NameWhisper

Name Whisper is an ENS (Ethereum Name Service) intelligence layer built for AI agents: natural-language search across 3.5M indexed .eth names, three-track valuation, live market data, wallet portfolios, and non-custodial transaction building for registration, renewal, Seaport listings and offers, resolver records, NameWrapper operations and ERC-8004 / ENSIP-25 agent identity. Everything is exposed as a public, anonymous remote MCP server at https://namewhisper.ai/mcp (44 tools, streamable-http, on the MCP Registry as ai.namewhisper/ens-tools) and an A2A 0.3.0 agent at https://namewhisper.ai/a2a, described by an agent card, an MCP server card, RFC 8414 / 9728 auth metadata, an RFC 9727 api-catalog, an llms.txt and provider-published Agent Skills. Identity is opt-in ERC-8128 signed requests; x402 and MPP payments are wired but dormant. The service never holds keys - every mutating tool returns unsigned calldata for the caller's wallet. No OpenAPI is published for the REST twins.

NameWhisper is listed with 3 APIs on the APIs.io network. Tagged areas include ENS, Ethereum, Web3, Domain Names, and AI Agents.

NameWhisper’s developer surface includes documentation, getting-started guide, API reference, pricing, support, authentication, changelog, and 27 more developer resources.

🌐 Visit website 📡 Source on GitHub

41.4/100 developing ▬ flat Agent 42/100 agent ready Front door AI 3/6 light Full breakdown ↓
scored 2026-10-09 · rubric v0.23.0

3 APIs 1 MCP Servers

ENS Ethereum Web3 Domain Names AI Agents MCP A2A ValuationNFT MarketplaceAgent Identity Blockchain

Kin Score

Kin Score How this is scored →
scored 2026-10-09 · rubric v0.23.0

Composite quality — 41.4/100 · developing

Contract Quality 0.0 / 21

Developer Ergonomics 8.9 / 17

Access Clarity 8.9 / 17

Operational Transparency 5.5 / 11

Contract Governance 1.9 / 10

Discoverability 6.8 / 9

Regulatory Posture 6.0 / 15

Agent readiness — 42/100 · agent ready

Machine-Readable Contract 0 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/namewhisper-ai: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

Name Whisper MCP Server

Public, anonymous remote MCP server (streamable-http, session header mcp-session-id) exposing 44 tools over ENS names - 19 free read tools for search, valuation, market activity...

Name Whisper A2A Agent

The agent-to-agent surface: an anonymous A2A 0.3.0 JSON-RPC endpoint at https://namewhisper.ai/a2a whose agent card (served at both /.well-known/agent-card.json and the legacy /...

Name Whisper REST API

The REST twins of the MCP tools. The docs state "All MCP tools have equivalent REST endpoints under /api/*. The JSON shapes are the same" and the guide says to POST JSON bodies ...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

NameWhisper MCP Server

Name Whisper operates a public, anonymous remote MCP server at https://namewhisper.ai/mcp (streamable-http, session header mcp-session-id) exposing 44 tools over ENS names: sear...

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Namewhisper Ai Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Namewhisper Ai Rate Limits

2 limits

RATE LIMITS

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Namewhisper Ai Authentication

none/erc8128-signed-request/oauth2-metadata · 4 schemes

SECURITY

Namewhisper Ai Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Namewhisper Ai Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Namewhisper Ai Scopes

2 scopes · erc8128_signed_request

2 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Namewhisper Ai Agentic Access

44 operations · 25 acting · 18 human-in-the-loop

44 operations · 25 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

X-MCPRegistryListing

X-MCPRegistryListing

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

MCPServer

LLMsTxt

AgentSkill

AgenticAccess

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

Conformance

Lifecycle

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

Access & Security 6

Authentication, authorization, and security posture

SecurityTxt

Authentication

OAuthScopes

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

Operate 3

Status, limits, changes, and where to get help

Support

Support

RateLimits

RateLimits

ChangeLog

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

Company 2

The organization behind the API

Website

Website

Twitter

Twitter

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

APICatalog

APICatalog

X-RegulatoryPosture

X-RegulatoryPosture

Source (apis.yml)

aid: namewhisper-ai
name: NameWhisper
description: 'Name Whisper is an ENS (Ethereum Name Service) intelligence layer built for AI agents: natural-language search
  across 3.5M indexed .eth names, three-track valuation, live market data, wallet portfolios, and non-custodial transaction
  building for registration, renewal, Seaport listings and offers, resolver records, NameWrapper operations and ERC-8004 /
  ENSIP-25 agent identity. Everything is exposed as a public, anonymous remote MCP server at https://namewhisper.ai/mcp (44
  tools, streamable-http, on the MCP Registry as ai.namewhisper/ens-tools) and an A2A 0.3.0 agent at https://namewhisper.ai/a2a,
  described by an agent card, an MCP server card, RFC 8414 / 9728 auth metadata, an RFC 9727 api-catalog, an llms.txt and
  provider-published Agent Skills. Identity is opt-in ERC-8128 signed requests; x402 and MPP payments are wired but dormant.
  The service never holds keys - every mutating tool returns unsigned calldata for the caller''s wallet. No OpenAPI is published
  for the REST twins.'
image: https://namewhisper.ai/favicon-512.png
url: https://raw.githubusercontent.com/api-evangelist/namewhisper-ai/refs/heads/main/apis.yml
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)
specificationVersion: '0.20'
created: '2026-09-19'
modified: '2026-09-19'
tags:
- ENS
- Ethereum
- Web3
- Domain Names
- AI Agents
- MCP
- A2A
- Valuation
- NFT Marketplace
- Agent Identity
- Blockchain
apis:
- aid: namewhisper-ai:namewhisper-mcp-server
  name: Name Whisper MCP Server
  description: Public, anonymous remote MCP server (streamable-http, session header mcp-session-id) exposing 44 tools over
    ENS names - 19 free read tools for search, valuation, market activity, expiring names, wash-trade checks, portfolios,
    agent reputation and ENS knowledge, and 25 transaction tools that build unsigned Ethereum calldata for registration, renewal,
    Seaport listings/offers/sweeps, transfers, resolver records, NameWrapper fuses and subnames, and ERC-8004 agent registration.
    tools/list answers anonymously with a full JSON Schema inputSchema and readOnly/destructive/idempotent annotations per
    tool; ERC-8128 request signing is optional; x402/MPP payments are dormant. Listed on the official MCP Registry as ai.namewhisper/ens-tools
    v1.2.0.
  image: https://namewhisper.ai/favicon-512.png
  humanURL: https://namewhisper.ai/docs
  baseURL: https://namewhisper.ai/mcp
  tags:
  - MCP
  - ENS
  - Valuation
  - NFT Marketplace
  - Agent Identity
  properties:
  - type: Documentation
    url: https://namewhisper.ai/docs
  - type: GettingStarted
    url: https://namewhisper.ai/guide
  - type: APIReference
    url: https://namewhisper.ai/llms-full.txt
  - type: MCPServer
    url: mcp/namewhisper-ai-mcp.yml
  - type: X-MCPToolsList
    url: mcp/namewhisper-ai-mcp-tools-list.json
  - type: Authentication
    url: authentication/namewhisper-ai-authentication.yml
  - type: OAuthScopes
    url: scopes/namewhisper-ai-scopes.yml
  - type: Conventions
    url: conventions/namewhisper-ai-conventions.yml
  - type: Idempotency
    url: conventions/namewhisper-ai-conventions.yml
  - type: ErrorCatalog
    url: errors/namewhisper-ai-problem-types.yml
  - type: RateLimits
    url: rate-limits/namewhisper-ai-rate-limits.yml
  - type: Plans
    url: plans/namewhisper-ai-plans-pricing.yml
  - type: Conformance
    url: conformance/namewhisper-ai-conformance.yml
  - type: Lifecycle
    url: lifecycle/namewhisper-ai-lifecycle.yml
  - type: AgentSkill
    url: skills/_index.yml
  - type: AgenticAccess
    url: agentic-access/namewhisper-ai-agentic-access.yml
  overlays: []
- aid: namewhisper-ai:namewhisper-a2a-agent
  name: Name Whisper A2A Agent
  description: 'The agent-to-agent surface: an anonymous A2A 0.3.0 JSON-RPC endpoint at https://namewhisper.ai/a2a whose agent
    card (served at both /.well-known/agent-card.json and the legacy /.well-known/agent.json) declares 44 skills mirroring
    the MCP tools one-for-one, preferredTransport JSONRPC, and no streaming, push notifications or task history. message/send
    answered a natural-language availability question live with a Message result; tasks/get is unimplemented. Graded conformant
    against A2A 1.0.0 in a2a/namewhisper-ai-a2a.yml.'
  image: https://namewhisper.ai/favicon-512.png
  humanURL: https://namewhisper.ai/agents
  baseURL: https://namewhisper.ai/a2a
  tags:
  - A2A
  - ENS
  - AI Agents
  - JSON-RPC
  properties:
  - type: Documentation
    url: https://namewhisper.ai/agents
  - type: AgentCard
    url: a2a/namewhisper-ai-a2a.yml
  - type: Authentication
    url: authentication/namewhisper-ai-authentication.yml
  - type: Conventions
    url: conventions/namewhisper-ai-conventions.yml
  - type: ErrorCatalog
    url: errors/namewhisper-ai-problem-types.yml
  - type: Conformance
    url: conformance/namewhisper-ai-conformance.yml
  overlays: []
- aid: namewhisper-ai:namewhisper-rest-api
  name: Name Whisper REST API
  description: The REST twins of the MCP tools. The docs state "All MCP tools have equivalent REST endpoints under /api/*.
    The JSON shapes are the same" and the guide says to POST JSON bodies matching the MCP tool parameter schema; the agents
    page counts "120+ REST endpoints". No path list, reference or OpenAPI is published, robots.txt disallows /api/ to crawlers,
    and GET https://namewhisper.ai/api answers an x402 402 payment-discovery body that points back at the MCP endpoint. Recorded
    as the provider describes it; there is no machine-readable contract for this surface and none is derived here.
  image: https://namewhisper.ai/favicon-512.png
  humanURL: https://namewhisper.ai/docs
  baseURL: https://namewhisper.ai/api
  tags:
  - REST
  - ENS
  - Undocumented
  properties:
  - type: Documentation
    url: https://namewhisper.ai/docs
  - type: Authentication
    url: authentication/namewhisper-ai-authentication.yml
  - type: Conventions
    url: conventions/namewhisper-ai-conventions.yml
  - type: ErrorCatalog
    url: errors/namewhisper-ai-problem-types.yml
  overlays: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://namewhisper.ai/
- type: Documentation
  url: https://namewhisper.ai/docs
- type: GettingStarted
  url: https://namewhisper.ai/guide
- type: APIReference
  url: https://namewhisper.ai/llms-full.txt
- type: Pricing
  url: https://namewhisper.ai/guide#fees
- type: TermsOfService
  url: https://namewhisper.ai/terms
- type: PrivacyPolicy
  url: https://namewhisper.ai/privacy
- type: Support
  url: https://x.com/namewhisper_ai
- type: Twitter
  url: https://x.com/namewhisper_ai
- type: GitHubOrganization
  url: https://github.com/eggybug42069
- type: X-MCPRegistryListing
  url: https://registry.modelcontextprotocol.io/v0/servers?search=namewhisper
- type: AgentCard
  url: a2a/namewhisper-ai-a2a.yml
- type: MCPServer
  url: mcp/namewhisper-ai-mcp.yml
- type: LLMsTxt
  url: llms/namewhisper-ai-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/namewhisper-ai-agentic-access.yml
- type: WellKnown
  url: well-known/namewhisper-ai-well-known.yml
- type: SecurityTxt
  url: well-known/namewhisper-ai-security.txt
- type: APICatalog
  url: well-known/namewhisper-ai-api-catalog.json
- type: Authentication
  url: authentication/namewhisper-ai-authentication.yml
- type: OAuthScopes
  url: scopes/namewhisper-ai-scopes.yml
- type: Conventions
  url: conventions/namewhisper-ai-conventions.yml
- type: Idempotency
  url: conventions/namewhisper-ai-conventions.yml
- type: ErrorCatalog
  url: errors/namewhisper-ai-problem-types.yml
- type: RateLimits
  url: rate-limits/namewhisper-ai-rate-limits.yml
- type: Plans
  url: plans/namewhisper-ai-plans-pricing.yml
- type: Conformance
  url: conformance/namewhisper-ai-conformance.yml
- type: Lifecycle
  url: lifecycle/namewhisper-ai-lifecycle.yml
- type: ChangeLog
  url: changelog/namewhisper-ai-changelog.yml
- type: Packages
  url: packages/namewhisper-ai-packages.yml
- type: DomainSecurity
  url: security/namewhisper-ai-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/namewhisper-ai-vulnerability-disclosure.yml
- type: Security
  url: https://namewhisper.ai/.well-known/security.txt
- type: X-RegulatoryPosture
  url: regulatory/namewhisper-ai-regulatory-posture.yml
x-enrichment:
  date: '2026-09-19'
  status: enriched
  artifacts_added: 35
  pass: local-v3
x-a2a:
  verified: true
  probed: '2026-09-26'
  url: https://namewhisper.ai/.well-known/agent-card.json
  grade: conformant
  protocol_version: 0.3.0
  control: 404

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