Fractal

Fractal is a company surfaced via the API Evangelist harvest backlog (source: vc-portfolio; backed by multicoin-capital, paradigm) and added to the network as a stub for full-pipeline profiling.

Fractal publishes 19 API contracts indexed on the APIs.io network, including Approval Service API, Chain Service API, EVM Experimental Service API, and 16 more. Tagged areas include Company.

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

Fractal’s developer surface includes API reference, getting-started guide, documentation, authentication, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

30.9/100 thin Agent 23/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

3 published contracts

Company

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 30.9/100 · thin

Contract Quality 11.9 / 21

Developer Ergonomics 6.9 / 17

Access Clarity 1.8 / 17

Operational Transparency 0.0 / 11

Contract Governance 2.2 / 10

Discoverability 2.7 / 9

Regulatory Posture 3.1 / 15

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 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 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

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
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

8 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 10.5 — up to +17.9 composite points
Operational Transparency scores 0.0 — up to +13.0 composite points
Developer Ergonomics scores 40.5 — up to +11.9 composite points

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.

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/fractal-is/apis.yml: open an issue on github.com/api-evangelist/fractal-is 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 →

APIs 19

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

Fractal Approval Service API

The ApprovalService API from Fractal — 2 operation(s) for approvalservice.

Fractal Chain Service API

The ChainService API from Fractal — 3 operation(s) for chainservice.

Fractal EVM Experimental Service API

The EVMExperimentalService API from Fractal — 5 operation(s) for evmexperimentalservice.

Fractal File Service API

The FileService API from Fractal — 1 operation(s) for fileservice.

Fractal Inventory Management Service API

The InventoryManagementService API from Fractal — 3 operation(s) for inventorymanagementservice.

Fractal Link Account Service API

The LinkAccountService API from Fractal — 1 operation(s) for linkaccountservice.

Fractal Marketplace Service API

The MarketplaceService API from Fractal — 2 operation(s) for marketplaceservice.

Fractal Metagame Service API

The MetagameService API from Fractal — 1 operation(s) for metagameservice.

Fractal OAuth API

The Oauth API from Fractal — 1 operation(s) for oauth.

Fractal Score Service API

The ScoreService API from Fractal — 3 operation(s) for scoreservice.

Fractal Sign In Service V2 API

The SignInServiceV2 API from Fractal — 3 operation(s) for signinservicev2.

Fractal Solana Admin Service API

The SolanaAdminService API from Fractal — 2 operation(s) for solanaadminservice.

Fractal Solana Marketplace Service API

The SolanaMarketplaceService API from Fractal — 2 operation(s) for solanamarketplaceservice.

Fractal Solana Mint Experimental Service API

The SolanaMintExperimentalService API from Fractal — 3 operation(s) for solanamintexperimentalservice.

Fractal Solana Transaction Service API

The SolanaTransactionService API from Fractal — 4 operation(s) for solanatransactionservice.

Fractal Tournament Service API

The TournamentService API from Fractal — 4 operation(s) for tournamentservice.

Fractal Transaction Service API

The TransactionService API from Fractal — 2 operation(s) for transactionservice.

Fractal Wallet Service API

The WalletService API from Fractal — 3 operation(s) for walletservice.

Fractal Auth Service API

The Auth Service API from Fractal — 1 operation(s) for auth service.

Scroll for all 19

Semantic Vocabularies 1

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

Fractal Is Context

81 classes · 96 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Fractal API Rules

13 rules · 7 errors 3 warnings 3 info

SPECTRAL

OpenAPI Overlays 1

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.

Fractal Is Api Overlay

0 actions · update

UNRECORDED

Security Posture 2

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

Fractal Is Authentication

apiKey/http · 2 schemes

SECURITY

Fractal Is Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Fractal Is Agentic Access

46 operations · 22 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: fractal-is
name: Fractal
description: 'Fractal is a company surfaced via the API Evangelist harvest backlog (source: vc-portfolio; backed by multicoin-capital,
  paradigm) and added to the network as a stub for full-pipeline profiling.'
url: https://raw.githubusercontent.com/api-evangelist/fractal-is/refs/heads/main/apis.yml
x-type: company
x-source: harvest:vc-portfolio
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-22 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-22'
modified: '2026-10-22'
tags:
- Company
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/fractal-is-agentic-access.yml
- type: Spectral
  url: rules/fractal-is-rules.yml
- type: JSONLD
  url: json-ld/fractal-is-context.jsonld
- type: Vocabulary
  url: vocabulary/fractal-is-vocabulary.yml
- type: DataModel
  url: data-model/fractal-is-data-model.yml
- type: ErrorCatalog
  url: errors/fractal-is-problem-types.yml
- type: Conformance
  url: conformance/fractal-is-conformance.yml
- type: LLMsTxt
  url: llms/fractal-is-llms.txt
- type: Hosts
  url: hosts/fractal-is-hosts.yml
- type: Vendors
  url: vendors/fractal-is-vendors.yml
- type: PrivacyPolicy
  url: https://www.fractal.is/privacypolicy
- type: APIReference
  url: https://reference.fractal.is/reference
- type: GettingStarted
  url: https://docs.fractal.is/getting-started/introduction
- type: Documentation
  url: https://developers.fractal.is/
- type: Authentication
  url: authentication/fractal-is-authentication.yml
- type: DomainSecurity
  url: security/fractal-is-domain-security.yml
- type: Website
  url: https://fractal.is
apis:
- aid: fractal-is:fractal-is-approvalservice-api
  name: Fractal Approval Service API
  description: The ApprovalService API from Fractal — 2 operation(s) for approvalservice.
  tags:
  - ApprovalService
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-approvalservice-api-openapi.yml
- aid: fractal-is:fractal-is-chainservice-api
  name: Fractal Chain Service API
  description: The ChainService API from Fractal — 3 operation(s) for chainservice.
  tags:
  - ChainService
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-chainservice-api-openapi.yml
- aid: fractal-is:fractal-is-evmexperimentalservice-api
  name: Fractal EVM Experimental Service API
  description: The EVMExperimentalService API from Fractal — 5 operation(s) for evmexperimentalservice.
  tags:
  - EVMExperimentalService
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-evmexperimentalservice-api-openapi.yml
- aid: fractal-is:fractal-is-fileservice-api
  name: Fractal File Service API
  description: The FileService API from Fractal — 1 operation(s) for fileservice.
  tags:
  - FileService
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-fileservice-api-openapi.yml
- aid: fractal-is:fractal-is-inventorymanagementservice-api
  name: Fractal Inventory Management Service API
  description: The InventoryManagementService API from Fractal — 3 operation(s) for inventorymanagementservice.
  tags:
  - InventoryManagementService
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-inventorymanagementservice-api-openapi.yml
- aid: fractal-is:fractal-is-linkaccountservice-api
  name: Fractal Link Account Service API
  description: The LinkAccountService API from Fractal — 1 operation(s) for linkaccountservice.
  tags:
  - LinkAccountService
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-linkaccountservice-api-openapi.yml
- aid: fractal-is:fractal-is-marketplaceservice-api
  name: Fractal Marketplace Service API
  description: The MarketplaceService API from Fractal — 2 operation(s) for marketplaceservice.
  tags:
  - MarketplaceService
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-marketplaceservice-api-openapi.yml
- aid: fractal-is:fractal-is-metagameservice-api
  name: Fractal Metagame Service API
  description: The MetagameService API from Fractal — 1 operation(s) for metagameservice.
  tags:
  - MetagameService
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-metagameservice-api-openapi.yml
- aid: fractal-is:fractal-is-oauth-api
  name: Fractal OAuth API
  description: The Oauth API from Fractal — 1 operation(s) for oauth.
  tags:
  - Oauth
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-oauth-api-openapi.yml
- aid: fractal-is:fractal-is-scoreservice-api
  name: Fractal Score Service API
  description: The ScoreService API from Fractal — 3 operation(s) for scoreservice.
  tags:
  - ScoreService
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-scoreservice-api-openapi.yml
- aid: fractal-is:fractal-is-signinservicev2-api
  name: Fractal Sign In Service V2 API
  description: The SignInServiceV2 API from Fractal — 3 operation(s) for signinservicev2.
  tags:
  - SignInServiceV2
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-signinservicev2-api-openapi.yml
- aid: fractal-is:fractal-is-solanaadminservice-api
  name: Fractal Solana Admin Service API
  description: The SolanaAdminService API from Fractal — 2 operation(s) for solanaadminservice.
  tags:
  - SolanaAdminService
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-solanaadminservice-api-openapi.yml
- aid: fractal-is:fractal-is-solanamarketplaceservice-api
  name: Fractal Solana Marketplace Service API
  description: The SolanaMarketplaceService API from Fractal — 2 operation(s) for solanamarketplaceservice.
  tags:
  - SolanaMarketplaceService
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-solanamarketplaceservice-api-openapi.yml
- aid: fractal-is:fractal-is-solanamintexperimentalservice-api
  name: Fractal Solana Mint Experimental Service API
  description: The SolanaMintExperimentalService API from Fractal — 3 operation(s) for solanamintexperimentalservice.
  tags:
  - SolanaMintExperimentalService
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-solanamintexperimentalservice-api-openapi.yml
- aid: fractal-is:fractal-is-solanatransactionservice-api
  name: Fractal Solana Transaction Service API
  description: The SolanaTransactionService API from Fractal — 4 operation(s) for solanatransactionservice.
  tags:
  - SolanaTransactionService
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-solanatransactionservice-api-openapi.yml
- aid: fractal-is:fractal-is-tournamentservice-api
  name: Fractal Tournament Service API
  description: The TournamentService API from Fractal — 4 operation(s) for tournamentservice.
  tags:
  - TournamentService
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-tournamentservice-api-openapi.yml
- aid: fractal-is:fractal-is-transactionservice-api
  name: Fractal Transaction Service API
  description: The TransactionService API from Fractal — 2 operation(s) for transactionservice.
  tags:
  - TransactionService
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-transactionservice-api-openapi.yml
- aid: fractal-is:fractal-is-walletservice-api
  name: Fractal Wallet Service API
  description: The WalletService API from Fractal — 3 operation(s) for walletservice.
  tags:
  - WalletService
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-walletservice-api-openapi.yml
- aid: fractal-is:fractal-is-auth-service-api
  name: Fractal Auth Service API
  description: The Auth Service API from Fractal — 1 operation(s) for auth service.
  tags:
  - Auth Service
  properties:
  - type: OpenAPI
    url: openapi/fractal-is-auth-service-api-openapi.yml
x-backed-by:
- multicoin-capital
- paradigm
x-enrichment:
  date: '2026-10-22'
  status: enriched
  artifacts_added: 24
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Fractal API — frequently asked questions

Does Fractal have an API?

Yes. APIs.io lists 19 APIs from Fractal, including Fractal Approval Service API, Fractal Chain Service API and Fractal EVM Experimental Service API, and 16 more.

Is there an OpenAPI specification for the Fractal API?

Yes. APIs.io indexes 19 OpenAPI specifications for Fractal, each linked for download from this page.

How do I authenticate with the Fractal API?

Fractal uses bearer-token authentication (apiKey/http · 2 schemes). The details are profiled on APIs.io as Fractal Is Authentication.

Is the Fractal API ready for AI agents?

Fractal has a Kin Score of 30.9 out of 100 (thin) and an Agent Readiness score of 23.1 (agent-aware), scored by API Evangelist on 2026-10-31.

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