Fast GST Refund

Fast GST Refund provides a web-based JSON generator for GST export refund Statement 3 and Annexure B files, along with free guides, checklists, and tools for Indian service exporters and their chartered accountants. The service offers a low-cost download of generated JSON files (₹499 + GST) and plans to add connectors for accounting software. Operated by Xeloni Zarakas Private Limited, it aims to simplify GST refund preparation without requiring Excel.

Fast GST Refund publishes 3 API contracts indexed on the APIs.io network: Checklist API, Generator Files API, and Generators API. Tagged areas include GST, Refund, JSON, Export, and India.

The Fast GST Refund catalog on APIs.io includes 1 Spectral governance ruleset.

Fast GST Refund’s developer surface includes authentication, API reference, getting-started guide, support, engineering blog, and 14 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

34.3/100 thin Agent 35/100 agent ready Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessSelf serve

1 published contract 2 Agent Skills

GST Refund JSON Export India

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 34.3/100 · thin

Contract Quality 10.3 / 21

Developer Ergonomics 6.8 / 17

Access Clarity 2.9 / 17

Operational Transparency 0.0 / 11

Contract Governance 1.9 / 10

Discoverability 5.6 / 9

Regulatory Posture 4.3 / 15

Agent readiness — 35/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 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 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 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 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/.

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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 Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks Ask about this →

6 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 17.0 — up to +16.6 composite points Ask about this →
Operational Transparency scores 0.0 — up to +13.0 composite points Ask about this →
Contract Quality scores 48.4 — up to +12.9 composite points Ask about this →

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.

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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/fastgstrefund-com/apis.yml: open an issue on github.com/api-evangelist/fastgstrefund-com 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 4

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.

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

OAuth 2.0

measured — observed by APIs.io (declared)

APIs 3

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

Fast GST Refund Checklist API

The Checklist API from Fast GST Refund — 1 operation(s) for checklist.

Fast GST Refund Generator Files API

The Generator Files API from Fast GST Refund — 1 operation(s) for generator files.

Fast GST Refund Generators API

The Generators API from Fast GST Refund — 2 operation(s) for generators.

Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

fastgstrefund-com-generate-statement3-and-annexureb

AGENT SKILL

fastgstrefund-com-generate-statement3

AGENT SKILL

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Fast GST Refund API Rules

50 rules · 48 error-severity 1 warn-severity 1 info-severity

SPECTRAL

Security Posture 2

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

Fast GST Refund Authentication

oauth2 · 1 scheme

SECURITY

Fast GST Refund Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Fast GST Refund Scopes

1 scope · authorizationCode

1 scopes

SCOPES

Agentic Access (API Evangelist recommendations) 1

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

Fast GST Refund Agentic Access

7 operations · 3 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

WellKnown

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Spectral

Spectral

ErrorCatalog

ErrorCatalog

Conformance

Conformance

Access & Security 3

Authentication, authorization, and security posture

OAuthScopes

OAuthScopes

Authentication

Authentication

DomainSecurity

DomainSecurity

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

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: fastgstrefund-com
name: Fast GST Refund
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Self-serve signup
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://fastgstrefund.com/social.png
description: Fast GST Refund provides a web-based JSON generator for GST export refund Statement 3 and Annexure B files, along
  with free guides, checklists, and tools for Indian service exporters and their chartered accountants. The service offers
  a low-cost download of generated JSON files (₹499 + GST) and plans to add connectors for accounting software. Operated by
  Xeloni Zarakas Private Limited, it aims to simplify GST refund preparation without requiring Excel.
url: https://artifacts.apis.io/fastgstrefund-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-08 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-08'
modified: '2026-11-08'
tags:
- GST
- Refund
- JSON
- Export
- India
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/fastgstrefund-com-agentic-access.yml
- type: Spectral
  url: rules/fastgstrefund-com-rules.yml
- type: AgentSkill
  url: skills/_index.yml
- type: ErrorCatalog
  url: errors/fastgstrefund-com-problem-types.yml
- type: Conformance
  url: conformance/fastgstrefund-com-conformance.yml
- type: LLMsTxt
  url: llms/fastgstrefund-com-llms.txt
- type: WellKnown
  url: well-known/fastgstrefund-com-well-known.yml
- type: Hosts
  url: hosts/fastgstrefund-com-hosts.yml
- type: Vendors
  url: vendors/fastgstrefund-com-vendors.yml
- type: TermsOfService
  url: https://fastgstrefund.com/terms/
- type: PrivacyPolicy
  url: https://fastgstrefund.com/privacy/
- type: OAuthScopes
  url: scopes/fastgstrefund-com-scopes.yml
- type: Authentication
  url: authentication/fastgstrefund-com-authentication.yml
- type: DomainSecurity
  url: security/fastgstrefund-com-domain-security.yml
- type: Website
  url: https://fastgstrefund.com/
- type: APIReference
  url: https://fastgstrefund.com/openapi.json
- type: GettingStarted
  url: https://fastgstrefund.com/#get-started
- type: Support
  url: mailto:support@fastgstrefund.com
- type: Blog
  url: https://fastgstrefund.com/guides/
apis:
- aid: fastgstrefund-com:fastgstrefund-com-checklist-api
  name: Fast GST Refund Checklist API
  description: The Checklist API from Fast GST Refund — 1 operation(s) for checklist.
  humanURL: https://fastgstrefund.com/guides/
  baseURL: https://fastgstrefund.com
  tags:
  - Checklist
  properties:
  - type: OpenAPI
    url: openapi/fastgstrefund-com-checklist-api-openapi.yml
- aid: fastgstrefund-com:fastgstrefund-com-generator-files-api
  name: Fast GST Refund Generator Files API
  description: The Generator Files API from Fast GST Refund — 1 operation(s) for generator files.
  humanURL: https://fastgstrefund.com/guides/
  baseURL: https://fastgstrefund.com
  tags:
  - Generator Files
  properties:
  - type: OpenAPI
    url: openapi/fastgstrefund-com-generator-files-api-openapi.yml
- aid: fastgstrefund-com:fastgstrefund-com-generators-api
  name: Fast GST Refund Generators API
  description: The Generators API from Fast GST Refund — 2 operation(s) for generators.
  humanURL: https://fastgstrefund.com/guides/
  baseURL: https://fastgstrefund.com
  tags:
  - Generators
  properties:
  - type: OpenAPI
    url: openapi/fastgstrefund-com-generators-api-openapi.yml
x-enrichment:
  date: '2026-11-08'
  status: enriched
  artifacts_added: 22
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Fast GST Refund API — frequently asked questions

Does Fast GST Refund have an API?

Yes. APIs.io lists 3 APIs from Fast GST Refund, including Fast GST Refund Checklist API, Fast GST Refund Generator Files API and Fast GST Refund Generators API.

Is there an OpenAPI specification for the Fast GST Refund API?

Yes. APIs.io indexes 3 OpenAPI specifications for Fast GST Refund, each linked for download from this page.

How do I authenticate with the Fast GST Refund API?

Fast GST Refund documents its authentication (oauth2 · 1 scheme). The details are profiled on APIs.io as Fast GST Refund Authentication.

Is the Fast GST Refund API ready for AI agents?

Fast GST Refund has a Kin Score of 34.3 out of 100 (thin) and an Agent Readiness score of 35.2 (agent-ready), scored by API Evangelist on 2026-11-13.

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