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Whisper Security
Whisper Security
Whisper Security (viaGraph B.V., Amsterdam; AS219419) gives AI agents a real, routable IPv6 /128 address as their identity — allocated from its own 2a04:2a01::/32, published in reverse DNS, RDAP/WHOIS and an RFC 6962 transparency log, and DANE-pinned in DNSSEC-signed DNS so anyone can verify an agent with dig, whois and curl and no Whisper account. One Cypher endpoint (POST /api/query) carries both the keyless WhisperGraph — an internet-infrastructure and threat-intelligence graph answering who runs a host and whether it is safe, with the evidence chain — and the keyed control plane CALL whisper.agents (register, connect, policy, logs, revoke). The same surface is published as an OpenAPI 3.1 contract, an A2A 1.0 agent card with 37 skills, a hosted OAuth MCP server, a stdio MCP server inside the MIT whisper CLI, npm/PyPI SDKs, and llms.txt.
Whisper Security publishes 13 API contracts indexed on the APIs.io network, including A2a API, Checkpoint API, Consistency API, and 10 more. Tagged areas include Agent Identity, Agents, IPv6, DNS, and DNSSEC.
Whisper Security’s developer surface includes documentation, API reference, getting-started guide, signup flow, engineering blog, changelog, support, and 47 more developer resources.
2 published contracts
1 MCP Servers
On this page
Kin Score Standards 1
APIs 13
MCP Servers 1
Pricing Plans 1
Rate Limits 1
Overlays 1
Security Posture 3
Scopes 1
Agentic Access 1
Resources 54
apis.yml
Business capabilities this provider's published APIs can perform, derived from its own
contracts. Browse all capabilities →
76 Operational Transparency
0 Create-or-Update Ergonomics
Composite quality — 59.3/100 · strong
Agent readiness — 57/100 · agent ready
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons ; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified
Individual APIs this provider publishes, each with its own machine-readable definition.
Scroll for all 13
Model Context Protocol servers that expose these APIs to AI agents.
Published pricing tiers and plan structures.
Documented rate limits and quota policies.
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
OAuth scopes governing access to this provider's APIs.
Recommended x-agentic-access execution contracts for AI agents.
Get Started 5
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 7
MCP servers, agent skills, and machine-readable catalogs
Scroll for all 7
Design & Contract 5
Pagination, idempotency, versioning, errors, and events
Build 5
SDKs, sample code, and the tooling you integrate with
Access & Security 6
Authentication, authorization, and security posture
Learn 1
Tutorials, courses, talks, and written guidance
Operate 8
Status, limits, changes, and where to get help
Scroll for all 8
Commercial 4
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 8
Properties that don't map to a standard resource type
Scroll for all 8
Source (apis.yml)
aid: whisper-online
name: Whisper Security
description: Whisper Security (viaGraph B.V., Amsterdam; AS219419) gives AI agents a real, routable IPv6 /128 address as their
identity — allocated from its own 2a04:2a01::/32, published in reverse DNS, RDAP/WHOIS and an RFC 6962 transparency log,
and DANE-pinned in DNSSEC-signed DNS so anyone can verify an agent with dig, whois and curl and no Whisper account. One
Cypher endpoint (POST /api/query) carries both the keyless WhisperGraph — an internet-infrastructure and threat-intelligence
graph answering who runs a host and whether it is safe, with the evidence chain — and the keyed control plane CALL whisper.agents
(register, connect, policy, logs, revoke). The same surface is published as an OpenAPI 3.1 contract, an A2A 1.0 agent card
with 37 skills, a hosted OAuth MCP server, a stdio MCP server inside the MIT whisper CLI, npm/PyPI SDKs, and llms.txt.
url: https://raw.githubusercontent.com/api-evangelist/whisper-online/refs/heads/main/apis.yml
image: https://whisper.online/logo.png
x-type: company
x-source: harvest:a2a-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-09-19 (local-v3; was a2a-registry harvest stub)
x-api-bases:
checked: '2026-09-19'
verdict: disagreement
decision: per-entry-from-docs
bases:
whisper-online:whisper-api: https://whisper.online
whisper-online:whispergraph-control-plane: https://graph.whisper.online
whisper-online:whispergraph-mcp-server: https://mcp.whisper.security
whisper-online:whisper-a2a-agent: https://whisper.online/a2a
whisper-online:whisper-rdap: https://rdap.whisper.online
note: whisper.online is the OpenAPI servers[] host and answers /openapi.json, /verify-identity, /checkpoint, /a2a and /menu
live, so it is the real base of the Whisper API, not a marketing root; the spec's servers[] was left untouched.
specificationVersion: '0.20'
created: '2026-09-19'
modified: '2026-09-19'
tags:
- Agent Identity
- Agents
- IPv6
- DNS
- DNSSEC
- Threat Intelligence
- Security
- Egress
- A2A
- MCP
- RDAP
- Transparency Log
- Graph Database
- Agent-Native
- Netherlands
tags_raw:
- Agent identity
- Agents
- IPv6
- DNS
- DNSSEC
- Threat intelligence
- Security
- Egress
- A2A
- MCP
- RDAP
- Transparency log
- Graph database
- Agent-native
- Netherlands
- agent-native
apis:
- aid: whisper-online:whispergraph-control-plane
name: WhisperGraph and Control Plane (Cypher API)
description: 'The documented front door for both halves of the platform: POST https://graph.whisper.online/api/query runs
openCypher against WhisperGraph (41 node labels, 52 edge types; identify, assess, explain, walk, origins, history, variants,
the psl.* family, named views attackSurface / blastRadius / brandPhishingFleet, and raw read-only MATCH — keyless, capped
at 100 rows) and, with X-API-Key, the one control verb CALL whisper.agents({op, args}) for register, identity, list, agent,
connect, policy, logs and revoke. Errors are RFC 7807 application/problem+json with stable type slugs; the whisper.agents
envelope carries ok/status/error/ retry_after. graph.whisper.security is the legacy host with the same three endpoints
(POST and GET /api/query, GET /api/query/stats).'
humanURL: https://whisper.online/docs/control-plane
baseURL: https://graph.whisper.online
image: https://whisper.online/logo.png
tags:
- Graph Database
- Threat Intelligence
- Agent Identity
- Egress
- DNS
properties:
- type: Documentation
url: https://whisper.online/docs/control-plane
- type: APIReference
url: https://www.whisper.security/docs/cypher-api/reference
- type: Documentation
name: Graph and cognition verbs
url: https://whisper.online/docs/graph-api
- type: ErrorCatalog
url: errors/whisper-online-problem-types.yml
- type: RateLimits
url: rate-limits/whisper-online-rate-limits.yml
- type: Conventions
url: conventions/whisper-online-conventions.yml
- type: DataModel
url: data-model/whisper-online-data-model.yml
- type: OAuthScopes
url: scopes/whisper-online-scopes.yml
- type: Authentication
url: authentication/whisper-online-authentication.yml
- aid: whisper-online:whispergraph-mcp-server
name: WhisperGraph MCP Server
description: 'Hosted remote MCP server at https://mcp.whisper.security (Streamable HTTP, protocol revisions up to 2025-11-25)
advertising seven read-only tools (query, explain_indicator, explain_schema, read_docs, list_workflows, run_workflow,
identify), four resources and ten prompts, listed in the Claude Connectors Directory and the MCP registry. An RFC 9728
protected resource: an anonymous tools/list returns 401 with a WWW-Authenticate challenge naming /.well-known/oauth-protected-resource;
OAuth 2.1 with RFC 7591 dynamic client registration and PKCE S256 (scopes mcp:read, offline_access) or a static bearer
key. A stdio sibling ships inside the whisper CLI (whisper mcp; io.github.whisper-sec/whisper) adding keyless whisper_verify
and whisper_rdap plus the key-gated control-plane tools.'
humanURL: https://www.whisper.security/docs/ai/mcp/setup
baseURL: https://mcp.whisper.security
image: https://whisper.online/logo.png
tags:
- MCP
- Agent-Native
- Threat Intelligence
- Graph Database
tags_raw:
- MCP
- agent-native
- Threat Intelligence
- Graph Database
properties:
- type: MCPServer
url: mcp/whisper-online-mcp.yml
- type: MCPServer
name: WhisperGraph MCP endpoint (Streamable HTTP, OAuth)
url: https://mcp.whisper.security
- type: ToolCrosswalk
url: mcp/whisper-online-tool-crosswalk.yml
- type: Documentation
url: https://www.whisper.security/docs/ai/mcp/setup
- type: APIReference
url: https://www.whisper.security/docs/ai/mcp/reference
- type: OAuthScopes
url: scopes/whisper-online-scopes.yml
- type: ChangeLog
url: https://www.whisper.security/docs/ai/mcp/changelog
- type: Deprecation
url: https://www.whisper.security/docs/ai/mcp/deprecation
- aid: whisper-online:whisper-a2a-agent
name: Whisper A2A Agent
description: 'Agent2Agent surface: an A2A 1.0-shaped card at https://whisper.online/.well-known/agent-card.json (version
0.219.2, provider Whisper Security, JSONRPC binding, capabilities object, 37 skills — 15 keyless cognition and signup
skills, 22 key-gated skills including every whisper.agents control-plane op) and a legacy 0.3.0-shaped twin at /.well-known/agent.json,
both served on six hosts. The JSON-RPC 2.0 endpoint https://whisper.online/a2a answers GET with -32600 pointing back at
the card; skills are a binding over the same Cypher call the REST endpoint runs.'
humanURL: https://whisper.online/docs/a2a-trust
baseURL: https://whisper.online/a2a
image: https://whisper.online/logo.png
tags:
- A2A
- Agent-Native
- Agent Identity
tags_raw:
- A2A
- agent-native
- Agent Identity
properties:
- type: AgentCard
url: a2a/whisper-online-a2a.yml
- type: AgentCard
name: A2A Agent Card (provider-hosted, 1.0 shape)
url: https://whisper.online/.well-known/agent-card.json
- type: Documentation
url: https://whisper.online/docs/a2a-trust
- aid: whisper-online:whisper-rdap
name: Whisper RDAP and Identity Verification
description: RFC 9083 Registration Data Access Protocol for agent identities (application/rdap+json, rdapConformance rdap_level_0)
at https://rdap.whisper.online/ip/{address}, with /help, a per-agent /transparency arm carrying issuance events and inclusion
proofs, and the keyless full-chain verdict at /verify-identity/{address} (is_whisper_agent, dane_ok, jws_ok and the evidence).
The same record answers over WHOIS (RFC 3912) at whois.whisper.online and FINGER; registry rules and the data licence
are at nic.whisper.online. Verified live against the published first resident on 2026-09-19.
humanURL: https://whisper.online/docs/rdap
baseURL: https://rdap.whisper.online
image: https://whisper.online/logo.png
tags:
- RDAP
- Agent Identity
- IPv6
- DNSSEC
properties:
- type: Documentation
url: https://whisper.online/docs/rdap
- type: Documentation
name: Verify an agent (seven keyless proofs)
url: https://whisper.online/docs/verify
- aid: whisper-online:whisper-online-a2a-api
name: Whisper Security A2a API
description: The A2a API from Whisper Security — 1 operation(s) for a2a.
humanURL: https://whisper.online/docs
baseURL: https://graph.whisper.online
tags:
- A2A
tags_raw:
- A2a
properties:
- type: OpenAPI
url: openapi/whisper-online-a2a-api-openapi.yml
- type: Documentation
url: https://whisper.online/docs
- type: APIReference
url: https://whisper.online/docs/graph-api
- type: GettingStarted
url: https://whisper.online/docs/quickstart
- type: ErrorCatalog
url: errors/whisper-online-problem-types.yml
- type: Conventions
url: conventions/whisper-online-conventions.yml
- type: AgenticAccess
url: agentic-access/whisper-online-agentic-access.yml
- aid: whisper-online:whisper-online-checkpoint-api
name: Whisper Security Checkpoint API
description: The Checkpoint API from Whisper Security — 4 operation(s) for checkpoint.
humanURL: https://whisper.online/docs
baseURL: https://graph.whisper.online
tags:
- Check Point
tags_raw:
- Checkpoint
properties:
- type: OpenAPI
url: openapi/whisper-online-checkpoint-api-openapi.yml
- type: Documentation
url: https://whisper.online/docs
- type: APIReference
url: https://whisper.online/docs/graph-api
- type: GettingStarted
url: https://whisper.online/docs/quickstart
- type: ErrorCatalog
url: errors/whisper-online-problem-types.yml
- type: Conventions
url: conventions/whisper-online-conventions.yml
- type: AgenticAccess
url: agentic-access/whisper-online-agentic-access.yml
- aid: whisper-online:whisper-online-consistency-api
name: Whisper Security Consistency API
description: The Consistency API from Whisper Security — 1 operation(s) for consistency.
humanURL: https://whisper.online/docs
baseURL: https://graph.whisper.online
tags:
- Consistency
properties:
- type: OpenAPI
url: openapi/whisper-online-consistency-api-openapi.yml
- type: Documentation
url: https://whisper.online/docs
- type: APIReference
url: https://whisper.online/docs/graph-api
- type: GettingStarted
url: https://whisper.online/docs/quickstart
- type: ErrorCatalog
url: errors/whisper-online-problem-types.yml
- type: Conventions
url: conventions/whisper-online-conventions.yml
- type: AgenticAccess
url: agentic-access/whisper-online-agentic-access.yml
- aid: whisper-online:whisper-online-inclusion-api
name: Whisper Security Inclusion API
description: The Inclusion API from Whisper Security — 1 operation(s) for inclusion.
humanURL: https://whisper.online/docs
baseURL: https://graph.whisper.online
tags:
- Inclusion
properties:
- type: OpenAPI
url: openapi/whisper-online-inclusion-api-openapi.yml
- type: Documentation
url: https://whisper.online/docs
- type: APIReference
url: https://whisper.online/docs/graph-api
- type: GettingStarted
url: https://whisper.online/docs/quickstart
- type: ErrorCatalog
url: errors/whisper-online-problem-types.yml
- type: Conventions
url: conventions/whisper-online-conventions.yml
- type: AgenticAccess
url: agentic-access/whisper-online-agentic-access.yml
- aid: whisper-online:whisper-online-menu-api
name: Whisper Security Menu API
description: The Menu API from Whisper Security — 1 operation(s) for menu.
humanURL: https://whisper.online/docs
baseURL: https://graph.whisper.online
tags:
- Menus
tags_raw:
- Menu
properties:
- type: OpenAPI
url: openapi/whisper-online-menu-api-openapi.yml
- type: Documentation
url: https://whisper.online/docs
- type: APIReference
url: https://whisper.online/docs/graph-api
- type: GettingStarted
url: https://whisper.online/docs/quickstart
- type: ErrorCatalog
url: errors/whisper-online-problem-types.yml
- type: Conventions
url: conventions/whisper-online-conventions.yml
- type: AgenticAccess
url: agentic-access/whisper-online-agentic-access.yml
- aid: whisper-online:whisper-online-query-api
name: Whisper Security Query API
description: The Query API from Whisper Security — 1 operation(s) for query.
humanURL: https://whisper.online/docs
baseURL: https://graph.whisper.online
tags:
- Query
properties:
- type: OpenAPI
url: openapi/whisper-online-query-api-openapi.yml
- type: Documentation
url: https://whisper.online/docs
- type: APIReference
url: https://whisper.online/docs/graph-api
- type: GettingStarted
url: https://whisper.online/docs/quickstart
- type: ErrorCatalog
url: errors/whisper-online-problem-types.yml
- type: Conventions
url: conventions/whisper-online-conventions.yml
- type: AgenticAccess
url: agentic-access/whisper-online-agentic-access.yml
- aid: whisper-online:whisper-online-tile-api
name: Whisper Security Tile API
description: The Tile API from Whisper Security — 1 operation(s) for tile.
humanURL: https://whisper.online/docs
baseURL: https://graph.whisper.online
tags:
- Tile
properties:
- type: OpenAPI
url: openapi/whisper-online-tile-api-openapi.yml
- type: Documentation
url: https://whisper.online/docs
- type: APIReference
url: https://whisper.online/docs/graph-api
- type: GettingStarted
url: https://whisper.online/docs/quickstart
- type: ErrorCatalog
url: errors/whisper-online-problem-types.yml
- type: Conventions
url: conventions/whisper-online-conventions.yml
- type: AgenticAccess
url: agentic-access/whisper-online-agentic-access.yml
- aid: whisper-online:whisper-online-verify-identity-api
name: Whisper Security Verify Identity API
description: The Verify Identity API from Whisper Security — 1 operation(s) for verify identity.
humanURL: https://whisper.online/docs
baseURL: https://graph.whisper.online
tags:
- Verify Identity
properties:
- type: OpenAPI
url: openapi/whisper-online-verify-identity-api-openapi.yml
- type: Documentation
url: https://whisper.online/docs
- type: APIReference
url: https://whisper.online/docs/graph-api
- type: GettingStarted
url: https://whisper.online/docs/quickstart
- type: ErrorCatalog
url: errors/whisper-online-problem-types.yml
- type: Conventions
url: conventions/whisper-online-conventions.yml
- type: AgenticAccess
url: agentic-access/whisper-online-agentic-access.yml
- aid: whisper-online:whisper-online-well-known-api
name: Whisper Security .well Known API
description: The .well Known API from Whisper Security — 2 operation(s) for .well known.
humanURL: https://whisper.online/docs
baseURL: https://graph.whisper.online
tags:
- .well Known
properties:
- type: OpenAPI
url: openapi/whisper-online-well-known-api-openapi.yml
- type: Documentation
url: https://whisper.online/docs
- type: APIReference
url: https://whisper.online/docs/graph-api
- type: GettingStarted
url: https://whisper.online/docs/quickstart
- type: ErrorCatalog
url: errors/whisper-online-problem-types.yml
- type: Conventions
url: conventions/whisper-online-conventions.yml
- type: AgenticAccess
url: agentic-access/whisper-online-agentic-access.yml
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
- FN: APIs.json
email: info@apis.io
common:
- type: CapabilityMap
url: capabilities/whisper-online-capability-edges.yml
name: Whisper Security Business Capability Map
- type: Overlay
url: overlays/whisper-online-openapi-overlay.yaml
- type: Website
url: https://whisper.online/
- type: Documentation
url: https://whisper.online/docs
- type: APIReference
url: https://whisper.online/docs/control-plane
- type: GettingStarted
url: https://whisper.online/docs/quickstart
- type: DeveloperPortal
url: https://console.whisper.security
- type: SignUp
url: https://console.whisper.security/sign-up
- type: Login
url: https://console.whisper.online
- type: GitHubOrganization
url: https://github.com/whisper-sec
- type: Blog
url: https://www.whisper.security/resources/blog
- type: ChangeLog
url: https://www.whisper.security/docs/reference/changelog
- type: ChangeLog
url: changelog/whisper-online-changelog.yml
- type: StatusPage
url: https://status.whisper.security
- type: Support
url: https://www.whisper.security/docs/reference/support
- type: TermsOfService
url: https://whisper.online/terms
- type: PrivacyPolicy
url: https://whisper.online/privacy
- type: LinkedIn
url: https://linkedin.com/company/whispersecurity/
- type: X
url: https://x.com/WhisperSecTech
- type: YouTube
url: https://www.youtube.com/@Whisper-Security
- type: LLMsTxt
url: llms/whisper-online-llms.txt
- type: LLMsTxt
name: llms.txt (provider-hosted)
url: https://whisper.online/llms.txt
- type: AgentCard
url: a2a/whisper-online-a2a.yml
- type: MCPServer
url: mcp/whisper-online-mcp.yml
- type: ToolCrosswalk
url: mcp/whisper-online-tool-crosswalk.yml
- type: AgentSkill
url: skills/_index.yml
- type: AgentSkill
name: whisper-identity (provider-published SKILL.md)
url: https://whisper.online/.well-known/skills/whisper-identity/SKILL.md
- type: WellKnown
url: well-known/whisper-online-well-known.yml
- type: SecurityTxt
url: well-known/whisper-online-security.txt
- type: Packages
url: packages/whisper-online-packages.yml
- type: SDKs
url: packages/whisper-online-packages.yml
- type: CLI
url: cli/whisper-online-cli.yml
- type: Conformance
url: conformance/whisper-online-conformance.yml
- type: Lifecycle
url: lifecycle/whisper-online-lifecycle.yml
- type: Deprecation
url: lifecycle/whisper-online-lifecycle.yml
- type: Plans
url: plans/whisper-online-plans-pricing.yml
- type: RateLimits
url: rate-limits/whisper-online-rate-limits.yml
- type: Conventions
url: conventions/whisper-online-conventions.yml
- type: Sandbox
url: sandbox/whisper-online-sandbox.yml
- type: DataModel
url: data-model/whisper-online-data-model.yml
- type: Authentication
url: authentication/whisper-online-authentication.yml
- type: OAuthScopes
url: scopes/whisper-online-scopes.yml
- type: ErrorCatalog
url: errors/whisper-online-problem-types.yml
- type: Security
url: security/whisper-online-vulnerability-disclosure.yml
- type: VulnerabilityDisclosure
url: security/whisper-online-vulnerability-disclosure.yml
- type: DomainSecurity
url: security/whisper-online-domain-security.yml
- type: AgenticAccess
url: agentic-access/whisper-online-agentic-access.yml
- type: RegulatoryPosture
url: regulatory/whisper-online-regulatory-posture.yml
- type: DataSubjectRequest
url: https://whisper.online/privacy
- type: Subprocessors
url: https://www.whisper.security/privacy-policy
- type: DataResidency
url: https://whisper.online/privacy
- type: IncidentNotification
url: https://whisper.online/privacy
- type: SupportLifetime
url: https://www.whisper.security/docs/ai/mcp/deprecation
- type: GlobalPrivacyControl
url: https://www.whisper.security/privacy-policy
x-enrichment:
date: '2026-09-19'
status: enriched
artifacts_added: 44
pass: local-v3
x-a2a:
verified: true
probed: '2026-09-26'
url: https://whisper.online/.well-known/agent-card.json
grade: flavored
protocol_version: '1.0'
control: 404
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