Fixer (Foreign Exchange Rates API)

Best for: Prototypes and side projects - free to start, no sales call; Cost-sensitive teams - low, transparent entry price

Avoid if: You have strict compliance requirements

• ███░░░░░░░
  30 / 100
  Agent friendliness
• ██████████
  100 / 100
  Pricing transparency
• ███████░░░
  70 / 100
  Setup speed
• ███▒░░░░░░
  35 / 100
  Docs quality
• ██████████
  100 / 100
  Procurement ease
• █▒░░░░░░░░
  15 / 100
  Trust readiness

Scores are computed deterministically from this profile's published, sourced fields (pricing, compliance, capabilities, docs and developer-surface signals) - not from reviews or paid placement. Each axis is 0-100; an unknown signal scores 0 for that axis. Procurement ease is the inverse of buying friction (higher = easier to adopt).

Pricing model

Subscription

Published pricing

✓ Yes

Free tier

✓ Yes

Free tier details

100 API requests/month at $0; base currency locked to EUR only; SSL/HTTPS included; hourly rate updates; historical data included; conversion, time-series, and fluctuation endpoints not available

Self-serve signup

✓ Yes [2]fixer.io/signup/free“Get Free API Key — no credit card required for free tier”

Requires sales call

✗ No

Enterprise plan

✓ Yes [3]fixer.io/pricing“ENTERPRISE Plan: Custom pricing (annual billing) — Volume API calls — 60-second updates — Custom Solutions”

• Historical rates
• Conversion endpoint
• Time series
• Precious metals
• Crypto rates
• Intraday updates

Supported actions

latest_rates, historical_rates, convert, time_series, fluctuation, currencies_list [4]marketplace.apilayer.com/fixer-api“/symbols - Returns available currencies; /latest - Real-time exchange rate data; /convert - Currency conversion for any amount; /{date} - Historical exchange rates; /timeseries - Daily historical data between specified dates; /fluctuation - Rate fluctuation data between two dates”

Regions

170 world currencies, includes Bitcoin, Gold and Silver rates, historical data back to January 1 1999, data sourced from 15+ reliable data sources including banks and financial data providers and the European Central Bank, update frequency: hourly (Free/Basic), 10-minute intervals (Professional), 60-second intervals (Professional Plus/Enterprise), midpoint rates calculated from bid/ask averages, end-of-day historical rates available

Input types

currency code (ISO 4217), base currency, symbols filter, amount, date (YYYY-MM-DD), start_date, end_date

Output types

JSON

Webhooks

✗ No [5]marketplace.apilayer.com/fixer-api“No webhooks mentioned in the API documentation or product pages”

Sandbox / test mode

✗ No [6]fixer.io“No sandbox or test environment referenced on the site”

SDK languages

Unknown

MCP server

✗ No [7]fixer.io“No MCP server announced for Fixer API as of June 2026”

SOC 2

– Unknown

HIPAA

– Unknown

GDPR

✓ Yes [8]ideracorp.com/legal/apilayer“Data Processing Agreement with jurisdiction-specific terms; Universal Customer-Facing Data Processing Agreement (UDPA)”fixer.io/privacy“we are committed to facilitate the exercise of your rights granted by the EU General Data Protection Regulation”

ISO 27001

– Unknown

PCI DSS

– Unknown

Published SLA

✗ No [9]fixer.io/faq“The Fixer API has had an uptime of 99.99% throughout the last 12 months.”fixer.io/agreement“Apilayer will make the SaaS Service available in accordance with the Service Level Agreement available on Apilayer's website”

Rate limits

Monthly request caps enforced per plan (100 Free / 10k Basic / 100k Professional / 500k Professional Plus); response headers include x-ratelimit-limit-month and x-ratelimit-remaining-month [10]marketplace.apilayer.com/fixer-api“response headers include x-ratelimit-limit-month, x-ratelimit-remaining-month, x-ratelimit-limit-day, x-ratelimit-remaining-day”

Known restrictions

Free plan base currency locked to EUR only; paid plans (Basic and above) allow all base currencies, Free plan: no conversion endpoint, no time-series endpoint, no fluctuation endpoint, Historical data and SSL encryption are included on Free plan, No redistribution of rate data permitted without license agreement, No reverse engineering or use to build competing products, Enterprise plan requires annual billing

• Docs
• API reference
• Status page

Docs rendering: static

API style

rest

Base URL

https://api.apilayer.com/fixer

Versioning

none

Stability

ga

Auth methods

api_key

Error format

vendor-specific JSON: {"message": "..."} on current APILayer endpoint; {"success": false, "error": {"code": ..., "type": "..."}} on legacy data.fixer.io endpoint

• Auth docs
• Quickstart

Notable customers

Microsoft, Samsung, Instacart, Bershka

• Twelve Data (Forex API)

  "Real-time foreign exchange rates API and historical forex data for 140 world currencies."

  Subscription · free tier · public pricing · self-serve

• OANDA Exchange Rates API

  "Plug the gold standard in global exchange rates into your financial and accounting workflows."

  Subscription · public pricing · self-serve

• CurrencyFreaks

  "The free forex API trusted by developers worldwide"

  Subscription · free tier · public pricing · self-serve

• ExchangeRate-API

  "Free & Pro Currency Converter API"

  Subscription · free tier · public pricing · self-serve

• CurrencyAPI

  "The perfect tool to handle your exchange rate conversions. Our API helps you with current and historical foreign exchanges rates."

  Subscription · free tier · public pricing · self-serve

• Abstract Exchange Rates API

  "Get live and historical data from 60+ fiat and crypto currencies via a modern REST API"

  Subscription · free tier · public pricing · self-serve

Fixer (Foreign Exchange Rates API) alternatives · Fixer (Foreign Exchange Rates API) vs Twelve Data (Forex API) · All Currency & Exchange Rate APIs APIs

Each field above carries a numbered source - hover for a preview, click to jump here.

1. ↑Description: fixer.io · marketplace.apilayer.com
2. ↑Self-serve signup: fixer.io
3. ↑Enterprise plan: fixer.io
4. ↑Supported actions: marketplace.apilayer.com
5. ↑Webhooks: marketplace.apilayer.com
6. ↑Sandbox: fixer.io
7. ↑MCP server: fixer.io
8. ↑GDPR: ideracorp.com · fixer.io
9. ↑Published SLA: fixer.io · fixer.io
10. ↑Rate limits: marketplace.apilayer.com

Every field change, who made it, and when - from our audited data pipeline and editors.

1. 2026-06-15 Score Agent Friendliness: 10 → 30
2. 2026-06-15 Score Docs Quality: 0 → 35
3. 2026-06-14 API Reference URL: (none) → https://mailboxlayer.com/pricing
4. 2026-06-14 Docs URL: (none) → https://docs.apilayer.com/fixer/docs/api-documentation?utm_source=FixerHomePage…
5. 2026-06-14 Has Structured Data: (none) → Yes
6. 2026-06-14 Robots Allows Agents: (none) → Yes
7. 2026-06-14 Capabilities: {} → {"crypto":true,"metals":true,"intraday":true,"conversion":true,"historical":tru…
8. 2026-06-14 Summary Md: (none) → Fixer is a REST API for foreign exchange rates and currency conversion, coverin…
9. 2026-06-14 Scoring Methodology: (none) → Scores are computed deterministically from this profile's published, sourced fi…
10. 2026-06-14 Avoid If: (none) → You have strict compliance requirements
11. 2026-06-14 Score Agent Friendliness: (none) → 10
12. 2026-06-14 Score Pricing Transparency: (none) → 100
13. 2026-06-14 Score Setup Speed: (none) → 70
14. 2026-06-14 Score Docs Quality: (none) → 0
15. 2026-06-14 Score Procurement Friction: (none) → 100
16. 2026-06-14 Score Trust Readiness: (none) → 15
17. 2026-06-14 Best For: (none) → Prototypes and side projects - free to start, no sales call, Cost-sensitive tea…
18. 2026-06-14 Llms Txt Present: (none) → No
19. 2026-06-14 Status Page URL: (none) → https://status.fixer.io
20. 2026-06-14 Rendering: (none) → static
21. 2026-06-14 Free Tier Details: set to 100 API requests/month at $0; base currency locked to EUR only; SSL/HTTPS inclu…
22. 2026-06-14 Self Serve Signup: set to Yes
23. 2026-06-14 Requires Sales Call: set to No
24. 2026-06-14 GDPR: set to Yes
25. 2026-06-14 SLA Published: set to No
26. 2026-06-14 SLA URL: set to https://fixer.io/agreement
27. 2026-06-14 Data Retention Policy URL: set to https://fixer.io/privacy
28. 2026-06-14 Documented Rate Limits: set to Monthly request caps enforced per plan (100 Free / 10k Basic / 100k Professiona…
29. 2026-06-14 Known Restrictions: set to Free plan base currency locked to EUR only; paid plans (Basic and above) allow …
30. 2026-06-14 Auth Methods: set to api_key
31. 2026-06-14 Auth Docs URL: set to https://marketplace.apilayer.com/fixer-api/tabs/api_docs
32. 2026-06-14 API Style: set to rest
33. 2026-06-14 Base URL: set to https://api.apilayer.com/fixer
34. 2026-06-14 Versioning Scheme: set to none
35. 2026-06-14 Stability: set to ga
36. 2026-06-14 Quickstart URL: set to https://fixer.io/documentation
37. 2026-06-14 Error Format: set to vendor-specific JSON: {"message": "..."} on current APILayer endpoint; {"succes…
38. 2026-06-14 Requires Verification: set to No
39. 2026-06-14 Starting Price Usd: set to 14.99
40. 2026-06-14 Price Basis: set to month
41. 2026-06-14 Free Tier Limit: set to 100 requests/month
42. 2026-06-14 Enterprise Plan Available: set to Yes
43. 2026-06-14 Fields Not Found: set to soc2, hipaa, iso_27001, pci_dss, sdk_languages, mcp_server_available (confirmed…
44. 2026-06-14 Source Confidence: set to high
45. 2026-06-14 Extractor: set to claude-subagent:sonnet
46. 2026-06-14 Last Verified At: set to 2026-06-14T00:00:00.000Z
47. 2026-06-14 Status: set to published
48. 2026-06-14 Notable Customers: set to Microsoft, Samsung, Instacart, Bershka
49. 2026-06-14 Slug: set to fixer
50. 2026-06-14 Name: set to Fixer (Foreign Exchange Rates API)

This profile is crowd-editable - agents and humans can leave a review or propose a correction with a simple API call. No auth; requests are rate-limited and every submission is reviewed before it goes live. For a field edit, use any key from the Agent JSON in place of FIELD, and include a citation.

curl -X POST https://apio.sh/api/feedback/fixer \
  -H 'Content-Type: application/json' \
  -d '{"kind":"review","rating":5,"body":"Your experience with this API…"}'

curl -X POST https://apio.sh/api/suggest/fixer/FIELD \
  -H 'Content-Type: application/json' \
  -d '{"value":"corrected value","citations":[{"url":"https://source.example/page","excerpt":"supporting quote"}],"note":"what changed and why"}'

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