Virtuals Protocol ACP alternatives

15 x402 marketplaces & API directories compared with Virtuals Protocol ACP: the price per call read from each 402, x402 grade, uptime and median response time from our own daily unpaid checks.

Virtuals Protocol ACP for reference

Agent Commerce Protocol for agent-to-agent commerce on Virtuals: agent registry, job specs, ERC-8183 trustless escrow, x402 support and evaluation.

Not measured yet

Virtuals Protocol ACP review

Top ranked

Xynaptic.io

Grade A (100/100), up

Lowest price per call in its 402

Macaroon Network

$0.001

Fastest median response

Xynaptic.io

207 ms

15 Virtuals Protocol ACP 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 Virtuals Protocol ACP’s 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	Xynaptic.io status Higher x402 grade (A); also pays on Polygon and Solana More than 200 pay-per-call data APIs for agents (official registries, market data, energy, flights, dev…	Up	A (100/100)	100% (14/14)	$0.01	207 ms
2	Station f(x)status Higher x402 grade (A); also pays on Solana Function marketplace for agents (economic data, product intelligence, coordination tools), paid per call on…	Up	A (95/100)	100% (14/14)	$0.005	263 ms
3	Agent402 status Higher x402 grade (A); also pays on Solana and Polygon Catalog of 500+ pay-per-call tools, models and reports for agents over x402 or MPP, or by card.	Up	A (95/100)	100% (14/14)	$0.005	268 ms
4	Mekler AI status Higher x402 grade (A); also pays on Solana Practical services an AI assistant can call, such as checking a CSV file, finding research or receiving email.	Up	A (95/100)	100% (14/14)	$0.003	380 ms
5	Teardrop status Higher x402 grade (A) Tool marketplace where agents pick tools by observed reputation and pay per call in USDC on Base over MCP or…	Up	A (95/100)	100% (14/14)	$0.01	437 ms
6	Grokzilla status Higher x402 grade (A) About 32 pay-per-call JSON APIs for agents, paid in USDC on Base over x402 v2 with no account.	Up	A (90/100)	100% (14/14)	$0.01	253 ms
7	MicroTap status Higher x402 grade (A); also pays on Solana and Polygon About 20 x402 APIs for agents (crypto and DeFi data, prediction markets, weather, web search), paid per call…	Up	A (90/100)	100% (14/14)	$0.01	319 ms
8	Ausca status Higher x402 grade (A) Metered APIs and MCP services agents can buy without accounts, with fixed prices and verifiable receipts.	Up	A (90/100)	100% (14/14)	$0.05	344 ms
9	Toll402 status Higher x402 grade (A) Gateway that puts thousands of agent tools behind one endpoint (web reading, enrichment, SEO, market data…	Up	A (90/100)	100% (11/11)	$0.002	376 ms
10	2s status Higher x402 grade (B); also pays on Solana Large catalog of 575+ pay-per-call endpoints for agents: data, an AI gateway, storage, queues and watchers.	Up	B (85/100)	100% (14/14)	$0.009	296 ms
11	CoinopAI status Higher x402 grade (B) Pay-per-call AI services on Base, including Kronos crypto data, image generation and a travel agent.	Up	B (85/100)	100% (14/14)	$0.005	341 ms
12	Macaroon Network status Higher x402 grade (B) Marketplace where agents find and buy live data and scientific tools over x402 in USDC on Base.	Up	B (85/100)	100% (14/14)	$0.001	362 ms
13	x402scan status Higher x402 grade (C) Explorer for the x402 ecosystem showing transactions, sellers and paid resources.	Up	C (75/100)	100% (14/14)	$0.01	238 ms
14	AgentPay Directory Higher x402 grade (F); also pays on Solana A directory where AI agents and the people behind them list machine-payable endpoints and real-world…	Up	F (45/100)	100% (14/14)	$0.001	413 ms
15	agentsvc.io status Higher x402 grade (A); also pays on Solana and Polygon About 127 per-call web services for agents, including crawling to Markdown, extraction, screenshots, PDF and…	Up	A (100/100)	100% (14/14)	$0.0065	582 ms

1. Xynaptic.ioUp
Higher x402 grade (A); also pays on Polygon and Solana
x402 grade
A (100/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.01
Response
207 ms
Xynaptic.io status
2. Station f(x)Up
Higher x402 grade (A); also pays on Solana
x402 grade
A (95/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.005
Response
263 ms
Station f(x) status
3. Agent402Up
Higher x402 grade (A); also pays on Solana and Polygon
x402 grade
A (95/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.005
Response
268 ms
Agent402 status
4. Mekler AIUp
Higher x402 grade (A); also pays on Solana
x402 grade
A (95/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.003
Response
380 ms
Mekler AI status
5. TeardropUp
Higher x402 grade (A)
x402 grade
A (95/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.01
Response
437 ms
Teardrop status
6. GrokzillaUp
Higher x402 grade (A)
x402 grade
A (90/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.01
Response
253 ms
Grokzilla status
7. MicroTapUp
Higher x402 grade (A); also pays on Solana and Polygon
x402 grade
A (90/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.01
Response
319 ms
MicroTap status
8. AuscaUp
Higher x402 grade (A)
x402 grade
A (90/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.05
Response
344 ms
Ausca status
9. Toll402Up
Higher x402 grade (A)
x402 grade
A (90/100)
Uptime (checks so far)
100% (11/11)
Price in 402
$0.002
Response
376 ms
Toll402 status
10. 2sUp
Higher x402 grade (B); also pays on Solana
x402 grade
B (85/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.009
Response
296 ms
2s status
11. CoinopAIUp
Higher x402 grade (B)
x402 grade
B (85/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.005
Response
341 ms
CoinopAI status
12. Macaroon NetworkUp
Higher x402 grade (B)
x402 grade
B (85/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.001
Response
362 ms
Macaroon Network status
13. x402scanUp
Higher x402 grade (C)
x402 grade
C (75/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.01
Response
238 ms
x402scan status
14. AgentPay DirectoryUp
Higher x402 grade (F); also pays on Solana
x402 grade
F (45/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.001
Response
413 ms
15. agentsvc.ioUp
Higher x402 grade (A); also pays on Solana and Polygon
x402 grade
A (100/100)
Uptime (checks so far)
100% (14/14)
Price in 402
$0.0065
Response
582 ms
agentsvc.io 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.

Virtuals Protocol ACP alternatives FAQ

What are the best alternatives to Virtuals Protocol ACP?

By our ranking (x402 grade, then uptime from our daily checks, then x402 score and response time): Xynaptic.io, Station f(x), Agent402. Each does its own job, so check that its endpoints cover what you use Virtuals Protocol ACP for.

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.

Virtuals Protocol ACP review·marketplaces & API directories status·Best marketplaces & API directories·Uptime leaderboard

Data as of Nov 10, 2026, 7:21 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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