StableEnrich
stableenrich.dev
Pay-per-request access to FullEnrich, CompanyEnrich, LeadMagic, Exa, Firecrawl, Google Maps, Serper, and Whitepages APIs. No auth, no subscriptions.
bytemine.ai
B2B contact and company data APIs for GTM teams and AI agents (enrichment, search, company intel), available over REST, MCP and CLI, with agent routes payable per call over x402.
https://agents.bytemine.ai/functions/v1/api-gateway/b2b-searchUnpaid POST /functions/v1/api-gateway/b2b-search returned HTTP 402 on 2026-10-21 with x402 payment terms: x402 v2, upto scheme, up to 200000 (0.20 USDC) on Base; actual charge depends on usage. Listed on x402scan. Homepage fetched (HTTP 200). Last checked 2026-10-21.
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stableenrich.dev
Pay-per-request access to FullEnrich, CompanyEnrich, LeadMagic, Exa, Firecrawl, Google Maps, Serper, and Whitepages APIs. No auth, no subscriptions.
openverbs.com
OpenVerbs is a catalog of small, single-purpose HTTP tools for AI agents. Each does one job on its own subdomain and is paid per successful call in USDC on Base. No accounts, no API keys. Pay as you go.
demandex.dev
Community-mined e-commerce demand intelligence for AI agents — scored, evidence-backed opportunity cards mined from Reddit. Pay per call in USDC via x402 on Base. No signup, no API keys.