StableNinja alternatives

15 x402 data APIs compared with StableNinja: the price per call read from each 402, x402 grade, uptime and median response time from our own daily unpaid checks.

StableNinja for reference

x402 access to selected OpenWebNinja data APIs, such as Yelp business search.

Up · x402 grade A (90/100) · 100% up (14/14 checks) · $0.01 per call in its 402 · 273 ms median

StableNinja review · Is StableNinja down?

Top ranked

Fanfare

Grade A (95/100), up

Lowest price per call in its 402

Fanfare

$0.001, below StableNinja's $0.01

Fastest median response

Storm Station 247

85 ms (StableNinja: 273 ms)

15 StableNinja alternatives compared

Ranked by x402 grade, then uptime from our daily checks, then x402 score and response time. Price is shown but never used for ranking; “lower” or “higher” compares with StableNinja’s $0.01 per call. Paid placement never changes the order.

#	Listing and why pick it	Status	x402 grade	Uptime (checks so far)	Price in 402	Response (median)
1	Fanfare status Lower price per call ($0.001 vs $0.01); higher x402 score (95 vs 90) Sports data API for agents (schedules, player stats, trip bundles across US leagues), paid per request in…	Up	A (95/100)	100% (14/14)	$0.001 (lower)	183 ms
2	x402ai status Higher x402 score (95 vs 90) A few AI inference endpoints gated by x402: agents send a signed USDC authorization and get a result.	Up	A (95/100)	100% (14/14)	$0.01	281 ms
3	Swarmio status Higher x402 score (95 vs 90) Deep-research API that produces research reports and plans on request.	Up	A (95/100)	100% (14/14)	$0.01	303 ms
4	PayPerByte status Lower price per call ($0.005 vs $0.01); higher x402 score (95 vs 90) Live data feeds and oracles for agents, paid per call in USDC on Base, with signed attestations on responses.	Up	A (95/100)	100% (14/14)	$0.005 (lower)	451 ms
5	Coinslot status Lower price per call ($0.003 vs $0.01); higher x402 score (95 vs 90) Small APIs that agents pay for per call over x402, with no signup.	Up	A (95/100)	100% (14/14)	$0.003 (lower)	497 ms
6	magent status Lower price per call ($0.005 vs $0.01); faster median response (201 ms vs 273 ms) Cited clinical calculators and medical code lookup for agents: published-formula arithmetic (BMI, kidney,…	Up	A (90/100)	100% (14/14)	$0.005 (lower)	201 ms
7	gitBeacon status Grade A, 100% up so far, $0.01 per call; no measured edge over StableNinja Daily digests and raw data on trending GitHub repositories for agents, paid per call over x402 on Base.	Up	A (90/100)	100% (14/14)	$0.01	267 ms
8	Vindex status Grade A, 100% up so far, $0.01 per call; no measured edge over StableNinja VIN decoding, recalls, reliability data and ownership costs for the US and Canada, paid per call over x402.	Up	A (90/100)	100% (14/14)	$0.01	293 ms
9	CRYPTYX status Grade A, 100% up so far, $0.01 per call; no measured edge over StableNinja Digital-asset analytics across many metrics and signals for traders and agents.	Up	A (90/100)	100% (14/14)	$0.01	311 ms
10	x402Pulse status Lower price per call ($0.0014 vs $0.01); also pays on Solana Pay-per-call data for agents: Polymarket trader rankings, FDA and hospital data, oil markets, SEC filings…	Up	A (90/100)	100% (14/14)	$0.0014 (lower)	338 ms
11	Signalis status Grade A, 100% up so far, $0.01 per call; no measured edge over StableNinja Intelligence digests built from 20 sources every four hours, plus AI-business narrative tracking, paid per…	Up	A (90/100)	100% (14/14)	$0.01	339 ms
12	newstex.com status Grade A, 100% up so far, $0.01 per call; no measured edge over StableNinja Licenses rights-cleared news content from 1,600+ publishers to information platforms and AI developers.	Up	A (90/100)	100% (14/14)	$0.01	491 ms
13	Isocast status Grade A, 100% up so far, $0.01 per call; no measured edge over StableNinja Weather signals for Polymarket temperature markets, sent when a city's daily high enters a new bucket; paid…	Up	A (90/100)	100% (14/14)	$0.01	511 ms
14	Storm Station 247 Faster median response (85 ms vs 273 ms) US weather site whose conditions, forecasts, radar and ranked weather-station readings are also an API, paid…	Up	A (90/100)	100% (8/8)	$0.01	85 ms
15	TCG API status Lower price per call ($0.005 vs $0.01); faster median response (95 ms vs 273 ms) Market prices for 50+ trading card games, including Pokemon, Magic and Yu-Gi-Oh!, with per-condition prices…	Up	B (85/100)	100% (14/14)	$0.005 (lower)	95 ms

1. FanfareUp
Lower price per call ($0.001 vs $0.01); higher x402 score (95 vs 90)
x402 grade
A (95/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.001 (lower)
Response
183 ms
Fanfare status
2. x402aiUp
Higher x402 score (95 vs 90)
x402 grade
A (95/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.01
Response
281 ms
x402ai status
3. SwarmioUp
Higher x402 score (95 vs 90)
x402 grade
A (95/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.01
Response
303 ms
Swarmio status
4. PayPerByteUp
Lower price per call ($0.005 vs $0.01); higher x402 score (95 vs 90)
x402 grade
A (95/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.005 (lower)
Response
451 ms
PayPerByte status
5. CoinslotUp
Lower price per call ($0.003 vs $0.01); higher x402 score (95 vs 90)
x402 grade
A (95/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.003 (lower)
Response
497 ms
Coinslot status
6. magentUp
Lower price per call ($0.005 vs $0.01); faster median response (201 ms vs 273 ms)
x402 grade
A (90/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.005 (lower)
Response
201 ms
magent status
7. gitBeaconUp
Grade A, 100% up so far, $0.01 per call; no measured edge over StableNinja
x402 grade
A (90/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.01
Response
267 ms
gitBeacon status
8. VindexUp
Grade A, 100% up so far, $0.01 per call; no measured edge over StableNinja
x402 grade
A (90/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.01
Response
293 ms
Vindex status
9. CRYPTYXUp
Grade A, 100% up so far, $0.01 per call; no measured edge over StableNinja
x402 grade
A (90/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.01
Response
311 ms
CRYPTYX status
10. x402PulseUp
Lower price per call ($0.0014 vs $0.01); also pays on Solana
x402 grade
A (90/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.0014 (lower)
Response
338 ms
x402Pulse status
11. SignalisUp
Grade A, 100% up so far, $0.01 per call; no measured edge over StableNinja
x402 grade
A (90/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.01
Response
339 ms
Signalis status
12. newstex.comUp
Grade A, 100% up so far, $0.01 per call; no measured edge over StableNinja
x402 grade
A (90/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.01
Response
491 ms
newstex.com status
13. IsocastUp
Grade A, 100% up so far, $0.01 per call; no measured edge over StableNinja
x402 grade
A (90/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.01
Response
511 ms
Isocast status
14. Storm Station 247Up
Faster median response (85 ms vs 273 ms)
x402 grade
A (90/100)
Uptime (checks so far)
100% (8/8)
Price in 402
$0.01
Response
85 ms
15. TCG APIUp
Lower price per call ($0.005 vs $0.01); faster median response (95 ms vs 273 ms)
x402 grade
B (85/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.005 (lower)
Response
95 ms
TCG API status

Prices are what each endpoint’s 402 asked for at our last check, for the one endpoint we check. Each API does its own job and other routes may be priced differently, so a lower price is not like-for-like. Check the provider before paying.

StableNinja alternatives FAQ

What are the best alternatives to StableNinja?

By our ranking (x402 grade, then uptime from our daily checks, then x402 score and response time): Fanfare, x402ai, Swarmio. Each does its own job, so check that its endpoints cover what you use StableNinja for.

Is there a cheaper alternative to StableNinja?

6 of the 15 alternatives asked for less per call than StableNinja's $0.01 in their 402 at our last check: Fanfare ($0.001), PayPerByte ($0.005), Coinslot ($0.003), magent ($0.005), x402Pulse ($0.0014) and others. Prices are for the endpoint we check; other routes and what you get per call differ, so check the provider before paying.

How are these alternatives ranked?

Same category, ranked by x402 grade, then uptime from our own daily unpaid checks, then x402 score, valid x402 share and median response time. Price is shown but never used for ranking, and paid placement never changes the order.

StableNinja review·StableNinja status·data APIs status·Best data APIs·Uptime leaderboard

Data as of Nov 10, 2026, 7:20 AM ET. One unpaid request per listing per day to its example endpoint; up means any answer below HTTP 500 except 404/410 within 8 seconds. The x402 grade comes from x402fix, our free unpaid check of each 402 payment request; it rates the payment request, not uptime, and is not an endorsement. Listings with no check yet, no price read from a 402, or a check we are fixing are left out.

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