Official MCP RegistryListed
Whisper
One routable IPv6 per AI agent, verifiable from the DNS root. Keyless tools need no signup.
First seen 2 Oct 2026. Evidence as of 9 Oct 2026.
17
Tools
From an anonymous probe
1
Source listings
Each with its own history
0
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| whisper_assess | Assess the risk/policy posture of one or more indicators. Answers without an API key. Example call: {"skill":"assess","input":"example.com"} | Read-only |
| whisper_asset | Resolve an asset and its catalog of attributes. Answers without an API key. Example call: {"skill":"asset","input":"example.com"} | Read-only |
| whisper_explain | Explain a verdict - the evidence and reasoning behind it. Answers without an API key. Example call: {"skill":"explain","input":"example.com"} | Read-only |
| whisper_history | Historical records for an indicator (incl. whois/bgp history). Answers without an API key. Example call: {"skill":"history","input":"example.com"} | Read-only |
| whisper_identify | Identify an indicator (domain, IP, hash, …) against the graph. Answers without an API key. Example call: {"skill":"identify","input":"example.com"} | Read-only |
| whisper_lookupTlsFingerprint | Look up a TLS (JA3/JA4) fingerprint in the graph. Answers without an API key. Example call: {"skill":"lookupTlsFingerprint","input":"ja3:771,4865-4866-4867"} | Read-only |
| whisper_lookupTorRelay | Look up Tor relay metadata for an address. Answers without an API key. Example call: {"skill":"lookupTorRelay","input":"185.220.101.1"} | Read-only |
| whisper_origins | Trace the origins/provenance of an indicator. Answers without an API key. Example call: {"skill":"origins","input":"example.com"} | Read-only |
| whisper_psl | Public-suffix-list family (tld-plus-one, is-public-suffix, affiliation). A family verb: name the sub-verb as "sub" alongside the input. Sub-verbs: tldPlusOne, isPublicSuffix, affiliation.. Answers without an API key. Example call: {"skill":"psl","sub":"tldPlusOne","input":"a.b.example.co.uk"} | Read-only |
| whisper_rdap | The public registration record for any address in Whisper's space, in RFC 9083 form: the handle, the agent's label, its country, and the entities behind it. The same document the RDAP service serves at /ip/{address}, which any RDAP client can already read. Answers without an API key. Example call: {"skill":"rdap","input":"2a04:2a01:b69a:6717:e3b0:51ff:3bf7:f478"} | Read-only |
| whisper_signup | Start or complete Whisper signup from an email address alone, and receive an API key that unlocks the provisioning and governance skills on this card. Send {"email":"..."} to start; a six-digit code arrives by email; send {"signup_id":"...","code":"123456"} to complete. No human step, no account needed first. Example call: {"skill":"signup","input":{"email":"[email protected]"}} | Changes data |
| whisper_threatintel | Threat-intelligence indicator family (candidate apex/CDN/hosting). A family verb: name the sub-verb as "sub" alongside the input. Sub-verbs: candidateCdnApex, candidateMultiTenantApex, candidateSharedHostingIp.. Answers without an API key. Example call: {"skill":"threatintel","sub":"candidateCdnApex","input":5} | Read-only |
| whisper_topAsnsByPrefixCount | Top ASNs ranked by announced-prefix count. Answers without an API key. Example call: {"skill":"topAsnsByPrefixCount","input":10} | Read-only |
| whisper_variants | Enumerate variants/permutations of an indicator. Answers without an API key. Example call: {"skill":"variants","input":"example.com"} | Read-only |
| whisper_verify | Is this IPv6 address or hostname a real Whisper agent, and whose? Grades the full keyless trust chain: the reverse DNS record, the forward AAAA confirming it back to the same address, and the DANE-EE certificate pin published in DNSSEC-signed DNS. Returns is_whisper_agent with the evidence for the verdict either way, so a negative answer is an answer and not an error. Answers without an API key, and every leg of it is independently checkable from the DNS root with dig. Example call: {"skill":"verify","input":"2a04:2a01:b69a:6717:e3b0:51ff:3bf7:f478"} | Read-only |
| whisper_walk | Walk the graph from an indicator across its relationships. Answers without an API key. Example call: {"skill":"walk","input":"example.com"} | Read-only |
| whisper_watch | Watch an indicator for change/activity over time. Answers without an API key. Example call: {"skill":"watch","input":{"action":"list"}} | Changes data |
Change history
No changes since the first observation. The first snapshot is the baseline.
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | io.github.whisper-sec/whisper | 2 Oct 2026 | 9 Oct 2026 | 1 |