Arkolith

Arkolith provides real-time institutional market-data APIs and an MCP server that surface SEC filings, 13F holdings, Form 4 insider trades, and derived signals. Users can start with a $1 trial for 300 research credits over 3 days, then subscribe for $29/mo. The platform offers searchable data, dashboards, and integration guides for AI agents, enabling agents to query market data with provenance.

Arkolith publishes 1 API contract indexed on the APIs.io network: Funds API. Tagged areas include Finance, Market Data, SEC, and MCP.

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

Arkolith’s developer surface includes authentication, getting-started guide, documentation, pricing, engineering blog, signup flow, support, and 23 more developer resources.

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55.6/100 strong Agent 43/100 agent ready Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-02 · rubric v0.26.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract 1 MCP Servers 1 Agent Skills

Finance Market Data SEC MCP

Kin Score

Kin Score How this is scored →
scored 2026-11-02 · rubric v0.26.0

Composite quality — 55.6/100 · strong

Contract Quality 11.6 / 21

Developer Ergonomics 8.0 / 17

Access Clarity 13.0 / 17

Operational Transparency 4.7 / 11

Contract Governance 2.2 / 10

Discoverability 5.0 / 9

Regulatory Posture 6.5 / 15

Agent readiness — 43/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 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 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 Securities & Market Data 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):

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
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's

3 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 54.4 — up to +11.4 composite points
Developer Ergonomics scores 46.9 — up to +10.6 composite points
Contract Governance scores 22.0 — up to +9.4 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/arkolith-com/apis.yml: open an issue on github.com/api-evangelist/arkolith-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 4

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 1

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

Arkolith Funds API

The Funds API from Arkolith — 1 operation(s) for funds.

MCP Servers 1

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

Arkolith MCP Server

Remote MCP server at arkolith.com.

MCP SERVER

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

capital-change-brief

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Arkolith Com Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Arkolith Com Rate Limits

3 limits

RATE LIMITS

Semantic Vocabularies 1

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

Arkolith Com Context

2 classes · 19 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Arkolith API Rules

34 rules · 32 errors 1 warnings 1 info

SPECTRAL

JSON Schema 1

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

FundList

0 properties

JSON SCHEMA

Security Posture 3

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

Arkolith Com Authentication

1 scheme

SECURITY

Arkolith Com Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Arkolith Com Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Arkolith Com Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Arkolith Com Agentic Access

1 operation

1 operations · 0 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Access & Security 5

Authentication, authorization, and security posture

Security

Security

Authentication

Authentication

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 3

The organization behind the API

Newsroom

Newsroom

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: arkolith-com
name: Arkolith
description: Arkolith provides real-time institutional market-data APIs and an MCP server that surface SEC filings, 13F holdings,
  Form 4 insider trades, and derived signals. Users can start with a $1 trial for 300 research credits over 3 days, then subscribe
  for $29/mo. The platform offers searchable data, dashboards, and integration guides for AI agents, enabling agents to query
  market data with provenance.
url: https://artifacts.apis.io/arkolith-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-01 (modular-v1; was harvest)
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: high
  probe_state: gated
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-11-02'
  method: derived
specificationVersion: '0.20'
created: '2026-11-01'
modified: '2026-11-01'
tags:
- Finance
- Market Data
- SEC
- MCP
tags_raw:
- finance
- market-data
- SEC
- API
- MCP
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://arkolith.com/arkolith-mark-strata.svg
common:
- type: AgenticAccess
  url: agentic-access/arkolith-com-agentic-access.yml
- type: RateLimits
  url: rate-limits/arkolith-com-rate-limits.yml
- type: Plans
  url: plans/arkolith-com-plans-pricing.yml
- type: Spectral
  url: rules/arkolith-com-rules.yml
- type: JSONLD
  url: json-ld/arkolith-com-context.jsonld
- type: Vocabulary
  url: vocabulary/arkolith-com-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/arkolith-com-data-model.yml
- type: Security
  url: security/arkolith-com-vulnerability-disclosure.yml
- type: Authentication
  url: authentication/arkolith-com-authentication.yml
- type: ErrorCatalog
  url: errors/arkolith-com-problem-types.yml
- type: Conformance
  url: conformance/arkolith-com-conformance.yml
- type: LLMsTxt
  url: llms/arkolith-com-llms.txt
- type: MCPServer
  url: mcp/arkolith-com-mcp.yml
- type: SecurityTxt
  url: well-known/arkolith-com-security.txt
- type: WellKnown
  url: well-known/arkolith-com-well-known.yml
- type: Hosts
  url: hosts/arkolith-com-hosts.yml
- type: Vendors
  url: vendors/arkolith-com-vendors.yml
- type: Newsroom
  url: https://arkolith.com/news
- type: GettingStarted
  url: https://arkolith.com/docs/quickstart
- type: VulnerabilityDisclosure
  url: security/arkolith-com-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/arkolith-com-domain-security.yml
- type: Website
  url: https://arkolith.com/
- type: Documentation
  url: https://arkolith.com/docs
- type: Pricing
  url: https://arkolith.com/pricing
- type: Blog
  url: https://arkolith.com/blog
- type: TermsOfService
  url: https://arkolith.com/terms
- type: PrivacyPolicy
  url: https://arkolith.com/privacy
- type: SignUp
  url: https://arkolith.com/auth/signup
- type: Support
  url: https://arkolith.com/contact
apis:
- aid: arkolith-com:arkolith-com-funds-api
  name: Arkolith Funds API
  description: The Funds API from Arkolith — 1 operation(s) for funds.
  humanURL: https://arkolith.com/docs/api
  baseURL: https://arkolith.com/api/v1
  tags:
  - Fund
  tags_raw:
  - Funds
  properties:
  - type: OpenAPI
    url: openapi/arkolith-com-funds-api-openapi.yml
  - type: JSONSchema
    url: json-schema/arkolith-com-fund-list-schema.json
x-coverage:
  state: gated
  reason: partner-login
  method: derived
  generated: '2026-11-01'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company serves an API surface but requires credentials before any description of it can be read
  evidence:
  - url: https://arkolith.com/openapi.json
    status: null
  - url: https://arkolith.com/api/mcp
    status: 401
  - url: https://arkolith.com/
    status: 200
x-enrichment:
  date: '2026-11-01'
  status: enriched
  artifacts_added: 36
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

Arkolith API — frequently asked questions

Does Arkolith have an API?

Yes. APIs.io lists 1 API from Arkolith, including Arkolith Funds API.

Is there an OpenAPI specification for the Arkolith API?

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

How do I authenticate with the Arkolith API?

Arkolith documents its authentication (1 scheme). The details are profiled on APIs.io as Arkolith Com Authentication.

How much does the Arkolith API cost?

APIs.io lists 5 pricing plans for Arkolith, with each plan's price, limits and inclusions under Pricing Plans on this page.

Does Arkolith have an MCP server?

Yes. APIs.io lists 1 MCP server for Arkolith: Remote MCP server at arkolith.com.

Is the Arkolith API ready for AI agents?

Arkolith has a Kin Score of 55.6 out of 100 (strong) and an Agent Readiness score of 42.9 (agent-ready), scored by API Evangelist on 2026-11-02.

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