Taina

TAINA Technology provides a fully automated, AI-driven regulatory tax compliance platform that validates and manages IRS W-series forms, CRS self-certifications, FATCA, CARF, and withholding tax documentation for banks, asset managers, and other financial institutions. Its Tax Form API lets institutions programmatically submit forms and supporting documents for validation, receive results and status codes via real-time webhooks, and retrieve preview and signed PDFs for electronic signature, deployed either embedded into an existing onboarding journey or as a standalone hosted portal. The platform adds OCR of scanned forms, intermediary structure management, and ongoing compliance monitoring.

Taina publishes 1 API on the APIs.io network. Tagged areas include Company, Tax Compliance, RegTech, FATCA, and CRS.

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

Taina’s developer surface includes support, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

29.1/100 thin ▬ flat Agent 17/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

1 APIs

Company Tax Compliance RegTechFATCACRSTax Forms Financial-ServicesWithholding TaxOnboarding

Kin Score

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

Composite quality — 29.1/100 · thin

Contract Quality 10.4 / 25

Developer Ergonomics 1.4 / 20

Access Clarity 7.4 / 20

Operational Transparency 1.0 / 13

Contract Governance 2.2 / 12

Discoverability 6.7 / 10

Agent readiness — 17/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 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 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

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.

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/taina: 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 1

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

TAINA Tax Form API

Gated REST API that lets financial institutions with their own KYC/onboarding process programmatically submit W-series forms, CRS self-certifications, and supporting documents f...

Event Specifications 1

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

Taina Tax Form Webhooks

ASYNCAPI

Security Posture 2

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

Taina Domain Security

TLSv1.3 · DMARC

SECURITY

Taina Trust Center

ISO 27001

SECURITY

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Webhooks

Webhooks

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Compliance

Compliance

TrustCenter

TrustCenter

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: taina
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/taina.png
name: Taina
description: TAINA Technology provides a fully automated, AI-driven regulatory tax compliance platform that validates and
  manages IRS W-series forms, CRS self-certifications, FATCA, CARF, and withholding tax documentation for banks, asset managers,
  and other financial institutions. Its Tax Form API lets institutions programmatically submit forms and supporting documents
  for validation, receive results and status codes via real-time webhooks, and retrieve preview and signed PDFs for electronic
  signature, deployed either embedded into an existing onboarding journey or as a standalone hosted portal. The platform adds
  OCR of scanned forms, intermediary structure management, and ongoing compliance monitoring.
url: https://raw.githubusercontent.com/api-evangelist/taina/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- anthemis
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Tax Compliance
- RegTech
- FATCA
- CRS
- Tax Forms
- Financial-Services
- Withholding Tax
- Onboarding
tags_raw:
- Company
- Tax Compliance
- RegTech
- FATCA
- CRS
- Tax Forms
- Financial Services
- Withholding Tax
- Onboarding
- API
apis:
- name: TAINA Tax Form API
  description: Gated REST API that lets financial institutions with their own KYC/onboarding process programmatically submit
    W-series forms, CRS self-certifications, and supporting documents for validation; receive validation results and codes
    with optional real-time webhook push to downstream systems; retrieve preview PDFs for electronic signature; and pull signed
    documents. Supports high-volume batch submission. No public OpenAPI specification or developer portal is published; access
    is provisioned to onboarded clients.
  humanURL: https://www.taina.tech/tax-form-api
  tags:
  - Tax Forms
  - Validation
  - Webhook
  - Onboarding
  tags_raw:
  - Tax Forms
  - Validation
  - Webhooks
  - Onboarding
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/taina-domain-security.yml
- type: Website
  url: https://www.taina.tech
- type: Support
  url: https://www.taina.tech/contact
- type: Blog
  url: https://www.taina.tech/resources-news-and-awards
- type: TermsOfService
  url: https://www.taina.tech/terms-and-conditions
- type: PrivacyPolicy
  url: https://www.taina.tech/privacy-and-gdpr-policy
- type: Compliance
  url: conformance/taina-conformance.yml
- type: Conformance
  url: conformance/taina-conformance.yml
- type: TrustCenter
  url: security/taina-trust-center.yml
- type: Webhooks
  url: asyncapi/taina-tax-form-webhooks.yml
- type: LLMsTxt
  url: llms/taina-llms.txt
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 5
  pass: local-v1

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