gunspec-io

A firearm database API for developers: specifications for over 8,500 guns, every figure sourced. The REST API offers endpoints for firearms, ammunition, manufacturers, and accessories, plus SDKs for popular languages and an MCP server. A free plan is available, with paid tiers for higher rate limits.

gunspec-io publishes 22 API contracts indexed on the APIs.io network, including Account API, Ammunition API, Calibers API, and 19 more. Tagged areas include Firearms, API, Database, Specifications, and SDK.

The gunspec-io catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

gunspec-io’s developer surface includes changelog, authentication, engineering blog, getting-started guide, API reference, documentation, pricing, and 28 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

70.8/100 exemplar Agent 43/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 2 Agent Skills

FirearmsAPIDatabaseSpecificationsSDK MCP

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 70.8/100 · exemplar

Contract Quality 13.9 / 21

Developer Ergonomics 10.4 / 17

Access Clarity 12.4 / 17

Operational Transparency 6.6 / 11

Contract Governance 8.1 / 10

Discoverability 5.6 / 9

Regulatory Posture 6.0 / 15

Agent readiness — 43/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 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

Pagination 5 / 5

Distinct Operations 3 / 3

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/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/gunspec-io/"><img src="https://apis.io/badge/gunspec-io/card.svg" alt="gunspec-io on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too

4 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 65.2 — up to +8.7 composite points
Developer Ergonomics scores 61.2 — up to +7.8 composite points
Access Clarity scores 73.2 — up to +5.4 composite points

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.

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/gunspec-io/apis.yml: open an issue on github.com/api-evangelist/gunspec-io 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 →

APIs 22

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

gunspec-io Account API

The authenticated account surface: your favorites, data reports, support tickets, webhook endpoints, and API usage. Requires an API key belonging to a user account.

gunspec-io Ammunition API

Specific ammunition loads per caliber, with ballistics calculation and bullet diagrams

gunspec-io Calibers API

Ammunition calibers, cartridge specifications, comparison, and family relationships

gunspec-io Categories API

Firearm categories (pistol, rifle, shotgun, etc.)

gunspec-io Changes API

What changed in the catalogue: records added, updated, removed and merged, with the fields that moved, as a list to read forward from and as RSS

gunspec-io Collections API

Publicly shared user collections

gunspec-io Compatibility API

Mount interfaces, the attachment catalog and what fits what: a firearm's resolved interfaces, the attachments that fit it (direct, through a named adapter, or curated), the fire...

gunspec-io Conflicts API

Armed conflicts referenced by firearm service history

gunspec-io Content API

Changelog entries and blog posts

gunspec-io Countries API

Countries of origin and national arsenals

gunspec-io Data Quality API

Field coverage and confidence metrics for the dataset

gunspec-io Firearm Analysis API

Derived views over firearms: family tree, similar models, adoption map, dimensions, game profile, and the cost of marching with them

gunspec-io Firearm Discovery API

Cross-catalog queries: random picks, top lists, head-to-head, and filters by feature, action, material, designer, or conflict

gunspec-io Firearms API

Firearms specifications, search, comparison, and related data

gunspec-io Game API

Game-balance analysis: balance report, tier list, matchups, role roster, and stat distribution

gunspec-io Game Stats API

Versioned game stats snapshots. Pin your game to a specific dataset version (e.g., "2025.1") so rebalancing changes don't break your build mid-development. List available versio...

gunspec-io Health API

Health and readiness checks

gunspec-io Manufacturers API

Firearm manufacturers, their products, timelines, and statistics

gunspec-io Papers API

Research papers: technical reports on the catalogue, each with its authors, review status and the requests that reproduce its figures

gunspec-io Releases API

New firearm models, each with the dates it was announced and first read, its alternate names and the sources that name it

gunspec-io Seller API

The seller layer: who stocks a catalogued part or firearm, and where to buy it. Public reads on any record, and a private surface for an Enterprise shop to keep its own listings...

gunspec-io Statistics API

Aggregate database statistics: coverage, distribution by category, era, country, material, and action type

Scroll for all 22

Agent Skills 2

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

list-firearms

AGENT SKILL

search-firearms

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Gunspec Io Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Gunspec Io Rate Limits

12 limits

RATE LIMITS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Gunspec Io Context

88 classes · 316 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

gunspec-io API Rules

18 rules · 10 errors 6 warnings 2 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Gunspec Io Openapi Overlay

0 actions · update

UNRECORDED

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

AmmunitionLoad

25 properties

JSON SCHEMA

ApiContractRun

14 properties

JSON SCHEMA

Caliber

39 properties

JSON SCHEMA

FirearmListItem

17 properties

JSON SCHEMA

FirearmSearchResult

20 properties

JSON SCHEMA

SdkVerificationRun

12 properties

JSON SCHEMA

Security Posture 3

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

Gunspec Io Authentication

2 schemes

SECURITY

Gunspec Io Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Gunspec Io Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Gunspec Io Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Gunspec Io Agentic Access

162 operations · 13 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

WellKnown

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Lifecycle

ErrorCatalog

Conformance

Scroll for all 7

Build 3

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 5

Authentication, authorization, and security posture

Security

Security

Authentication

Authentication

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 4

Status, limits, changes, and where to get help

RateLimits

ChangeLog

ChangeLog

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: gunspec-io
name: gunspec-io
description: 'A firearm database API for developers: specifications for over 8,500 guns, every figure sourced. The REST API
  offers endpoints for firearms, ammunition, manufacturers, and accessories, plus SDKs for popular languages and an MCP server.
  A free plan is available, with paid tiers for higher rate limits.'
url: https://artifacts.apis.io/gunspec-io/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Firearms
- API
- Database
- Specifications
- SDK
- MCP
image: https://gunspec.io/logo/logo.svg
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/gunspec-io-agentic-access.yml
- type: RateLimits
  url: rate-limits/gunspec-io-rate-limits.yml
- type: Plans
  url: plans/gunspec-io-plans-pricing.yml
- type: Spectral
  url: rules/gunspec-io-rules.yml
- type: JSONLD
  url: json-ld/gunspec-io-context.jsonld
- type: Vocabulary
  url: vocabulary/gunspec-io-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/gunspec-io-data-model.yml
- type: ChangeLog
  url: changelog/gunspec-io-changelog.yml
- type: Security
  url: https://gunspec.io/en/vulnerability-disclosure
- type: Authentication
  url: authentication/gunspec-io-authentication.yml
- type: Lifecycle
  url: lifecycle/gunspec-io-lifecycle.yml
- type: ErrorCatalog
  url: errors/gunspec-io-problem-types.yml
- type: Conformance
  url: conformance/gunspec-io-conformance.yml
- type: LLMsTxt
  url: llms/gunspec-io-llms.txt
- type: SecurityTxt
  url: well-known/gunspec-io-security.txt
- type: WellKnown
  url: well-known/gunspec-io-well-known.yml
- type: Hosts
  url: hosts/gunspec-io-hosts.yml
- type: Vendors
  url: vendors/gunspec-io-vendors.yml
- type: SDKs
  url: packages/gunspec-io-packages.yml
- type: Packages
  url: packages/gunspec-io-packages.yml
- type: TermsOfService
  url: https://gunspec.io/en/terms
- type: PrivacyPolicy
  url: https://gunspec.io/en/privacy
- type: Login
  url: https://app.gunspec.io/login
- type: GitHubOrganization
  url: https://github.com/gunspec
- type: ChangeLog
  url: https://docs.gunspec.io/en/changelog
- type: Blog
  url: https://blog.gunspec.io/en/blog
- type: GettingStarted
  url: https://docs.gunspec.io/en/sdk/getting-started
- type: APIReference
  url: https://docs.gunspec.io/llms.txt
- type: VulnerabilityDisclosure
  url: security/gunspec-io-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/gunspec-io-domain-security.yml
- type: Website
  url: https://gunspec.io/
- type: Documentation
  url: https://docs.gunspec.io
- type: Pricing
  url: https://gunspec.io/en/pricing
- type: Support
  url: https://discord.gg/QbN5GhwtgU
apis:
- aid: gunspec-io:gunspec-io-account-api
  name: gunspec-io Account API
  description: 'The authenticated account surface: your favorites, data reports, support tickets, webhook endpoints, and API
    usage. Requires an API key belonging to a user account.'
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-account-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-ammunition-api
  name: gunspec-io Ammunition API
  description: Specific ammunition loads per caliber, with ballistics calculation and bullet diagrams
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Ammunition
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-ammunition-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-calibers-api
  name: gunspec-io Calibers API
  description: Ammunition calibers, cartridge specifications, comparison, and family relationships
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Calibers
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-calibers-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-categories-api
  name: gunspec-io Categories API
  description: Firearm categories (pistol, rifle, shotgun, etc.)
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Categories
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-categories-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-changes-api
  name: gunspec-io Changes API
  description: 'What changed in the catalogue: records added, updated, removed and merged, with the fields that moved, as
    a list to read forward from and as RSS'
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Changes
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-changes-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-collections-api
  name: gunspec-io Collections API
  description: Publicly shared user collections
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Collections
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-collections-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-compatibility-api
  name: gunspec-io Compatibility API
  description: 'Mount interfaces, the attachment catalog and what fits what: a firearm''s resolved interfaces, the attachments
    that fit it (direct, through a named adapter, or curated), the firearms an attachment fits, and the platforms the inheritance
    runs through. Requires Builder tier or higher.'
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Compatibility
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-compatibility-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-conflicts-api
  name: gunspec-io Conflicts API
  description: Armed conflicts referenced by firearm service history
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Conflicts
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-conflicts-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-content-api
  name: gunspec-io Content API
  description: Changelog entries and blog posts
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Content
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-content-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-countries-api
  name: gunspec-io Countries API
  description: Countries of origin and national arsenals
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Countries
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-countries-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-data-quality-api
  name: gunspec-io Data Quality API
  description: Field coverage and confidence metrics for the dataset
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Data Quality
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-data-quality-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-firearm-analysis-api
  name: gunspec-io Firearm Analysis API
  description: 'Derived views over firearms: family tree, similar models, adoption map, dimensions, game profile, and the
    cost of marching with them'
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Firearm Analysis
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-firearm-analysis-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-firearm-discovery-api
  name: gunspec-io Firearm Discovery API
  description: 'Cross-catalog queries: random picks, top lists, head-to-head, and filters by feature, action, material, designer,
    or conflict'
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Firearm Discovery
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-firearm-discovery-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-firearms-api
  name: gunspec-io Firearms API
  description: Firearms specifications, search, comparison, and related data
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Firearms
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-firearms-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-game-api
  name: gunspec-io Game API
  description: 'Game-balance analysis: balance report, tier list, matchups, role roster, and stat distribution'
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Game
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-game-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-game-stats-api
  name: gunspec-io Game Stats API
  description: Versioned game stats snapshots. Pin your game to a specific dataset version (e.g., "2025.1") so rebalancing
    changes don't break your build mid-development. List available versions, then query firearms stats within a frozen snapshot.
    Requires Builder tier or higher.
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Game Stats
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-game-stats-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-health-api
  name: gunspec-io Health API
  description: Health and readiness checks
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-health-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-manufacturers-api
  name: gunspec-io Manufacturers API
  description: Firearm manufacturers, their products, timelines, and statistics
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Manufacturers
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-manufacturers-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-papers-api
  name: gunspec-io Papers API
  description: 'Research papers: technical reports on the catalogue, each with its authors, review status and the requests
    that reproduce its figures'
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Papers
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-papers-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-releases-api
  name: gunspec-io Releases API
  description: New firearm models, each with the dates it was announced and first read, its alternate names and the sources
    that name it
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Releases
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-releases-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-seller-api
  name: gunspec-io Seller API
  description: 'The seller layer: who stocks a catalogued part or firearm, and where to buy it. Public reads on any record,
    and a private surface for an Enterprise shop to keep its own listings from a server. GunSpec never takes the order: an
    offer links out, and these endpoints hold no basket, payment or customer.'
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Seller
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-seller-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
- aid: gunspec-io:gunspec-io-statistics-api
  name: gunspec-io Statistics API
  description: 'Aggregate database statistics: coverage, distribution by category, era, country, material, and action type'
  humanURL: https://docs.gunspec.io/en/api/firearms
  baseURL: https://api.gunspec.io
  tags:
  - Statistics
  properties:
  - type: OpenAPI
    url: openapi/gunspec-io-statistics-api-openapi.yml
  - type: Documentation
    url: https://docs.gunspec.io
  - type: JSONSchema
    url: json-schema/gunspec-io-api-contract-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-caliber-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-sdk-verification-run-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-ammunition-load-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-list-item-schema.json
  - type: JSONSchema
    url: json-schema/gunspec-io-firearm-search-result-schema.json
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 42
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

gunspec-io API — frequently asked questions

Does gunspec-io have an API?

Yes. APIs.io lists 22 APIs from gunspec-io, including gunspec-io Account API, gunspec-io Ammunition API and gunspec-io Calibers API, and 19 more.

Is there an OpenAPI specification for the gunspec-io API?

Yes. APIs.io indexes 22 OpenAPI specifications for gunspec-io, each linked for download from this page.

How do I authenticate with the gunspec-io API?

gunspec-io uses bearer-token authentication (2 schemes). The details are profiled on APIs.io as Gunspec Io Authentication.

How much does the gunspec-io API cost?

APIs.io lists 4 pricing plans for gunspec-io, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the gunspec-io API ready for AI agents?

gunspec-io has a Kin Score of 70.8 out of 100 (exemplar) and an Agent Readiness score of 43.4 (agent-ready), scored by API Evangelist on 2026-10-31.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/gunspec-io"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/gunspec-io/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/gunspec-io/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.