any time), the human checkout link and the agent payment route. Example: {}. Reading the offer charges nothing.
fluxproof_create_monitorCreate a monitor using a buyer-owned FluxProof API key. Creates persistent state and performs a baseline check, consuming quota. Not idempotent: each call creates a new monitor.
fluxproof_check_nowRun a monitor now and return a source- and hash-bound change receipt. Consumes check quota, stores a receipt and may deliver a configured webhook. Not an idempotent read.
fluxproof_list_changesread-onlyList recent evidence receipts for a monitor.
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