# Carta

**Canonical:** https://apis.io/providers/carta/  
**Website:** https://carta.com  
**APIs profiled:** 5

Carta is an equity management platform offering a REST API for cap table management, 409A valuations, fund administration, employee equity plans, and investor portfolio management. Carta's Developer Platform exposes four API suites — Launch, Investor, Issuer, and Portfolio — authenticated via OAuth 2.0 (Authorization Code and Client Credentials flows). Partner access is invite-only and requires SOC 2 Type 2 certification; Carta customers may request access to their own data on demand. A mock API environment at mock-api.carta.com is provided for sandbox development.

## Kin Score — 26.0 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 26.0).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 11.3 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 21.1 |
| Developer Ergonomics | 7.1 |
| Commercial Clarity | 57.9 |
| Access Clarity | 57.9 |

## Agent readiness — 3.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Free · Requires approval — onboarding: approval, pricing: free, trial: no (confidence: medium).

## APIs (5)

- **Carta Launch API** — Enables incorporation partners and law firms to programmatically onboard new companies onto the Carta platform, streamlining the company formation and cap table initialisation w...
- **Carta Investor API** — Permits fund operators to retrieve cap table summaries and portfolio position data for their holdings, enabling downstream analytics, reporting, and portfolio management workflows.
- **Carta Issuer API** — Allows law firms and technology partners to retrieve cap table data on behalf of companies, supporting legal workflows, equity issuance, and 409A valuation processes.
- **Carta Portfolio API** — Enables personal finance and wealth management platforms to aggregate equity holdings data for individuals, supporting estate planning, tax preparation, option financing, and un...
- **Carta CRM API** — Facilitates deal and fundraising relationship management across investment processes for fund operators, providing structured access to CRM data within the Carta platform.

## Security (2)

- **Carta Domain Security** — TLSv1.3 · HSTS · DMARC
- **Carta Trust Center** — SOC 2, ISO 27001, GDPR

## Plans (1)

- **Carta Plans Pricing**

## Tags

Equity Management, Cap Table, 409A Valuations, Fund Administration, Employee Equity, Investor Portfolio, Private Markets, Fintech

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/carta/). Scores are computed from the provider's own public artifacts under a published rubric.