BeliefState

BeliefState provides an AI-powered platform delivering top analyst research, price targets, and risk assessments directly to AI agents. Users can access curated investment theses, real-time market data, and customizable research feeds, enabling AI-driven decision making and automated analysis across stocks and sectors.

BeliefState publishes 7 API contracts indexed on the APIs.io network, including Access API, Beliefs API, Brief API, and 4 more. Tagged areas include Artificial Intelligence, Finance, Research, Analytics, and Platform.

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

BeliefState’s developer surface includes changelog, authentication, API reference, documentation, pricing, support, getting-started guide, and 24 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

54.3/100 strong Agent 53/100 agent ready Full breakdown ↓
scored 2026-11-02 · rubric v0.26.0 · Show this score on your site →

AccessPaid

1 published contract 1 MCP Servers 1 Agent Skills

Artificial Intelligence Finance Research Analytics Platform

Kin Score

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

Composite quality — 54.3/100 · strong

Contract Quality 13.1 / 21

Developer Ergonomics 8.8 / 17

Access Clarity 10.7 / 17

Operational Transparency 2.9 / 11

Contract Governance 2.2 / 10

Discoverability 5.5 / 9

Regulatory Posture 5.6 / 15

Agent readiness — 53/100 · 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 7 / 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 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 0 / 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):

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)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
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
Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter

1 more unmet check in the Agent Readiness table above.

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

Developer Ergonomics scores 51.7 — up to +9.7 composite points
Operational Transparency scores 26.3 — up to +9.6 composite points
Contract Quality scores 61.8 — up to +9.6 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/beliefstate-ai/apis.yml: open an issue on github.com/api-evangelist/beliefstate-ai 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.

Agent2Agent

measured — observed by APIs.io (conformant)

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

OpenAPI

measured — observed by APIs.io (published)

APIs 7

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

BeliefState Access API

The Access API from BeliefState — 1 operation(s) for access.

BeliefState Beliefs API

The Beliefs API from BeliefState — 1 operation(s) for beliefs.

BeliefState Brief API

The Brief API from BeliefState — 2 operation(s) for brief.

BeliefState Research API

The Research API from BeliefState — 18 operation(s) for research.

BeliefState Research payments API

The Research payments API from BeliefState — 16 operation(s) for research payments.

BeliefState Sources API

The Sources API from BeliefState — 1 operation(s) for sources.

BeliefState Tickers API

The Tickers API from BeliefState — 1 operation(s) for tickers.

Scroll for all 7

MCP Servers 1

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

BeliefState MCP Server

Remote MCP server at docs.beliefstate.ai.

MCP SERVER

Agent Skills 1

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

beliefstate

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Beliefstate Ai Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Beliefstate Ai Rate Limits

0 limits

RATE LIMITS

Semantic Vocabularies 1

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

Beliefstate Ai Context

23 classes · 84 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

BeliefState API Rules

48 rules · 37 errors 6 warnings 5 info

SPECTRAL

JSON Schema 6

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

X402BriefOverview

25 properties

JSON SCHEMA

X402_get_belief_Output

0 properties

JSON SCHEMA

X402_get_beliefs_Output

0 properties

JSON SCHEMA

X402_get_brief_Output

0 properties

JSON SCHEMA

X402_get_context_assessment_Output

9 properties

JSON SCHEMA

X402_list_research_visuals_Output

0 properties

JSON SCHEMA

Security Posture 3

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

Beliefstate Ai Authentication

4 schemes

SECURITY

Beliefstate Ai Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Beliefstate Ai Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Beliefstate Ai Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Beliefstate Ai Agentic Access

40 operations · 13 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 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

WellKnown

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conventions

Lifecycle

ErrorCatalog

Conformance

Scroll for all 8

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

ChangeLog

ChangeLog

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: beliefstate-ai
name: BeliefState
description: BeliefState provides an AI-powered platform delivering top analyst research, price targets, and risk assessments
  directly to AI agents. Users can access curated investment theses, real-time market data, and customizable research feeds,
  enabling AI-driven decision making and automated analysis across stocks and sectors.
url: https://artifacts.apis.io/beliefstate-ai/apis.yml
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  probe_state: gated
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-02'
  method: derived
image: https://beliefstate.ai/brand/beliefstate-x-pfp.png
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-02 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-02'
modified: '2026-11-02'
tags:
- Artificial Intelligence
- Finance
- Research
- Analytics
- Platform
tags_raw:
- AI
- Finance
- Research
- Analytics
- Platform
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/beliefstate-ai-agentic-access.yml
- type: Plans
  url: plans/beliefstate-ai-plans-pricing.yml
- type: Spectral
  url: rules/beliefstate-ai-rules.yml
- type: JSONLD
  url: json-ld/beliefstate-ai-context.jsonld
- type: Vocabulary
  url: vocabulary/beliefstate-ai-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/beliefstate-ai-data-model.yml
- type: ChangeLog
  url: changelog/beliefstate-ai-changelog.yml
- type: Conventions
  url: conventions/beliefstate-ai-conventions.yml
- type: Security
  url: https://beliefstate.ai/privacy#security
- type: Authentication
  url: authentication/beliefstate-ai-authentication.yml
- type: Lifecycle
  url: lifecycle/beliefstate-ai-lifecycle.yml
- type: ErrorCatalog
  url: errors/beliefstate-ai-problem-types.yml
- type: Conformance
  url: conformance/beliefstate-ai-conformance.yml
- type: LLMsTxt
  url: llms/beliefstate-ai-llms.txt
- type: AgentCard
  url: a2a/beliefstate-ai-a2a.yml
- type: MCPServer
  url: mcp/beliefstate-ai-mcp.yml
- type: SecurityTxt
  url: well-known/beliefstate-ai-security.txt
- type: WellKnown
  url: well-known/beliefstate-ai-well-known.yml
- type: Hosts
  url: hosts/beliefstate-ai-hosts.yml
- type: Vendors
  url: vendors/beliefstate-ai-vendors.yml
- type: APIReference
  url: https://docs.beliefstate.ai/api-reference/beliefs/find-investor-beliefs-or-inspect-a-full-record
- type: VulnerabilityDisclosure
  url: security/beliefstate-ai-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/beliefstate-ai-domain-security.yml
- type: Website
  url: https://beliefstate.ai/
- type: Documentation
  url: https://beliefstate.ai/docs
- type: Pricing
  url: https://beliefstate.ai/pricing
- type: TermsOfService
  url: https://beliefstate.ai/terms
- type: PrivacyPolicy
  url: https://beliefstate.ai/privacy
- type: Support
  url: https://beliefstate.ai/contact
- type: GettingStarted
  url: https://beliefstate.ai/guides/ai-investing
apis:
- aid: beliefstate-ai:beliefstate-ai-access-api
  name: BeliefState Access API
  description: The Access API from BeliefState — 1 operation(s) for access.
  humanURL: https://docs.beliefstate.ai/api-reference/beliefs/find-investor-beliefs-or-inspect-a-full-record
  baseURL: https://beliefstate.ai
  tags:
  - Access
  properties:
  - type: OpenAPI
    url: openapi/beliefstate-ai-access-api-openapi.yml
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-brief-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-list-research-visuals-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-belief-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-brief-overview-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-beliefs-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-context-assessment-output-schema.json
- aid: beliefstate-ai:beliefstate-ai-beliefs-api
  name: BeliefState Beliefs API
  description: The Beliefs API from BeliefState — 1 operation(s) for beliefs.
  humanURL: https://docs.beliefstate.ai/api-reference/beliefs/find-investor-beliefs-or-inspect-a-full-record
  baseURL: https://beliefstate.ai
  tags:
  - Beliefs
  properties:
  - type: OpenAPI
    url: openapi/beliefstate-ai-beliefs-api-openapi.yml
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-brief-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-list-research-visuals-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-belief-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-brief-overview-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-beliefs-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-context-assessment-output-schema.json
- aid: beliefstate-ai:beliefstate-ai-brief-api
  name: BeliefState Brief API
  description: The Brief API from BeliefState — 2 operation(s) for brief.
  humanURL: https://docs.beliefstate.ai/api-reference/beliefs/find-investor-beliefs-or-inspect-a-full-record
  baseURL: https://beliefstate.ai
  tags:
  - Brief
  properties:
  - type: OpenAPI
    url: openapi/beliefstate-ai-brief-api-openapi.yml
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-brief-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-list-research-visuals-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-belief-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-brief-overview-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-beliefs-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-context-assessment-output-schema.json
- aid: beliefstate-ai:beliefstate-ai-research-api
  name: BeliefState Research API
  description: The Research API from BeliefState — 18 operation(s) for research.
  humanURL: https://docs.beliefstate.ai/api-reference/beliefs/find-investor-beliefs-or-inspect-a-full-record
  baseURL: https://beliefstate.ai
  tags:
  - Research
  properties:
  - type: OpenAPI
    url: openapi/beliefstate-ai-research-api-openapi.yml
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-brief-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-list-research-visuals-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-belief-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-brief-overview-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-beliefs-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-context-assessment-output-schema.json
- aid: beliefstate-ai:beliefstate-ai-research-payments-api
  name: BeliefState Research payments API
  description: The Research payments API from BeliefState — 16 operation(s) for research payments.
  humanURL: https://docs.beliefstate.ai/api-reference/beliefs/find-investor-beliefs-or-inspect-a-full-record
  baseURL: https://beliefstate.ai
  tags:
  - Research payments
  properties:
  - type: OpenAPI
    url: openapi/beliefstate-ai-research-payments-api-openapi.yml
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-brief-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-list-research-visuals-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-belief-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-brief-overview-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-beliefs-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-context-assessment-output-schema.json
- aid: beliefstate-ai:beliefstate-ai-sources-api
  name: BeliefState Sources API
  description: The Sources API from BeliefState — 1 operation(s) for sources.
  humanURL: https://docs.beliefstate.ai/api-reference/beliefs/find-investor-beliefs-or-inspect-a-full-record
  baseURL: https://beliefstate.ai
  tags:
  - Sources
  properties:
  - type: OpenAPI
    url: openapi/beliefstate-ai-sources-api-openapi.yml
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-brief-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-list-research-visuals-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-belief-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-brief-overview-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-beliefs-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-context-assessment-output-schema.json
- aid: beliefstate-ai:beliefstate-ai-tickers-api
  name: BeliefState Tickers API
  description: The Tickers API from BeliefState — 1 operation(s) for tickers.
  humanURL: https://docs.beliefstate.ai/api-reference/beliefs/find-investor-beliefs-or-inspect-a-full-record
  baseURL: https://beliefstate.ai
  tags:
  - Tickers
  properties:
  - type: OpenAPI
    url: openapi/beliefstate-ai-tickers-api-openapi.yml
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-brief-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-list-research-visuals-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-belief-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-brief-overview-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-beliefs-output-schema.json
  - type: JSONSchema
    url: json-schema/beliefstate-ai-x402-get-context-assessment-output-schema.json
x-coverage:
  state: gated
  reason: partner-login
  method: derived
  generated: '2026-11-02'
  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://beliefstate.ai/openapi.json
    status: null
  - url: https://docs.beliefstate.ai/mcp
    status: null
  - url: https://beliefstate.ai/mcp
    status: 401
  - url: https://beliefstate.ai/
    status: 200
x-enrichment:
  date: '2026-11-02'
  status: enriched
  artifacts_added: 55
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

BeliefState API — frequently asked questions

Does BeliefState have an API?

Yes. APIs.io lists 7 APIs from BeliefState, including BeliefState Access API, BeliefState Beliefs API and BeliefState Brief API, and 4 more.

Is there an OpenAPI specification for the BeliefState API?

Yes. APIs.io indexes 7 OpenAPI specifications for BeliefState, each linked for download from this page.

How do I authenticate with the BeliefState API?

BeliefState documents its authentication (4 schemes). The details are profiled on APIs.io as Beliefstate Ai Authentication.

How much does the BeliefState API cost?

APIs.io lists 3 pricing plans for BeliefState, with each plan's price, limits and inclusions under Pricing Plans on this page.

Does BeliefState have an MCP server?

Yes. APIs.io lists 1 MCP server for BeliefState: Remote MCP server at docs.beliefstate.ai.

Is the BeliefState API ready for AI agents?

BeliefState has a Kin Score of 54.3 out of 100 (strong) and an Agent Readiness score of 52.6 (agent-ready), scored by API Evangelist on 2026-11-02.

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