Quartr

Quartr provides AI-powered infrastructure for company research, delivering real-time first‑party data from public companies to investment professionals, research platforms, and financial AI applications. Their platform aggregates earnings calls, transcripts, filings, and slides, enabling rapid insight extraction, trend detection, and automated analysis across over 16,000 companies. Quartr partners with OpenAI’s ChatGPT for Financial Services and serves major financial firms, offering both proprietary data engines and API access for seamless integration into analytics pipelines.

Quartr is listed with 1 API on the APIs.io network: Public API. Tagged areas include Company, Artificial Intelligence, Finance, Data, and Research.

The Quartr catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.

Quartr’s developer surface includes changelog, documentation, API reference, getting-started guide, support, engineering blog, pricing, and 23 more developer resources.

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36.6/100 thin ▼ -12.1 Agent 34/100 agent ready Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 API

Company Artificial Intelligence Finance Data Research

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 36.6/100 · thin

Contract Quality 6.2 / 21

Developer Ergonomics 4.3 / 17

Access Clarity 7.4 / 17

Operational Transparency 4.4 / 11

Contract Governance 2.2 / 10

Discoverability 6.2 / 9

Regulatory Posture 2.9 / 15

Agent readiness — 34/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 4 / 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

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 does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
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)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

5 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 29.0 — up to +17.8 composite points
Developer Ergonomics scores 25.0 — up to +15.0 composite points
Access Clarity scores 43.4 — up to +11.3 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/quartr/apis.yml: open an issue on github.com/api-evangelist/quartr 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 1

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.

OpenAPI

measured — observed by APIs.io (published)

APIs 1

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

Quartr Public API

The Public API from Quartr — 3 operation(s) for public.

Quartr API pricing

Prices published by Quartr, read 2026-10-28 from quartr.com/pricing.

Plan	Price
Quartr Pro	Contact sales Includes: Scalable pricing for multi-seat deals; Enterprise deal options available
Quartr API	Contact sales Includes: Every public company event across 65 markets; Enterprise & bundle options; AI-ready IR data

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Quartr Plans Pricing

2 plans

PLANS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Quartr

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Quartr Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Quartr Webhooks

ASYNCAPI

Semantic Vocabularies 1

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

Quartr Context

3 classes · 2 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Quartr API Rules

13 rules · 11 errors 1 warnings 1 info

SPECTRAL

JSON Schema 3

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

GetPublicV3CompaniesIdSegmentsResponse

2 properties

JSON SCHEMA

GetPublicV3DocumentsDocumentidResponse

2 properties

JSON SCHEMA

GetPublicV3V3IdResponse

2 properties

JSON SCHEMA

Security Posture 2

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

Quartr Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Quartr Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Webhooks

DataModel

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Postman

Postman

Access & Security 4

Authentication, authorization, and security posture

Security

Security

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

StatusPage

StatusPage

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: quartr
name: Quartr
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: low
  probe_state: unreadable
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://a.storyblok.com/f/182663/9850/bf56850515/variant-12-standard_og-home.png/m/1200x630
description: Quartr provides AI-powered infrastructure for company research, delivering real-time first‑party data from public
  companies to investment professionals, research platforms, and financial AI applications. Their platform aggregates earnings
  calls, transcripts, filings, and slides, enabling rapid insight extraction, trend detection, and automated analysis across
  over 16,000 companies. Quartr partners with OpenAI’s ChatGPT for Financial Services and serves major financial firms, offering
  both proprietary data engines and API access for seamless integration into analytics pipelines.
url: https://raw.githubusercontent.com/api-evangelist/quartr/refs/heads/main/apis.yml
x-type: company
x-source: harvest:stockholm-trip
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-15 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-15'
modified: '2026-10-15'
tags:
- Company
- Artificial Intelligence
- Finance
- Data
- Research
tags_raw:
- Company
- AI
- Finance
- Data
- Research
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/quartr-plans-pricing.yml
- type: Spectral
  url: rules/quartr-rules.yml
- type: JSONLD
  url: json-ld/quartr-context.jsonld
- type: Vocabulary
  url: vocabulary/quartr-vocabulary.yml
- type: Webhooks
  url: asyncapi/quartr-webhooks.yml
- type: DataModel
  url: data-model/quartr-data-model.yml
- type: ChangeLog
  url: changelog/quartr-changelog.yml
- type: Security
  url: https://quartr.com/security
- type: Conformance
  url: conformance/quartr-conformance.yml
- type: LLMsTxt
  url: llms/quartr-llms.txt
- type: SecurityTxt
  url: well-known/quartr-security.txt
- type: WellKnown
  url: well-known/quartr-well-known.yml
- type: Hosts
  url: hosts/quartr-hosts.yml
- type: Vendors
  url: vendors/quartr-vendors.yml
- type: StatusPage
  url: https://status.quartr.com/
- type: VulnerabilityDisclosure
  url: security/quartr-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/quartr-domain-security.yml
- type: Website
  url: https://quartr.com/
- type: DeveloperPortal
  url: https://portal.quartr.dev
- type: Documentation
  url: https://quartr.com/docs
- type: APIReference
  url: https://quartr.com/docs/api-reference
- type: GettingStarted
  url: https://quartr.com/docs/introduction
- type: Support
  url: https://quartr.com/docs/support
- type: Blog
  url: https://quartr.com/newsroom
- type: GitHubOrganization
  url: https://github.com/quartr
- type: Pricing
  url: https://quartr.com/pricing
- type: SignUp
  url: https://quartr.com/contact-sales
- type: TermsOfService
  url: https://quartr.com/terms-of-service
- type: PrivacyPolicy
  url: https://quartr.com/terms-of-service/privacy-policy
- type: Postman
  url: https://www.postman.com/quartr/workspace/quartr-api
apis:
- aid: quartr:quartr-public-api
  name: Quartr Public API
  description: The Public API from Quartr — 3 operation(s) for public.
  humanURL: https://quartr.com/docs/rest-api/fetching-data
  baseURL: https://api.quartr.com
  tags:
  - Public
  properties:
  - type: OpenAPI
    url: openapi/quartr-public-api-openapi.yml
  - type: JSONSchema
    url: json-schema/quartr-get-public-v3-companies-id-segments-response-schema.json
  - type: JSONSchema
    url: json-schema/quartr-get-public-v3-documents-documentid-response-schema.json
  - type: JSONSchema
    url: json-schema/quartr-get-public-v3-v3-id-response-schema.json
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: The OpenAPI endpoint https://api.quartr.com/openapi.json returned HTTP 200 but an empty body, providing no machine‑readable
    contract.
  evidence:
  - url: https://api.quartr.com/openapi.json
    status: 200
  checked: '2026-10-15'
x-enrichment:
  date: '2026-10-15'
  status: enriched
  artifacts_added: 19
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Quartr API — frequently asked questions

Does Quartr have an API?

Yes. APIs.io lists 1 API from Quartr, including Quartr Public API.

Is there an OpenAPI specification for the Quartr API?

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

How do I authenticate with the Quartr API?

Quartr uses bearer-token authentication.

How much does the Quartr API cost?

APIs.io lists 2 pricing plans for Quartr, with each plan's price, limits and inclusions under Pricing on this page.

Is the Quartr API ready for AI agents?

Quartr has a Kin Score of 36.6 out of 100 (thin) and an Agent Readiness score of 33.7 (agent-ready), scored by API Evangelist on 2026-11-06.

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