Cheapest x402 Data Enrichment APIs

34 x402 Data Enrichment APIs catalogued, ranked by price per call (cheapest first). Updated June 23, 2026.

#	API	Volume 30d↕	Payments 30d↕	Price / call↕	Endpoints↕	Latency↕	Trust↕
1	clawmail.xyz clawmail.xyz Base	—	—	$1	1	303 ms	—
2	Stable-enrich-git-shafu-stableenrich-b2b-a-2fcea0-merit-systems stable-enrich-git-shafu-stableenrich-b2b-a-2fcea0-merit-systems.vercel.app Base	$1.6k* ▼ 34.8%	49,451+ ▼ 53.5%	$0.2	1	600 ms	81
3	Stable-enrich-git-shafu-pdl-not-found-200-merit-systems stable-enrich-git-shafu-pdl-not-found-200-merit-systems.vercel.app Base	$1.6k* ▼ 34.8%	49,451+ ▼ 53.5%	$0.2	1	557 ms	83
4	Stable-enrich-git-shafu-replace-apollo-b2b-37a426-merit-systems stable-enrich-git-shafu-replace-apollo-b2b-37a426-merit-systems.vercel.app Base	$1.6k* ▼ 34.8%	49,451+ ▼ 53.5%	$0.2	2	869 ms	82
5	Stable-enrich-git-shafu-pdl-people-enrich-4ce5a8-merit-systems stable-enrich-git-shafu-pdl-people-enrich-4ce5a8-merit-systems.vercel.app Base	$1.6k* ▼ 34.8%	49,451+ ▼ 53.5%	$0.2	1	644 ms	82
6	fastsend.dev fastsend.dev Base	—	—	$0.165	1	376 ms	—
7	api.locus.report api.locus.report Base	$26.55* ▼ 95.2%	26 ▲ 37.5%	$0.15 – $3	5	555 ms	72
8	Avisradar-production avisradar-production.up.railway.app Base	$10.15*	33 ▼ 80.0%	$0.05 – $1	5	119 ms	67
9	Probe probe.onchainintel.net Base	$17.63 ▲ 2.0%	533 ▲ 0.0%	$0.025 – $1	8	54 ms	73
10	X402-cybercentry-private-data-verification x402-cybercentry-private-data-verification.up.railway.app Base	$9.06* ▲ 999.0%	131 ▼ 57.1%	$0.02	3	344 ms	80
11	Attestify-os attestify-os.vercel.app Base	$1.54* ▲ 32.8%	79 ▼ 100.0%	$0.018 – $0.025	2	382 ms	76
12	Linked Panda api.linkedpanda.com Base	$54.16* ▲ 999.0%	353 ▲ 51.8%	$0.01 – $0.3	25	104 ms	76
13	Paysponge api.paysponge.com Base	$14.83* ▲ 32.3%	769 ▼ 72.2%	$0.01 – $2	56	529 ms	72
14	Company Enrichment API company-enrichment-api-production.up.railway.app Base	—	—	$0.01	1	193 ms	—
15	Basesafe-x402 basesafe-x402.baseagentx402.workers.dev Base	$0.13	13 ▼ 100.0%	$0.01	2	466 ms	68
16	411data 411data.io Base	$11.00*	5 ▼ 100.0%	$0.01 – $1.5	12	92 ms	63
17	company-enrichment.api.klymax402.com company-enrichment.api.klymax402.com Base	$0.71* ▼ 12.3%	276 ▲ 69.4%	$0.01	1	116 ms	84
18	WorkAgnt workagnt.ai Base	$0.06* ▲ 0.0%	3 ▼ 100.0%	$0.01 – $0.02	8	96 ms	61
19	tech-enrichment.api.klymax402.com tech-enrichment.api.klymax402.com Base	$0.71* ▼ 12.3%	276 ▲ 69.4%	$0.005	1	128 ms	84
20	verify.camelai.io verify.camelai.io Base	—	—	$0.005	1	286 ms	—
21	AI Readiness Checker ai-readiness.mingles.ai Base	—	—	$0.005 – $0.01	2	105 ms	—
22	sentinel-awms.onrender.com sentinel-awms.onrender.com Base	—	—	$0.005	1	250 ms	—
23	inbox.camelai.io inbox.camelai.io Base	—	—	$0.005	1	291 ms	—
24	Coinopai x402.coinopai.com Base	$12.47* ▲ 30.0%	271 ▼ 15.2%	$0.005 – $0.25	15	312 ms	75
25	Blocknotify x402.blocknotify.com Base	$0.01* ▲ 0.0%	2 ▼ 100.0%	$0.0011 – $0.05	6	113 ms	59
26	The-stall the-stall.intuitek.ai Base	$27.17	994 ▼ 8.0%	$0.00105 – $0.65	202	354 ms	67
27	Hello-world-x402 hello-world-x402.vercel.app Base	$0.02 ▼ 50.0%	20 ▼ 50.0%	$0.001	3	146 ms	71
28	Web3-signals-api-production web3-signals-api-production.up.railway.app Base	$0.01* ▲ 0.0%	8	$0.001	2	66 ms	66
29	validate.agentutil.net validate.agentutil.net Base	—	—	$0.001	1	158 ms	—
30	Dns dns.x402tools.xyz Base	$0.77	300 ▼ 100.0%	$0.001 – $0.005	10	382 ms	85
31	Verify verify.agentutil.net Base	$0.06* ▲ 200.0%	39	$0.001 – $0.004	7	85 ms	74
32	tools.ipintel.ai tools.ipintel.ai Base	$0.07*	70 ▲ 100.0%	$0.001	4	447 ms	77
33	Notify notify.melis.ai Base	$0.16 ▼ 30.4%	32 ▲ 200.0%	$0.00005 – $0.005	26	91 ms	73
34	AgentMail x402.api.agentmail.to Base	$120.61* ▲ 225.4%	1,108 ▼ 96.3%	$10	164	556 ms	46

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