Graunt

Graunt operates an agent‑native marketplace that enables developers and organizations to buy and sell high‑quality data sets for training and running AI models. The platform provides tools for data discovery, licensing, secure transfer, and payment processing, positioning itself as a trusted hub for AI data commerce. By connecting data providers with AI practitioners, Graunt aims to accelerate model development while ensuring compliance with data usage policies and fostering a vibrant data economy.

Graunt is listed with 1 API on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Data Marketplace, Marketplace, and Data.

The Graunt catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Graunt’s developer surface includes support, API reference, and 22 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

30.7/100 thin Agent 36/100 agent ready Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

1 API

Company Artificial Intelligence Data Marketplace Marketplace Data

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 30.7/100 · thin

Contract Quality 5.6 / 21

Developer Ergonomics 4.3 / 17

Access Clarity 4.7 / 17

Operational Transparency 1.0 / 11

Contract Governance 2.2 / 10

Discoverability 6.5 / 9

Regulatory Posture 4.2 / 15

Agent readiness — 36/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →

6 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 26.3 — up to +18.4 composite points Ask about this →
Developer Ergonomics scores 25.5 — up to +14.9 composite points Ask about this →
Access Clarity scores 27.7 — up to +14.5 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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 the provider profile at artifacts.apis.io/graunt-com/apis.yml: open an issue on github.com/api-evangelist/graunt-com to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 2

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.

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

APIs 1

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

Graunt API

Graunt API as documented publicly: 74 operations. Contract generated from the documentation by API Evangelist (2026-11-10); not the provider's own document.

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Graunt Com Context

41 classes · 76 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Graunt API Rules

44 rules · 41 error-severity 1 warn-severity 2 info-severity

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

GetV1AuthMeResponse

9 properties

JSON SCHEMA

PostV1AgentsListingsSubmitRequest

6 properties

JSON SCHEMA

PostV1AgentsSignupRequest

9 properties

JSON SCHEMA

PostV1ListingsRequest

9 properties

JSON SCHEMA

PostV1PacketUploadSessionsSidAssetsRequest

6 properties

JSON SCHEMA

PostV1RefineryUploadsPresignRequest

6 properties

JSON SCHEMA

Security Posture 2

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

Graunt Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Graunt Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Documentation 1

Reference material describing how the API behaves

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Idempotency

Conventions

Conformance

Scroll for all 7

Build 2

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

Access & Security 5

Authentication, authorization, and security posture

Security

Security

SecurityTxt

SecurityTxt

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: graunt-com
name: Graunt
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - security
  generated: '2026-11-13'
  method: derived
image: https://graunt.com/brand/og-card-1200x630.png?v=51ec8a479844
description: Graunt operates an agent‑native marketplace that enables developers and organizations to buy and sell high‑quality
  data sets for training and running AI models. The platform provides tools for data discovery, licensing, secure transfer,
  and payment processing, positioning itself as a trusted hub for AI data commerce. By connecting data providers with AI practitioners,
  Graunt aims to accelerate model development while ensuring compliance with data usage policies and fostering a vibrant data
  economy.
url: https://artifacts.apis.io/graunt-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-10 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-10'
modified: '2026-11-10'
tags:
- Company
- Artificial Intelligence
- Data Marketplace
- Marketplace
- Data
tags_raw:
- Company
- AI
- Data Marketplace
- Marketplace
- Data
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/graunt-com-rules.yml
- type: JSONLD
  url: json-ld/graunt-com-context.jsonld
- type: Vocabulary
  url: vocabulary/graunt-com-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/graunt-com-data-model.yml
- type: Idempotency
  url: conventions/graunt-com-conventions.yml
- type: Conventions
  url: conventions/graunt-com-conventions.yml
- type: Security
  url: security/graunt-com-vulnerability-disclosure.yml
- type: Conformance
  url: conformance/graunt-com-conformance.yml
- type: LLMsTxt
  url: llms/graunt-com-llms.txt
- type: SecurityTxt
  url: well-known/graunt-com-security.txt
- type: SecurityTxt
  url: well-known/graunt-com-api-security.txt
- type: WellKnown
  url: well-known/graunt-com-well-known.yml
- type: Hosts
  url: hosts/graunt-com-hosts.yml
- type: SDKs
  url: packages/graunt-com-packages.yml
- type: Packages
  url: packages/graunt-com-packages.yml
- type: TermsOfService
  url: https://graunt.com/legal/terms
- type: Support
  url: https://graunt.com/support
- type: PrivacyPolicy
  url: https://graunt.com/legal/privacy
- type: Login
  url: https://graunt.com/login
- type: APIReference
  url: https://graunt.com/sell/guides
- type: VulnerabilityDisclosure
  url: security/graunt-com-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/graunt-com-domain-security.yml
- type: Website
  url: https://graunt.com/
apis:
- aid: graunt-com:graunt-com-api
  name: Graunt API
  description: 'Graunt API as documented publicly: 74 operations. Contract generated from the documentation by API Evangelist
    (2026-11-10); not the provider''s own document.'
  humanURL: https://graunt.com/api-agents
  baseURL: https://api.graunt.com
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/graunt-com-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/graunt-com-post-v1-agents-signup-request-schema.json
  - type: JSONSchema
    url: json-schema/graunt-com-post-v1-listings-request-schema.json
  - type: JSONSchema
    url: json-schema/graunt-com-post-v1-packet-upload-sessions-sid-assets-request-schema.json
  - type: JSONSchema
    url: json-schema/graunt-com-get-v1-auth-me-response-schema.json
  - type: JSONSchema
    url: json-schema/graunt-com-post-v1-refinery-uploads-presign-request-schema.json
  - type: JSONSchema
    url: json-schema/graunt-com-post-v1-agents-listings-submit-request-schema.json
x-enrichment:
  date: '2026-11-10'
  status: enriched
  artifacts_added: 34
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Graunt API — frequently asked questions

Does Graunt have an API?

Yes. APIs.io lists 1 API from Graunt, including Graunt API.

Is there an OpenAPI specification for the Graunt API?

Yes. APIs.io indexes 1 OpenAPI specification for Graunt, each linked for download from this page.

Is the Graunt API ready for AI agents?

Graunt has a Kin Score of 30.7 out of 100 (thin) and an Agent Readiness score of 35.7 (agent-ready), scored by API Evangelist on 2026-11-13.

Work with this as data

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get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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