Metals-API website screenshot

Metals-API

Metals-API provides a free, simple, and lightweight JSON API for current and historical precious metals rates and currency conversion. It supports real-time and historical data for gold, silver, platinum, palladium, and other metals in 170 world currencies.

Metals-API publishes 4 APIs on the APIs.io network, including Analytics API, Conversion API, Rates API, and 1 more. Tagged areas include Currency, Financial Data, Gold, Precious Metals, and Silver.

Metals-API’s developer surface includes authentication, developer portal, pricing, signup flow, and 3 more developer resources.

🌐 Visit website 📡 Source on GitHub
40.4/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemiumSelf serve⚡ Free to try
4 APIs
CurrencyFinancial DataGoldPrecious MetalsSilver

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 40.4/100 · thin
Contract Quality 14.9 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 4.1 / 13
Governance 0.0 / 12
Discoverability 7.4 / 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/metals-api: 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.

Metals-API Analytics API

Time series, fluctuation, and OHLC analytics.

Metals-API Conversion API

Currency and metal conversion endpoints.

Metals-API Rates API

Real-time and historical precious metals rates.

Metals-API Reference API

Symbols and reference data.

Open Collections 1

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

Metals-API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Metals Api Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Metals Api Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Metals Api Finops

FINOPS

Security Posture 2

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

Metals Api Authentication

apiKey · 1 scheme

SECURITY

Metals Api Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

Metals Api Agentic Access

9 operations

9 operations · 0 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Portal
Portal
 Signup
Signup

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

Commercial 1

Pricing, plans, and the legal terms of use

Pricing
Pricing

Company 1

The organization behind the API

LinkedIn
LinkedIn

Source (apis.yml)

apis.yml Raw ↑ 
aid: metals-api
name: Metals-API
description: Metals-API provides a free, simple, and lightweight JSON API for current and historical precious metals rates
  and currency conversion. It supports real-time and historical data for gold, silver, platinum, palladium, and other metals
  in 170 world currencies.
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/metals-api.png
tags:
- Currency
- Financial Data
- Gold
- Precious Metals
- Silver
url: https://raw.githubusercontent.com/api-evangelist/metals-api/refs/heads/main/apis.yml
created: '2025-03-01'
modified: '2026-05-19'
specificationVersion: '0.19'
apis:
- aid: metals-api:metals-api-analytics-api
  name: Metals-API Analytics API
  description: Time series, fluctuation, and OHLC analytics.
  humanURL: https://metals-api.com/
  baseURL: https://metals-api.com/api
  tags:
  - Analytics
  properties:
  - type: OpenAPI
    url: openapi/metals-api-analytics-api-openapi.yml
  - type: Documentation
    url: https://metals-api.com/documentation
  - type: GettingStarted
    url: https://metals-api.com/documentation#access_key
- aid: metals-api:metals-api-conversion-api
  name: Metals-API Conversion API
  description: Currency and metal conversion endpoints.
  humanURL: https://metals-api.com/
  baseURL: https://metals-api.com/api
  tags:
  - Conversion
  properties:
  - type: OpenAPI
    url: openapi/metals-api-conversion-api-openapi.yml
  - type: Documentation
    url: https://metals-api.com/documentation
  - type: GettingStarted
    url: https://metals-api.com/documentation#access_key
- aid: metals-api:metals-api-rates-api
  name: Metals-API Rates API
  description: Real-time and historical precious metals rates.
  humanURL: https://metals-api.com/
  baseURL: https://metals-api.com/api
  tags:
  - Rates
  properties:
  - type: OpenAPI
    url: openapi/metals-api-rates-api-openapi.yml
  - type: Documentation
    url: https://metals-api.com/documentation
  - type: GettingStarted
    url: https://metals-api.com/documentation#access_key
- aid: metals-api:metals-api-reference-api
  name: Metals-API Reference API
  description: Symbols and reference data.
  humanURL: https://metals-api.com/
  baseURL: https://metals-api.com/api
  tags:
  - Reference
  properties:
  - type: OpenAPI
    url: openapi/metals-api-reference-api-openapi.yml
  - type: Documentation
    url: https://metals-api.com/documentation
  - type: GettingStarted
    url: https://metals-api.com/documentation#access_key
common:
- type: AgenticAccess
  url: agentic-access/metals-api-agentic-access.yml
- type: DomainSecurity
  url: security/metals-api-domain-security.yml
- type: Authentication
  url: authentication/metals-api-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/zyla-labs
- type: Portal
  url: https://metals-api.com/
- type: Pricing
  url: https://metals-api.com/pricing
- type: Signup
  url: https://metals-api.com/signup
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com