Witnessory
Post-quantum readiness of any website, PQC adoption figures, the probe map; paid checks via x402.
Install
Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).
witnessoryclaude mcp add witnessory -- uvx witnessory==0.2.4 mcp{
"mcpServers": {
"witnessory": {
"command": "uvx",
"args": [
"witnessory==0.2.4",
"mcp"
]
}
}
}Documentation
From the project's README on GitHub, refreshed weekly. Links open on GitHub.
Contents
Witnessory client
Witnessory measures how far the internet has moved to post-quantum cryptography. This is the client: the services as Python functions, a command line, and an MCP server so an agent can use them as tools. Standard library only; Apache 2.0.
pip install witnessoryFrom the command line
witnessory check example.org # one site's post-quantum readiness, in a sentence
witnessory check example.org --json # the whole signed result
witnessory headline # the observatory's headline figures, by layer
witnessory probes # where the probes measure from
witnessory status # whether every service is up
witnessory pricing # what is paid, and the pricesFrom Python
import witnessory
r = witnessory.check("example.org")
print(r["summary"]) # "example.org: a current browser gets post-quantum key exchange ..."
witnessory.verify(r) # {"ed25519": True, "mldsa65": True} (needs: pip install "witnessory[verify]")
witnessory.headline()["layers"]["keys"]As an MCP server, for agents
Command witnessory, argument mcp. For example, in a client's configuration:
{"mcpServers": {"witnessory": {"command": "witnessory", "args": ["mcp"]}}}Tools: check_site, pq_headline, probe_map, service_status, pricing. Resources: Witnessory's llms.txt and
pricing.json. Messages are JSON-RPC, one per line, on stdin and stdout.
Limits and keys
A free check is one vantage, once: 20 new checks an hour from one address, results reused for 10 minutes. A paid
plan's key (WITNESSORY_KEY, or --key) makes checks fresh and counted per month instead of per address. Every
answer carries offers: what more there is and where the prices are (https://witnessory.org/pricing.json). Watching
your own sites over time from several networks, with alerts and signed evidence, is a separate product on the same
page.
Paying per request, as an agent
No account is needed: GET https://api.witnessory.org/pay/check?domain=example.org answers 402 with what to pay
(x402 v2; USDC on Base), and any x402-capable client pays and resends. This client can pay too:
pip install "witnessory[pay]"
export WITNESSORY_PAY_KEY=0x... # a wallet holding a little USDC on Base
witnessory pay address # where to send the USDC
witnessory pay check example.org # $0.01, one fresh signed check
witnessory pay key api-developer # $19, a key for 2,000 fresh checks in 31 days -> WITNESSORY_KEYFrom code: witnessory.pay.check("example.org") and witnessory.pay.buy_key("api-developer"). As an MCP tool:
pay_check. Index of what is sold: https://api.witnessory.org/pay.
Terms: https://witnessory.org/terms.html. Privacy: https://witnessory.org/privacy.html. Contact: security@witnessory.org.
Frequently asked questions
What is Witnessory?
Post-quantum readiness of any website, PQC adoption figures, the probe map; paid checks via x402.
How do I install Witnessory?
It runs on your machine. In Claude Code: claude mcp add witnessory -- uvx witnessory==0.2.4 mcp. For other clients, paste the JSON configuration from this page into their MCP settings.
Does Witnessory need an API key?
Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.
Is Witnessory open source?
Yes. Its code is on GitHub under the Apache-2.0 license.
Who maintains Witnessory?
It is published by witnessory. AI.tn lists it but does not maintain or endorse it.
From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.