RagSphere alternatives
12 MCP servers, A2A agents and x402 APIs that also do documents & pdfs, knowledge & memory, social media, ranked by how much they overlap with RagSphere (A2A agent), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| RagSphere (this one) | A2A agent | Yes | 2 | – |
| Vend API Merchant | A2A agent | Yes | 9 | 90/100 |
| Claix | A2A agent | Yes | 12 | – |
| colegal-public-assistant | A2A agent | Yes | 12 | – |
| clink-lithium-vault.fly.dev | x402 paid API | Yes | 12 | – |
| Agent Products | A2A agent | Yes | 12 | – |
| agents.daedalusdevelopmentgroup.com | x402 paid API | Yes | 12 | – |
| embed.gedx402.com | x402 paid API | Yes | 1 | – |
| Machine Library (Space Frontiers) | A2A agent | Yes | 3 | – |
| web.tollkit.dev | x402 paid API | Yes | 6 | – |
| Prowlo — Reddit & X for AI agents | MCP server | Yes | – | – |
| agent.halowerk.com | x402 paid API | Yes | 3 | 88/100 |
| Colour Memory | MCP server | Yes | 40 | 80/100 |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- Vend API Merchant Live A2A
Pay-per-call API merchant settled in Nano (XNO): web page extraction, link status checks, URL status checks, domain intelligence, web search, IP geolocation, Nano account info and YouTube transcript extraction. No signu…
A2A agent · Vend · 9 skills · check 90/100 · also does documents & pdfs, social media
- 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 documents & pdfs, knowledge & memory
- colegal-public-assistant Live A2A
Co-Legal Public Assistant — an AI assistant for informational Q&A about Belgian and Dutch private-client legal and fiscal topics (inheritance & gift tax, company law, VAT, succession planning, case-law & statute lookups…
A2A agent · Co-Legal B.V. · 12 skills · also does documents & pdfs, knowledge & memory
- clink-lithium-vault.fly.dev Live x402
X/Twitter search for AI agents - live tweets via advanced search: from:user, exact phrases, #hashtags, min_faves, lang, since/until dates. Returns up to 20 newest matches with author, followers, likes, retweets, views,…
x402 paid API · 12 endpoints · also does documents & pdfs, social media
- Agent Products Live A2A
Cloud infrastructure services for autonomous AI agents. 20 services: decision audit, persistent memory, fleet monitoring, content filtering, task handoff, wallet management, identity verification, distributed scheduling…
A2A agent · Pangeon Corp · 12 skills · also does documents & pdfs, knowledge & memory
- agents.daedalusdevelopmentgroup.com Live x402
DDG agent-payable service request (248 paid endpoints on agents.daedalusdevelopmentgroup.com.)
x402 paid API · 12 endpoints · also does documents & pdfs, knowledge & memory
- embed.gedx402.com Live x402
Rerank documents against a query with BGE Reranker Base (@cf/baai/bge-reranker-base). POST query plus documents[]; returns relevance scores for search and RAG pipelines.
x402 paid API · 1 endpoint · also does documents & pdfs, knowledge & memory
- Machine Library (Space Frontiers) Live A2A
Research and commerce agent for the Machine Library knowledge platform by Space Frontiers Company: answers research questions grounded in multi-billion scholarly and public-interest documents with citations, explains MC…
A2A agent · Space Frontiers · 3 skills · also does documents & pdfs, knowledge & memory
- web.tollkit.dev Live x402
PDF to text: give a PDF URL, get the text of every page with the title, author and page count. For RAG, research and summarizing reports, filings and papers. (6 paid endpoints on web.tollkit.dev.)
x402 paid API · 6 endpoints · also does documents & pdfs, knowledge & memory
- Prowlo — Reddit & X for AI agents Live MCP
Reddit & X data for AI agents over MCP. Semantic search, hosted, no Reddit API.
MCP server · com.prowlo · also does knowledge & memory, social media
- agent.halowerk.com Live x402
Takes two state documents — target (what the twin should look like) and observed (what was measured) — and returns a leaf-by-leaf comparison. Every leaf path carries one of five states: in_tolerance, out_of_tolerance, m…
x402 paid API · 3 endpoints · check 88/100 · also does documents & pdfs, knowledge & memory
- Colour Memory Live MCP
Colour meaning, history and evidence for AI: 45,000+ source-graded colour records and 91 tools.
MCP server · io.github.DigbyO · 40 tools · check 80/100 · also does documents & pdfs, knowledge & memory