Arca alternatives
12 MCP servers, A2A agents and x402 APIs that also do knowledge & memory, data extraction, ranked by how much they overlap with Arca (MCP server), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| Arca (this one) | MCP server | Yes | – | – |
| ARCASOS Short-Term Rental Search | A2A agent | Yes | 1 | – |
| Claix | A2A agent | Yes | 12 | – |
| PHION Agent Trust Infrastructure | A2A agent | Yes | 24 | 90/100 |
| madoromi.fun | x402 paid API | Yes | 1 | – |
| Apify | MCP server | Yes | 9 | 80/100 |
| AI Search Kit | MCP server | Yes | – | – |
| AkkruData | MCP server | Yes | – | – |
| AnomalyArmor | MCP server | Yes | – | – |
| Arkrel | MCP server | Yes | – | – |
| Big Balls Sports Data | MCP server | Yes | – | – |
| Contrie | MCP server | Yes | – | – |
| Derrick | MCP server | Yes | – | – |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- ARCASOS Short-Term Rental Search Live A2A
South Korea premium short-term rental discovery service. Natural language search powered by SHV (Semantic Hybrid Vector) retrieval — combining keyword matching, structured field scoring, and semantic embedding similarit…
A2A agent · ARCASOS · 1 skill · also does knowledge & memory, data extraction
- Claix Live A2A
Claix turns unstructured documents into typed JSON and queryable memory for AI agents. Extract PDF, Excel, Word, images, and text; ask persisted documents by document_id; reason across a knowledge space with space_id. O…
A2A agent · Claix · 12 skills · also does knowledge & memory, data extraction
- PHION Agent Trust Infrastructure Live A2A
One hundred twenty-three composable inference, search, intelligence, verified-data, enrichment, durable-task, security, trust, compatibility, reputation, commerce, RWA and indexing services for autonomous AI agents
A2A agent · PHION Systems · 24 skills · check 90/100 · also does knowledge & memory, data extraction
- madoromi.fun Live x402
Japanese dream-interpretation agent API. Returns a Gemini-generated full interpretation from madoromi's curated dream-motif knowledge base (result schema agent-dream-insight.full.v1). Japanese output only. Dream text is…
x402 paid API · 1 endpoint · also does knowledge & memory, data extraction
- Apify Live MCP
Extract data from any website with thousands of scrapers, crawlers, and automations on Apify Store ⚡
MCP server · Apify · 9 tools · check 80/100 · also does data extraction
- AI Search Kit Live MCP
Audits AI-crawler access, structured data and llms.txt on a site, and drafts the fixes.
MCP server · com.modernmustardseed · also does data extraction
- AkkruData Live MCP
SEC filings, financial statements, metrics, insider and institutional holdings as structured data
MCP server · ai.akkrudata · also does data extraction
- AnomalyArmor Live MCP
Data observability tools for engineering teams: alerts, freshness, schema drift, lineage, quality.
MCP server · ai.anomalyarmor · also does data extraction
- Arkrel Live MCP
Turn documents into verified, structured data: fields, tables, and automatic checks.
MCP server · com.arkrel · also does data extraction
- Big Balls Sports Data Live MCP
Sports data across 8 sports under one canonical schema — scores, stats, standings, Elo, odds
MCP server · com.bigballsdata · also does data extraction
- Contrie Live MCP
Extract structured data from a web page, read it as markdown, verify values against the source.
MCP server · com.contrie · also does data extraction
- Derrick Live MCP
B2B data enrichment: verified work emails, phones, firmographics, tech stack, hiring signals.
MCP server · com.derrick-app · also does data extraction