AI Deals Sentinel: Free AI API Tiers alternatives
12 MCP servers, A2A agents and x402 APIs that also do knowledge & memory, ai models & inference, ranked by how much they overlap with AI Deals Sentinel: Free AI API Tiers (MCP server), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| AI Deals Sentinel: Free AI API Tiers (this one) | MCP server | Yes | – | – |
| paper-search-mcp-openai-v2 | MCP server | Yes | – | – |
| Great Arrow | MCP server | Yes | 40 | 80/100 |
| MemoryRouter | MCP server | Yes | 10 | 80/100 |
| Web Page Reader | A2A agent | Yes | 3 | – |
| Research Brief | A2A agent | Yes | 3 | – |
| ASR Memory (에사 AI) — Shared memory for AI tools | MCP server | Yes | – | 55/100 |
| Cornelius | MCP server | Yes | – | 55/100 |
| Echo Memory | MCP server | Yes | – | 55/100 |
| Era Context | MCP server | Yes | – | 55/100 |
| Heirmos | MCP server | Yes | – | 55/100 |
| Pryzm Memory | MCP server | Yes | – | 55/100 |
| a2a-browser | A2A agent | Yes | 2 | – |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- paper-search-mcp-openai-v2 Live MCP
Find and download academic papers from leading sources like arXiv, PubMed, bioRxiv, medRxiv, Google Scholar, Semantic Scholar, CrossRef, and IACR. Get standardized results and fetch full-text PDFs when available. Accele…
MCP server · TitanSneaker · also does knowledge & memory, ai models & inference
- Great Arrow Live MCP
Shared memory and actions for Claude, Kiro, OpenAI, Cursor, and other MCP-compatible AI clients.
MCP server · ai.greatarrow · 40 tools · check 80/100 · also does knowledge & memory, ai models & inference
- MemoryRouter Live MCP
Persistent AI memory shared across Claude, ChatGPT, coding agents, and compatible MCP clients.
MCP server · ai.memoryrouter · 10 tools · check 80/100 · also does knowledge & memory, ai models & inference
- Web Page Reader Live A2A
Give it a public http(s) URL. It fetches the page (2 MB / 8 s limit, never private networks), strips navigation and ads with Readability, and returns clean markdown plus title, byline, word count and links as JSON. Ask…
A2A agent · Rooms by Aurmada · 3 skills · also does knowledge & memory, ai models & inference
- 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 knowledge & memory, ai models & inference
- ASR Memory (에사 AI) — Shared memory for AI tools Live MCP
Shared memory for AI tools: save once, recall word for word from Claude, ChatGPT, Codex or Gemini.
MCP server · com.asrmemory · check 55/100 · also does knowledge & memory, ai models & inference
- Cornelius Live MCP
A personal agent with lasting memory and a morning brief, inside the Claude or ChatGPT you use.
MCP server · bot.cornelius · check 55/100 · also does knowledge & memory, ai models & inference
- Echo Memory Live MCP
Shared memory for AI agents, as a graph in your own Postgres. Writes never call an LLM.
MCP server · io.github.ayushcodes10 · check 55/100 · also does knowledge & memory, ai models & inference
- Era Context Live MCP
Personal finance, bank account, and shared memory connector for Claude, ChatGPT, Gemini Spark & more
MCP server · app.era · check 55/100 · also does knowledge & memory, ai models & inference
- Heirmos Live MCP
Persistent memory shared across Claude, ChatGPT, Grok and other MCP clients.
MCP server · com.heirmos · check 55/100 · also does knowledge & memory, ai models & inference
- 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 knowledge & memory, ai models & inference
- 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 knowledge & memory, ai models & inference