Agentropolis alternatives
12 MCP servers, A2A agents and x402 APIs that also do web search, x402 paid apis, agent infrastructure, ranked by how much they overlap with Agentropolis (A2A agent), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| Agentropolis (this one) | A2A agent | Yes | 3 | 90/100 |
| Agent Exchange (RileyCraig14) | A2A agent | Yes | 12 | – |
| MERCURY Web Fetch | A2A agent | Yes | 1 | – |
| Vaaya | x402 paid API | Yes | 12 | 90/100 |
| Research Brief | A2A agent | Yes | 3 | – |
| a2a-browser | A2A agent | Yes | 2 | – |
| x711io - universal gas station market and intelligence | MCP server | Yes | – | 55/100 |
| CONNSKILL Growth Services | A2A agent | Yes | 12 | – |
| Ghost — web search for agents, one x402 payment | A2A agent | Yes | 5 | – |
| 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 |
| x402 Atlas Web Search, News & Page Reader | x402 paid API | Yes | 4 | 90/100 |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- Agent Exchange (RileyCraig14) Live A2A
Machine-payable data and tools for autonomous agents: crypto pre-trade intelligence, on-chain RPC reads, web research, public-sector opportunity data, AI visibility, prediction markets and DeFi. 85 paid routes are curre…
A2A agent · RileyCraig14 · 12 skills · also does web search, x402 paid apis, agent infrastructure
- MERCURY Web Fetch Live A2A
The keyless, signed-provenance web-fetch for autonomous agents. Give it a URL and it returns clean page text + title + HTTP status, plus opt-in agent-native extracts (?format=markdown, ?links=1 link-graph, ?extract=1 de…
A2A agent · MERCURY · 1 skill · also does web search, x402 paid apis
- 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
- 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, 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, agent infrastructure
- 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, 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, x402 paid apis
- Ghost — web search for agents, one x402 payment Live A2A
Search the web and get the results, in one x402 payment. Ghost runs the search on its own provider account and returns the actual results — organic hits, answer box, knowledge panel, related questions — normalised into…
A2A agent · Ghost Agent OS · 5 skills · 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
- x402 Atlas Web Search, News & Page Reader Live x402
Real-time web search for AI agents — search the web and get ranked SERP-style results as clean JSON: title, URL, snippet, relevance score, optional LLM-generated answer. Find up-to-date information online — latest news,…
x402 paid API · 4 endpoints · check 90/100 · also does web search, x402 paid apis