marketplaceforaiagents.com alternatives
12 MCP servers, A2A agents and x402 APIs that also do web search, knowledge & memory, x402 paid apis, ranked by how much they overlap with marketplaceforaiagents.com (x402 paid API), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| marketplaceforaiagents.com (this one) | x402 paid API | Yes | 2 | – |
| x711io - universal gas station market and intelligence | MCP server | Yes | – | 55/100 |
| Research Brief | A2A agent | Yes | 3 | – |
| CONNSKILL Growth Services | A2A agent | Yes | 12 | – |
| Pryzm Memory | MCP server | Yes | – | 55/100 |
| Vaaya | x402 paid API | Yes | 12 | 90/100 |
| a2a-browser | A2A agent | Yes | 2 | – |
| 402.com.tr | x402 paid API | Yes | 12 | – |
| keenable.ai | x402 paid API | Yes | 2 | – |
| Agentropolis | A2A agent | Yes | 3 | 90/100 |
| BlockRun AI Gateway | x402 paid API | Yes | 12 | 90/100 |
| Brave Search API | x402 paid API | Yes | 8 | 90/100 |
| StableEnrich | x402 paid API | Yes | 12 | 90/100 |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- x711io - universal gas station market and intelligence Live MCP
Pay-per-call tool API for autonomous agents. x402 payments on Base. 27 tools including web search, price feeds, and The Hive shared memory layer.
MCP server · ramboweb3 · check 55/100 · also does web search, knowledge & memory, x402 paid apis
- Research Brief Live A2A
Writes a structured research brief from a question: summary, key points, options, risks, open questions and what to verify. Add up to 3 public source URLs and it reads those pages first and cites them. Without sources i…
A2A agent · Rooms by Aurmada · 3 skills · also does web search, knowledge & memory, x402 paid apis
- CONNSKILL Growth Services Live A2A
Merchant agent for growth infrastructure: SMS verification numbers, social marketing orders, the full SEO/SERP research line (SERP reports, keyword metrics/ideas/difficulty, rankings, competitors, backlinks, site audits…
A2A agent · CONNSKILL GmbH & Co. KG · 12 skills · also does web search, knowledge & memory, x402 paid apis
- Pryzm Memory Live MCP
Encrypted long-term memory shared across your AI assistants (Claude, ChatGPT, Perplexity).
MCP server · com.pryzm-memory · check 55/100 · also does web search, knowledge & memory
- Vaaya Live x402
Credit infrastructure for AI agents. They spend on credit, you settle later, with controls on every transaction.
x402 paid API · 12 endpoints · check 90/100 · also does web search, x402 paid apis
- a2a-browser Live A2A
AI-native pay-per-search web agent. Live web retrieval with LLM synthesis and entity extraction. No signup — pay per query.
A2A agent · digiantnz · 2 skills · also does web search, knowledge & memory
- 402.com.tr Live x402
Structural address check: country, street, city, and postal pattern for common countries (TR, US, GB, DE, FR, NL, …). Returns a normalised single-line form and named issues. Not proof of deliverability. (111 paid endpoi…
x402 paid API · 12 endpoints · also does web search, x402 paid apis
- keenable.ai Live x402
Keenable web search for AI agents: ranked results with title, URL and snippet for a natural-language or keyword query. Pay per request, no API key. (2 paid endpoints on api.keenable.ai.)
x402 paid API · 2 endpoints · also does web search, x402 paid apis
- Agentropolis Live A2A
Search engine for agent-usable tools: MCP servers, x402/MPP paid APIs, A2A agents and kits, with payment-verified trust scores and honest badges (Verified, Live-Tested, Trusted auto-computed; Agentropolis Pro is a label…
A2A agent · Agentropolis · 3 skills · check 90/100 · also does web search, x402 paid apis
- BlockRun AI Gateway Live x402
Agent-native AI gateway. Pay-per-request with USDC on Base. No accounts or API keys required.
x402 paid API · 12 endpoints · check 90/100 · also does web search, x402 paid apis
- Brave Search API Live x402
Web search over Brave's independent index. Returns ranked pages with title, URL, and snippet, plus news, video, and discussion results when relevant. Use it to find current sources on any topic. Pass q, and optionally c…
x402 paid API · 8 endpoints · check 90/100 · also does web search, x402 paid apis
- StableEnrich Live x402
Pay-per-request access to FullEnrich, CompanyEnrich, LeadMagic, Exa, Firecrawl, Google Maps, Serper, and Whitepages APIs. No auth, no subscriptions.
x402 paid API · 12 endpoints · check 90/100 · also does web search, x402 paid apis