# 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. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/alpha-vantage-vs-fred
- Markdown: https://www.anchorterminal.com/compare/alpha-vantage-vs-fred.md (~2,100 tokens)
- Slim: https://www.anchorterminal.com/compare/alpha-vantage-vs-fred.min.md (~780 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/alpha-vantage-vs-fred.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-09

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 Vantage: grade E, 41.3/100, rank #799 of 842. Markdown https://www.anchorterminal.com/tools/alpha-vantage.md · JSON https://www.anchorterminal.com/api/v1/tools/alpha-vantage.json
- FRED API: grade E, 42.7/100, rank #789 of 842. Markdown https://www.anchorterminal.com/tools/fred.md · JSON https://www.anchorterminal.com/api/v1/tools/fred.json

## 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

| Category | Weight | Alpha Vantage | FRED API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 30 | 38 | FRED API +8 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 46 | 43 | Alpha Vantage +3 |
| Agent ergonomics | 13% (16.2 this run) | 54 | 68 | FRED API +14 |
| Security & auth | 14% (17.5 this run) | 32 | 35 | FRED API +3 |
| Payments & pricing | 10% (12.5 this run) | 30 | 40 | FRED API +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 63 | 15 | Alpha Vantage +48 |
| Transparency & trust | 7% (8.8 this run) | 48 | 53 | FRED API +5 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **41.3 · E** | **42.7 · E** | |

## Facts side by side

| Fact | Alpha Vantage | FRED API |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Alpha Vantage Inc. | Federal Reserve Bank of St. Louis |
| Hosted endpoint | `https://www.alphavantage.co/query` | `https://api.stlouisfed.org` |
| Transports | HTTP, Streamable HTTP, stdio | HTTP |
| Auth | OAuth or key | API key |
| Pricing | Freemium | Free |
| x402 | no | no |
| Licence | Proprietary service under Alpha Vantage's Terms of Service. The MCP server, CLI and shared client in alphavantage/alpha_vantage_mcp are MIT | Proprietary service under the FRED Services Terms of Use. Some data series are third-party copyright |
| Read-only variant documented | yes | yes |
| llms.txt | no | no |
| MCP registry | `io.github.alphavantage/alpha_vantage_mcp` | not listed |
| Last release | 2026-10-03 | 2025-11-04 |
| Terms last updated | couldn't be read | no date given |
| Privacy policy last updated | couldn't be read | no date given |
| Customer content may train models | couldn't be read | not found in the text |
| Terms restrict automated access | couldn't be read | yes |
| Terms restrict benchmarking | couldn't be read | yes |
| Terms or service can change without notice | couldn't be read | yes |
| Arbitration or class-action waiver | couldn't be read | not found in the text |
| Popularity | 217 stars, 172 PyPI/wk | none |

## 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.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/alpha-vantage-vs-fred.json, and with the fewest tokens: https://www.anchorterminal.com/compare/alpha-vantage-vs-fred.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "alpha-vantage", "b": "fred"}`. From a terminal: `anchor compare alpha-vantage fred`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/alpha-vantage.json and https://www.anchorterminal.com/api/v1/tools/fred.json

## Other comparisons with Alpha Vantage or FRED API

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- [Alpha Vantage vs Massive (formerly Polygon.io)](https://www.anchorterminal.com/compare/alpha-vantage-vs-massive.md)
- [FRED API vs Massive (formerly Polygon.io)](https://www.anchorterminal.com/compare/fred-vs-massive.md)
- [Alpha Vantage vs Companies House API](https://www.anchorterminal.com/compare/alpha-vantage-vs-companies-house.md)
- [CoinDesk Data API vs FRED API](https://www.anchorterminal.com/compare/coindesk-data-api-vs-fred.md)