GunTab website screenshot

GunTab

GunTab is a payment processing service designed for online firearms marketplaces and retail websites. The GunTab API enables businesses to integrate safe and convenient firearms transaction payments into their platforms.

GunTab publishes 4 APIs on the APIs.io network, including FFLs API, Invoices API, Users API, and 1 more. Tagged areas include E-Commerce, Firearms, Marketplace, and Payments.

GunTab’s developer surface includes authentication, documentation, signup flow, and 3 more developer resources.

🌐 Visit website 📡 Source on GitHub
33.6/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serve⚡ Free to try
4 APIs
E-CommerceFirearmsMarketplacePayments

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 33.6/100 · thin
Contract Quality 13.8 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.1 / 13
Governance 0.0 / 12
Discoverability 6.5 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/guntab: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 4

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

GunTab FFLs API

Federal Firearms License verification

GunTab Invoices API

Payment request lifecycle management

GunTab Users API

Marketplace user lookup

GunTab Webhooks API

Webhook subscription management (deprecated)

Open Collections 1

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

GunTab REST API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Guntab Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Guntab Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Guntab Finops

FINOPS

Security Posture 2

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

Guntab Authentication

apiKey · 1 scheme

SECURITY

Guntab Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Guntab Agentic Access

11 operations · 8 acting

11 operations · 8 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Signup
Signup

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: guntab
name: GunTab
description: GunTab is a payment processing service designed for online firearms marketplaces and retail websites. The GunTab
  API enables businesses to integrate safe and convenient firearms transaction payments into their platforms.
type: Index
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/guntab.png
tags:
- E-Commerce
- Firearms
- Marketplace
- Payments
url: https://raw.githubusercontent.com/api-evangelist/guntab/refs/heads/main/apis.yml
created: '2025-02-17'
modified: '2026-05-19'
specificationVersion: '0.19'
apis:
- aid: guntab:guntab-ffls-api
  name: GunTab FFLs API
  description: Federal Firearms License verification
  humanURL: https://www.guntab.com/documentation/rest-api
  baseURL: https://api.guntab.com/v1
  tags:
  - FFLs
  properties:
  - type: OpenAPI
    url: openapi/guntab-ffls-api-openapi.yml
  - type: Documentation
    url: https://www.guntab.com/documentation/rest-api
  - type: Authentication
    url: https://www.guntab.com/documentation/rest-api#authentication
- aid: guntab:guntab-invoices-api
  name: GunTab Invoices API
  description: Payment request lifecycle management
  humanURL: https://www.guntab.com/documentation/rest-api
  baseURL: https://api.guntab.com/v1
  tags:
  - Invoices
  properties:
  - type: OpenAPI
    url: openapi/guntab-invoices-api-openapi.yml
  - type: Documentation
    url: https://www.guntab.com/documentation/rest-api
  - type: Authentication
    url: https://www.guntab.com/documentation/rest-api#authentication
- aid: guntab:guntab-users-api
  name: GunTab Users API
  description: Marketplace user lookup
  humanURL: https://www.guntab.com/documentation/rest-api
  baseURL: https://api.guntab.com/v1
  tags:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/guntab-users-api-openapi.yml
  - type: Documentation
    url: https://www.guntab.com/documentation/rest-api
  - type: Authentication
    url: https://www.guntab.com/documentation/rest-api#authentication
- aid: guntab:guntab-webhooks-api
  name: GunTab Webhooks API
  description: Webhook subscription management (deprecated)
  humanURL: https://www.guntab.com/documentation/rest-api
  baseURL: https://api.guntab.com/v1
  tags:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/guntab-webhooks-api-openapi.yml
  - type: Documentation
    url: https://www.guntab.com/documentation/rest-api
  - type: Authentication
    url: https://www.guntab.com/documentation/rest-api#authentication
common:
- type: AgenticAccess
  url: agentic-access/guntab-agentic-access.yml
- type: DomainSecurity
  url: security/guntab-domain-security.yml
- type: Authentication
  url: authentication/guntab-authentication.yml
- type: Website
  url: https://www.guntab.com/
- type: Documentation
  url: https://www.guntab.com/documentation/rest-api
- type: Signup
  url: https://www.guntab.com/sign-up
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com