Client MCP Server

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 witnessory

From 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 prices

From 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_KEY

From 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.