GraphQL Scalars website screenshot

GraphQL Scalars

Library from The Guild providing 80+ production-ready custom GraphQL scalar types including DateTime, BigInt, EmailAddress, URL, UUID, IBAN, IPv4, JSONObject, and more — enabling precise type-safe GraphQL schemas with no vendor lock-in.

GraphQL Scalars publishes 1 API on the APIs.io network. Tagged areas include GraphQL, Scalars, TypeScript, Open Source, and Type Safety.

GraphQL Scalars’ developer surface includes documentation, pricing, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub
24.1/100 emerging ▲ 10.3 Agent 19/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
1 APIs
GraphQLScalarsTypeScriptOpen SourceType SafetySchema

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 24.1/100 · emerging
Contract Quality 12.0 / 25
Developer Ergonomics 1.7 / 20
Commercial Clarity 2.1 / 20
Operational Transparency 0.7 / 13
Governance 0.0 / 12
Discoverability 7.6 / 10
Agent readiness — 19/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
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 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/graphql-scalars: 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 1

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

GraphQL Scalars API

Open-source TypeScript/JavaScript library providing 80+ custom GraphQL scalar types (DateTime, EmailAddress, UUID, IPv4, IBAN, JSONObject, etc.) for building precise, type-safe ...

GraphQL 1

GraphQL schemas published by this provider.

GraphQL Scalars — GraphQL Reference

GraphQL Scalars provides custom scalar type definitions that can be added to any GraphQL schema. The scalars are defined using the standard `scalar` keyword and are fully compat...

GRAPHQL

Security Posture 1

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

Graphql Scalars Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 Plans
Plans
 FinOps
FinOps

Company 2

The organization behind the API

Website
Website
 LinkedIn
LinkedIn

Source (apis.yml)

apis.yml Raw ↑ 
aid: graphql-scalars
name: GraphQL Scalars
description: Library from The Guild providing 80+ production-ready custom GraphQL scalar types including DateTime, BigInt,
  EmailAddress, URL, UUID, IBAN, IPv4, JSONObject, and more — enabling precise type-safe GraphQL schemas with no vendor lock-in.
type: Index
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/graphql-scalars.png
url: https://the-guild.dev/graphql/scalars
baseURL: https://the-guild.dev/graphql/scalars
created: 2026-06-14
modified: 2026-06-14
specificationVersion: '0.19'
tags:
- GraphQL
- Scalars
- TypeScript
- Open Source
- Type Safety
- Schema
apis:
- aid: graphql-scalars:api
  name: GraphQL Scalars API
  description: Open-source TypeScript/JavaScript library providing 80+ custom GraphQL scalar types (DateTime, EmailAddress,
    UUID, IPv4, IBAN, JSONObject, etc.) for building precise, type-safe GraphQL schemas compatible with any GraphQL server
    implementation.
  tags:
  - GraphQL
  - Scalars
  - TypeScript
  - Open Source
  humanURL: https://the-guild.dev/graphql/scalars/docs
  baseURL: https://the-guild.dev/graphql/scalars
  properties:
  - url: https://the-guild.dev/graphql/scalars/docs
    type: Documentation
  - url: graphql/graphql-scalars-graphql.md
    type: GraphQL
common:
- type: DomainSecurity
  url: security/graphql-scalars-domain-security.yml
- url: https://the-guild.dev/graphql/scalars
  type: Website
- url: https://the-guild.dev/graphql/scalars/docs
  type: Documentation
- url: https://www.linkedin.com/company/the-guild-software
  type: LinkedIn
- url: https://github.com/graphql-hive/graphql-scalars
  type: GitHubOrganization
- url: https://the-guild.dev/graphql/hive/pricing
  type: Pricing
- url: plans/graphql-scalars-plans.md
  type: Plans
- url: rate-limits/graphql-scalars-rate-limits.md
  type: RateLimits
- url: finops/graphql-scalars-finops.md
  type: FinOps
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com