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Fathom — Macroeconomic Data API

https://fsthum.vercel.app/api/bulk
● healthy ai

Free macroeconomic data API powered by FRED. 816,000+ economic time series. GDP, inflation, unemployment, interest rates, and more.

Category
ai
Chains
base, eip155:8453
Price
$0.2500–$0.4000 USDC

Quality grade

How grading works
B 58.9 / 100
Availability 20.0 / 20
Endpoint responded (HTTP 402)
Payability 15.0 / 15
  • ✓ Answers a real HTTP 402 challenge
  • ✓ Publishes a /.well-known/x402 descriptor
  • ✓ Payment address on record
  • ✓ Settlement network declared
  • ✓ Price declared
Demand 0.0 / 35
0 distinct payers, 0 USDC transfers in the last 30 days; the wallet is shared by 6 listings, so each is credited 1/6
Performance 9.8 / 10
Last probe answered in 243 ms (full marks at 200 ms or less)
Readiness 14.1 / 15
Agent readiness 94/100
Owner verified 0.0 / 5
Nobody has claimed this listing yet
Endpoint last checked 18 h ago. On-chain activity last read 3 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass. This grade sets search order and leaderboards; the readiness score below is shown for reference only.

x402 readiness

A · 94/100

Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here B, 58.9/100), which weighs availability, payability and on-chain demand. How the two differ

Valid payment requirements 10/10 Payment requirements carry a payee, a mainnet network and a price.
Live 402 challenge 25/25 Paid endpoint answers with an HTTP 402 challenge (243 ms).
x402 version 10/10 Speaks x402 v2.
Signed descriptor n/a No x402 standard defines a signed descriptor.
Uptime (30 days) 15/15 32/32 probes succeeded over 30 days (100%).
Resource declaration 10/10 Declares 23 paid resource(s).
Verified identity 5/10 Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.
Freshness + modern flags 5/5 seen in a source within 7 days; declares x402.
Security declaration n/a Payment is the access control for an x402 resource.
Applicable criteria total 85 points, scaled to 100.
Responsiveness: Responsive (243 ms; bands ≤2.5 s, ≤5 s, ≤8 s, slower; penalty only).
Payment evidence: x402_challenge — We sent a request and got a live HTTP 402 challenge. Also: x402_manifest, catalog_listing. Qualifies the payment claim; adds no points.
Measured 2026-11-11.
Nine criteria, the same as the A2A readiness score, read from our daily probe of the paid endpoint, its payment requirements and 30-day probe history. Signed descriptor and security declaration are n/a for x402 (payment is the access control), as is an x402 version we have not observed; the remaining points are scaled to 100. Grades: A>=90, B>=75, C>=60, D>=40, F<40. It also feeds 15 points of the x402 quality grade.

Compared with peers

Against 10,082 reachable x402 APIs in our daily snapshot (2026-11-12 06:46 UTC). Display only; it does not change search order.

Readiness
Higher than 95% of peers
This listing 94 · peer median 78
Latency
Faster than 43% of peers
This listing 243 ms · peer median 205 ms

Where it loses the most points, and how to win them back

  • Verified identity −5 — Claim the listing and prove control of its domain.
    Now: Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.

How many agent tools actually work · All statistics

Paid endpoints

23 resource(s) advertised by this origin. Each price below is that resource's own x402 price; the headline price is the range across them.

https://fsthum.vercel.app/api/bulk $0.3500 / call

Multi-series fetch in one call

https://fsthum.vercel.app/api/calendar $0.2500 / call

Economic release calendar

https://fsthum.vercel.app/api/categories $0.3500 / call

Browse FRED data categories

https://fsthum.vercel.app/api/category-series $0.4000 / call

Series within a FRED category

https://fsthum.vercel.app/api/category-tags $0.3500 / call

Tags for a FRED category

https://fsthum.vercel.app/api/category-tree $0.3500 / call

Browse FRED category tree

https://fsthum.vercel.app/api/compare $0.3500 / call

Compare 2-5 series side by side

https://fsthum.vercel.app/api/latest $0.3500 / call

Latest value for a FRED series

https://fsthum.vercel.app/api/observations $0.4000 / call

Get economic data observations for any FRED series

https://fsthum.vercel.app/api/popular $0.3500 / call

20 most-watched macroeconomic indicators

https://fsthum.vercel.app/api/related $0.3500 / call

Related categories for a series

https://fsthum.vercel.app/api/release-dates $0.4000 / call

Release dates for a FRED release

https://fsthum.vercel.app/api/release-series $0.4000 / call

Series within a data release

https://fsthum.vercel.app/api/releases $0.4000 / call

Federal Reserve data release schedule

https://fsthum.vercel.app/api/search $0.4000 / call

Search 816,000+ FRED economic time series

https://fsthum.vercel.app/api/search-tags $0.3500 / call

Search FRED tags

https://fsthum.vercel.app/api/series $0.4000 / call

Get FRED series metadata

https://fsthum.vercel.app/api/series-tags $0.3500 / call

Tags for a FRED series

https://fsthum.vercel.app/api/snapshot $0.4000 / call

Dashboard of 10 key US economic indicators

https://fsthum.vercel.app/api/sources $0.3500 / call

FRED data sources list

How to call

cURL · x402-fetch / x402-axios will auto-handle 402
curl -sS -i -X GET https://fsthum.vercel.app/api/bulk  # expect HTTP 402 Payment Required (about $0.25/call)
/.well-known/x402.json
https://fsthum.vercel.app/.well-known/x402

Listed in

Directories this entry was found in.

x402scan since 2026-09-13