Carte

Carta provides an end‑to‑end suite for private capital markets, offering cap table management, equity plan administration, fund accounting, compliance, and a robust API platform for developers to integrate equity data, valuations, and workflow automation across investors, companies, and service providers.

Carte is listed with 2 APIs on the APIs.io network. Tagged areas include Company, Finance, Equity, FundManagement, and API.

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

Carte’s developer surface includes authentication, engineering blog, API reference, getting-started guide, documentation, and 22 more developer resources.

🌐 Visit website 📡 Source on GitHub
51.3/100 developing Agent 34/100 agent ready Full breakdown ↓
scored 2026-10-09 · rubric v0.23.0
2 APIs
CompanyFinanceEquityFundManagementAPI

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-10-09 · rubric v0.23.0
Composite quality — 51.3/100 · developing
Contract Quality 9.6 / 21
Developer Ergonomics 7.3 / 17
Access Clarity 6.7 / 17
Operational Transparency 5.6 / 11
Contract Governance 8.1 / 10
Discoverability 5.2 / 9
Regulatory Posture 3.8 / 15
Agent readiness — 34/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 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 6 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 6 / 6
Agentic Commerce Well-Known Document 0 / 5
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/.
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 github.com/api-evangelist/carte: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 2

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

Carta API

API platform for private capital markets, providing endpoints for equity data, valuations, and workflow automation.

Carte API

Carte API as documented publicly: 10 operations. Contract generated from the documentation by API Evangelist (2026-10-07); not the provider's own document.

Rate Limits 1

Documented rate limits and quota policies.

Carte Rate Limits

2 limits

RATE LIMITS

Semantic Vocabularies 1

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

Carte Context

1 classes · 1 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Carte API Rules

11 rules · 8 errors 2 warnings 1 info

SPECTRAL

JSON Schema 1

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

PostV1Alpha1FilesUploadResponse

6 properties

JSON SCHEMA

Security Posture 3

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

Carte Authentication

1 scheme

SECURITY

Carte Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Carte Trust Center

SOC 2, ISO 27001, GDPR

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login
Login
 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

LLMsTxt
LLMsTxt
 WellKnown
WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral
Spectral
 JSONLD
JSONLD
 Vocabulary
Vocabulary
 DataModel
DataModel
 Conformance
Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 6

Authentication, authorization, and security posture

Compliance
Compliance
 Authentication
Authentication
 SecurityTxt
SecurityTxt
 Security
Security
 TrustCenter
TrustCenter
 DomainSecurity
DomainSecurity

Operate 2

Status, limits, changes, and where to get help

RateLimits
RateLimits
 StatusPage
StatusPage

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy

Company 3

The organization behind the API

Newsroom
Newsroom
 Blog
Blog
 Website
Website

Other 3

Properties that don't map to a standard resource type

Hosts
Hosts
 Vendors
Vendors
 Leadership
Leadership

Source (apis.yml)

apis.yml Raw ↑ 
aid: carte
name: Carte
image: https://images.ctfassets.net/y88td1zx1ufe/6RvXq471HohgYLlne9iKay/1e1a7d9f63a73e279fb38ab589210422/OG.png
description: Carta provides an end‑to‑end suite for private capital markets, offering cap table management, equity plan administration,
  fund accounting, compliance, and a robust API platform for developers to integrate equity data, valuations, and workflow
  automation across investors, companies, and service providers.
url: https://raw.githubusercontent.com/api-evangelist/carte/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-07 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-07'
modified: '2026-10-07'
tags:
- Company
- Finance
- Equity
- FundManagement
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: RateLimits
  url: rate-limits/carte-rate-limits.yml
- type: Spectral
  url: rules/carte-rules.yml
- type: JSONLD
  url: json-ld/carte-context.jsonld
- type: Vocabulary
  url: vocabulary/carte-vocabulary.yml
- type: DataModel
  url: data-model/carte-data-model.yml
- type: Compliance
  url: https://trust.carta.com/
- type: Authentication
  url: authentication/carte-authentication.yml
- type: Conformance
  url: conformance/carte-conformance.yml
- type: LLMsTxt
  url: llms/carte-llms.txt
- type: SecurityTxt
  url: well-known/carte-status-security.txt
- type: WellKnown
  url: well-known/carte-well-known.yml
- type: Hosts
  url: hosts/carte-hosts.yml
- type: Vendors
  url: vendors/carte-vendors.yml
- type: StatusPage
  url: https://status.carta.com/
- type: Security
  url: https://carta.com/security/generative-ai-at-carta/
- type: PrivacyPolicy
  url: https://carta.com/privacy/
- type: Newsroom
  url: https://carta.com/press/
- type: Login
  url: https://login.app.carta.com/credentials/login/
- type: Leadership
  url: https://carta.com/learn/private-funds/management/
- type: Blog
  url: https://carta.com/blog/
- type: APIReference
  url: https://docs.carta.com/api-platform/reference/v-1-alpha-1-draft-issuers-create-draft-issuer
- type: GettingStarted
  url: https://docs.carta.com/api-platform/guides/getting-started/introduction
- type: Documentation
  url: https://docs.carta.com/
- type: GitHubOrganization
  url: https://github.com/carta
- type: TrustCenter
  url: security/carte-trust-center.yml
- type: DomainSecurity
  url: security/carte-domain-security.yml
- type: Website
  url: https://carta.com
apis:
- name: Carta API
  description: API platform for private capital markets, providing endpoints for equity data, valuations, and workflow automation.
  humanURL: https://docs.carta.com/api-platform/guides/getting-started/introduction
  baseURL: null
  aid: carte:carta-api
- aid: carte:carte-api
  name: Carte API
  description: 'Carte API as documented publicly: 10 operations. Contract generated from the documentation by API Evangelist
    (2026-10-07); not

    the provider''s own document.'
  humanURL: https://docs.carta.com/api-platform/reference/v-1-alpha-1-files-upload-file
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/carte-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/carte-post-v1-alpha1-files-upload-response-schema.json
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: Docs at https://docs.carta.com provide API reference but no OpenAPI or other machine‑readable contract was found.
  evidence:
  - url: https://docs.carta.com/openapi.json
    status: 404
  checked: '2026-10-07'
x-enrichment:
  date: '2026-10-07'
  status: enriched
  artifacts_added: 19
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this
  • find_providersBrowse and filter every provider in the catalog.
  • get_provider_artifactsEvery artifact this provider publishes, grouped by type.
  • 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.
All 92 tools →

Call it yourself

curl for this page
This provider 
curl "https://apis.io/api/v1/providers/carte"
All providers 
curl "https://apis.io/api/v1/providers?limit=25"
Every operation they expose 
curl "https://apis.io/api/v1/providers/carte/operations?limit=25"
How their score was established 
curl "https://apis.io/api/v1/providers/carte/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.