Zest

Zest Equity is a DIFC/ADGM-based provider of digital infrastructure for private-market transactions across the Middle East and North Africa. Its SPV-as-a-Service (SPaaS) platform lets partners create Cayman/DIFC Special Purpose Vehicles, run FSRA-regulated escrow, and arrange private capital deals. The Zest Public API gives partners programmatic access to the core workflow: OAuth 2.0 JWT-Bearer authentication, contract-validated SPV creation requests, bulk investor onboarding, subscription processing (signed forms + funding receipts), and nine HMAC-SHA256-signed webhook lifecycle events, with Idempotency-Key support on write endpoints and a uniform error envelope.

Zest publishes 8 APIs on the APIs.io network, including Authentication API, Contracts API, Investors API, and 5 more. Tagged areas include Company, SPV, Private Markets, Fintech, and Equity.

The Zest catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Zest’s developer surface includes documentation, API reference, getting-started guide, authentication, changelog, sandbox, engineering blog, and 19 more developer resources.

🌐 Visit website 📡 Source on GitHub

44.2/100 developing ▬ flat Agent 36/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

1 APIs

Company SPV Private Markets Fintech Equity Investors EscrowSPaaSMENA

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 44.2/100 · developing

Contract Quality 13.8 / 23

Developer Ergonomics 11.9 / 18

Access Clarity 4.3 / 18

Operational Transparency 3.1 / 12

Contract Governance 0.5 / 11

Discoverability 6.8 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 36/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 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 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

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/zest: 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 8

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

Zest Authentication API

OAuth 2.0 JWT-Bearer assertion grant. Exchange a partner-signed JWT for a short-lived bearer access token, then send that token in the Authorization header on every partner API ...

Zest Contracts API

Read-only access to the spaas-contract registry (templates, catalogs, primitives, samples) used to validate SPV-request `attributes`.

Zest Investors API

Bulk-create investor records with partial-success semantics. Each row carries its own status / error envelope so a single bad row never fails the batch.

Zest SPV Requests API

Submit SPV creation requests, inspect their lifecycle, and cancel pending ones. SPV requests are reviewed by Zest admins and produce SPV materialisation on approval.

Zest Subscription Forms API

Upload signed subscription forms (PDF or image) for partner-managed subscriptions. Files are streamed to private storage and referenced on the Bid.

Zest Subscription Fundings API

Upload wire-transfer receipts plus funding metadata. Strict order: a signed form must already be on record before fundings can be uploaded.

Zest Subscriptions API

Create one or more subscriptions for a single SPV.

Zest System API

Service health and OpenAPI introspection endpoints.

Scroll for all 8

Open Collections 9

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Zest equity public api Authentication API

OPEN COLLECTION

Zest equity public api Authentication Contracts API

OPEN COLLECTION

Zest equity public api Authentication Investors API

OPEN COLLECTION

Zest equity public api Authentication SPV Requests API

OPEN COLLECTION

Zest equity public api Authentication Subscription Forms API

OPEN COLLECTION

Zest equity public api Authentication Subscription Fundings API

OPEN COLLECTION

Zest equity public api Authentication Subscriptions API

OPEN COLLECTION

Zest equity public api Authentication System API

OPEN COLLECTION

Scroll for all 9

Event Specifications 1

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

Zest Webhooks

ASYNCAPI

Security Posture 2

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

Zest Authentication

http/oauth2 · 1 scheme

SECURITY

Zest Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Zest Agentic Access

23 operations · 7 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

GettingStarted

Sandbox

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

X-MCPServerCandidate

X-MCPServerCandidate

AgentSkill

AgentSkill

AgenticAccess

AgenticAccess

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

Lifecycle

Webhooks

Conformance

DataModel

Scroll for all 7

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: zest
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/zest.png
name: Zest
description: 'Zest Equity is a DIFC/ADGM-based provider of digital infrastructure for private-market transactions across the
  Middle East and North Africa. Its SPV-as-a-Service (SPaaS) platform lets partners create Cayman/DIFC Special Purpose Vehicles,
  run FSRA-regulated escrow, and arrange private capital deals. The Zest Public API gives partners programmatic access to
  the core workflow: OAuth 2.0 JWT-Bearer authentication, contract-validated SPV creation requests, bulk investor onboarding,
  subscription processing (signed forms + funding receipts), and nine HMAC-SHA256-signed webhook lifecycle events, with Idempotency-Key
  support on write endpoints and a uniform error envelope.'
url: https://raw.githubusercontent.com/api-evangelist/zest/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
- gv
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 22
  pass: local-v1
tags:
- Company
- SPV
- Private Markets
- Fintech
- Equity
- Investors
- Escrow
- SPaaS
- MENA
tags_raw:
- Company
- SPV
- Private Markets
- Fintech
- Equity
- Investors
- Escrow
- SPaaS
- MENA
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: zest:zest-authentication-api
  name: Zest Authentication API
  description: OAuth 2.0 JWT-Bearer assertion grant. Exchange a partner-signed JWT for a short-lived bearer access token,
    then send that token in the Authorization header on every partner API call.
  humanURL: https://docs.zestequity.com
  baseURL: https://public-api.zestequity.com
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/zest-authentication-api-openapi.yml
  - type: APIReference
    url: https://docs.zestequity.com/api-reference/openapi.json
  - type: GettingStarted
    url: https://docs.zestequity.com/quickstart
- aid: zest:zest-contracts-api
  name: Zest Contracts API
  description: Read-only access to the spaas-contract registry (templates, catalogs, primitives, samples) used to validate
    SPV-request `attributes`.
  humanURL: https://docs.zestequity.com
  baseURL: https://public-api.zestequity.com
  tags:
  - Contracts
  properties:
  - type: OpenAPI
    url: openapi/zest-contracts-api-openapi.yml
  - type: APIReference
    url: https://docs.zestequity.com/api-reference/openapi.json
  - type: GettingStarted
    url: https://docs.zestequity.com/quickstart
- aid: zest:zest-investors-api
  name: Zest Investors API
  description: Bulk-create investor records with partial-success semantics. Each row carries its own status / error envelope
    so a single bad row never fails the batch.
  humanURL: https://docs.zestequity.com
  baseURL: https://public-api.zestequity.com
  tags:
  - Investors
  properties:
  - type: OpenAPI
    url: openapi/zest-investors-api-openapi.yml
  - type: APIReference
    url: https://docs.zestequity.com/api-reference/openapi.json
  - type: GettingStarted
    url: https://docs.zestequity.com/quickstart
- aid: zest:zest-spv-requests-api
  name: Zest SPV Requests API
  description: Submit SPV creation requests, inspect their lifecycle, and cancel pending ones. SPV requests are reviewed by
    Zest admins and produce SPV materialisation on approval.
  humanURL: https://docs.zestequity.com
  baseURL: https://public-api.zestequity.com
  tags:
  - SPV Requests
  properties:
  - type: OpenAPI
    url: openapi/zest-spv-requests-api-openapi.yml
  - type: APIReference
    url: https://docs.zestequity.com/api-reference/openapi.json
  - type: GettingStarted
    url: https://docs.zestequity.com/quickstart
- aid: zest:zest-subscription-forms-api
  name: Zest Subscription Forms API
  description: Upload signed subscription forms (PDF or image) for partner-managed subscriptions. Files are streamed to private
    storage and referenced on the Bid.
  humanURL: https://docs.zestequity.com
  baseURL: https://public-api.zestequity.com
  tags:
  - Subscription Forms
  properties:
  - type: OpenAPI
    url: openapi/zest-subscription-forms-api-openapi.yml
  - type: APIReference
    url: https://docs.zestequity.com/api-reference/openapi.json
  - type: GettingStarted
    url: https://docs.zestequity.com/quickstart
- aid: zest:zest-subscription-fundings-api
  name: Zest Subscription Fundings API
  description: 'Upload wire-transfer receipts plus funding metadata. Strict order: a signed form must already be on record
    before fundings can be uploaded.'
  humanURL: https://docs.zestequity.com
  baseURL: https://public-api.zestequity.com
  tags:
  - Subscription Fundings
  properties:
  - type: OpenAPI
    url: openapi/zest-subscription-fundings-api-openapi.yml
  - type: APIReference
    url: https://docs.zestequity.com/api-reference/openapi.json
  - type: GettingStarted
    url: https://docs.zestequity.com/quickstart
- aid: zest:zest-subscriptions-api
  name: Zest Subscriptions API
  description: Create one or more subscriptions for a single SPV.
  humanURL: https://docs.zestequity.com
  baseURL: https://public-api.zestequity.com
  tags:
  - Subscription
  tags_raw:
  - Subscriptions
  properties:
  - type: OpenAPI
    url: openapi/zest-subscriptions-api-openapi.yml
  - type: APIReference
    url: https://docs.zestequity.com/api-reference/openapi.json
  - type: GettingStarted
    url: https://docs.zestequity.com/quickstart
- aid: zest:zest-system-api
  name: Zest System API
  description: Service health and OpenAPI introspection endpoints.
  humanURL: https://docs.zestequity.com
  baseURL: https://public-api.zestequity.com
  tags:
  - System
  properties:
  - type: OpenAPI
    url: openapi/zest-system-api-openapi.yml
  - type: APIReference
    url: https://docs.zestequity.com/api-reference/openapi.json
  - type: GettingStarted
    url: https://docs.zestequity.com/quickstart
common:
- type: Overlay
  url: overlays/zest-openapi-overlay.yaml
- type: Documentation
  url: https://docs.zestequity.com
- type: DeveloperPortal
  url: https://docs.zestequity.com
- type: APIReference
  url: https://docs.zestequity.com/api-reference/openapi.json
- type: GettingStarted
  url: https://docs.zestequity.com/quickstart
- type: LLMsTxt
  url: llms/zest-llms.txt
- type: Authentication
  url: authentication/zest-authentication.yml
- type: Conventions
  url: conventions/zest-conventions.yml
- type: Idempotency
  url: conventions/zest-conventions.yml
- type: ErrorCatalog
  url: errors/zest-problem-types.yml
- type: Lifecycle
  url: lifecycle/zest-lifecycle.yml
- type: ChangeLog
  url: changelog/zest-changelog.yml
- type: Sandbox
  url: sandbox/zest-sandbox.yml
- type: Webhooks
  url: asyncapi/zest-webhooks.yml
- type: X-MCPServerCandidate
  url: mcp/zest-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/zest-agentic-access.yml
- type: Conformance
  url: conformance/zest-conformance.yml
- type: DataModel
  url: data-model/zest-data-model.yml
- type: DomainSecurity
  url: security/zest-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/zestequity
- type: Blog
  url: https://www.zestequity.com/blog
- type: Support
  url: https://www.zestequity.com/contact
- type: SignUp
  url: https://app.zestequity.com/sign-in
- type: PrivacyPolicy
  url: https://app.zestequity.com/privacy-policy
- type: Website
  url: https://zestequity.com

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