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Head to head · Data markets · October 2026 research run

Alpha Vantage vs FRED API

FRED API scores 42.7 (E) on agent readiness against Alpha Vantage's 41.3 (E), and leads in 5 of 7 scored categories. Alpha Vantage leads on maintenance & community. Both do data markets.

Alpha VantageAlpha Vantage Inc. · HTTP API E41.3/100#798 of 841 FRED APIFederal Reserve Bank of St. Louis · HTTP API E42.7/100#788 of 841

Which one, for what

Alpha Vantage E

Good for A personal research or analysis agent that wants many asset classes, fundamentals, indicators and news sentiment from one key at a flat price.

Ahead on

  • Maintenance & community, 63 against 15

Also in its favour

  • Runs on your own machine

Watch for

The REST key is documented only as apikey= in the query string, with no scopes and no self-service rotation found

FRED API E

Good for Looking up US and international macroeconomic series, their metadata and their revision history in a live session.

Ahead on

  • Reliability, 38 against 30
  • Agent ergonomics, 68 against 54
  • Payments & pricing, 40 against 30
  • Transparency & trust, 53 against 48

Also in its favour

  • Free to start without a card

Watch for

The FRED Services Terms of Use forbid using the API to develop or train any AI or machine-learning system, and forbid storing, caching or archiving FRED content

Score by category

CategoryWeight this runAlpha VantageFRED APIEdge
Reliability16%203038FRED API +8
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.24643Alpha Vantage +3
Agent ergonomics13%16.25468FRED API +14
Security & auth14%17.53235FRED API +3
Payments & pricing10%12.53040FRED API +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86315Alpha Vantage +48
Transparency & trust7%8.84853FRED API +5
Negative events≤1500
Total41.3 · E42.7 · E

Facts side by side

FactAlpha VantageFRED API
KindHTTP APIHTTP API
VendorAlpha Vantage Inc.Federal Reserve Bank of St. Louis
Hosted endpointhttps://www.alphavantage.co/queryhttps://api.stlouisfed.org
TransportsHTTP, Streamable HTTP, stdioHTTP
AuthOAuth or keyAPI key
PricingFreemiumFree
x402nono
LicenceProprietary service under Alpha Vantage's Terms of Service. The MCP server, CLI and shared client in alphavantage/alpha_vantage_mcp are MITProprietary service under the FRED Services Terms of Use. Some data series are third-party copyright
Read-only variant documentedyesyes
llms.txtnono
MCP registryio.github.alphavantage/alpha_vantage_mcpnot listed
Last release2026-10-032025-11-04
Terms last updatedcouldn't be readno date given
Privacy policy last updatedcouldn't be readno date given
Customer content may train modelscouldn't be readnot found in the text
Terms restrict automated accesscouldn't be readyes
Terms restrict benchmarkingcouldn't be readyes
Terms or service can change without noticecouldn't be readyes
Arbitration or class-action waivercouldn't be readnot found in the text
Popularity217 stars, 172 PyPI/wknone

Verdicts

Alpha Vantage

One GET endpoint covers about 130 documented functions, with a free key at 25 requests a day and an official MCP server whose tools are all marked read-only. The REST key travels only in the query string, errors come back as HTTP 200 with a text message, and no status page, SLA or OpenAPI document was found.

FRED API

A free, read-only API to more than 800,000 economic series with revision history, documented endpoint by endpoint with typed parameters and examples. The terms forbid storing or caching FRED content and using the API to develop or train AI systems, version 1 carries the key in the URL, and no status page or OpenAPI file was found.

Before you call either

Alpha Vantage

  1. Check every 200 response for Error Message, Information or Note keys before parsing data. The API does not signal failures or limits by status code
  2. Budget 25 requests a day on a free key. Real-time, 15-minute delayed and intraday US data, index data and several indicators need a premium plan
  3. Keep outputsize=compact unless full history is needed, and ask for datatype=csv on long series to cut tokens
  4. Use the hosted MCP server with OAuth at https://mcp.alphavantage.co/mcp. The ?apikey= MCP URL is marked deprecated
  5. Confirm the owner's use is personal and non-commercial, or that a commercial agreement exists, before acting for a business

FRED API

  1. Add file_type=json to every version 1 request. The default is XML
  2. Find a series with fred/series/search?search_text=, then read it with fred/series/observations?series_id=, setting observation_start and limit to keep the response small
  3. Treat the value . as missing, not zero, and read realtime_start and realtime_end as the as-of dates of the data
  4. Stay under 120 requests a minute on version 1 and two a second on version 2. Repeated 429s can bring a temporary block
  5. Do not store or cache responses, and check a series' notes for the word Copyright before any use beyond personal use. The terms forbid the first and require the second

Questions

Which is better for AI agents, Alpha Vantage or FRED API?

FRED API scores 42.7 (E) on agent readiness against Alpha Vantage's 41.3 (E), and leads in 5 of 7 scored categories. Alpha Vantage leads on maintenance & community.

Do Alpha Vantage and FRED API need an API key?

Alpha Vantage takes an API key or an OAuth sign-in. FRED API needs an API key.

Can an agent call Alpha Vantage and FRED API without installing anything?

Yes. Alpha Vantage has a hosted endpoint at https://www.alphavantage.co/query and FRED API at https://api.stlouisfed.org.

Other comparisons with Alpha Vantage or FRED API

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