Unpaywall is answering right now. Last checked 6 min ago. It exposes 33 tools. Last commit 2 Jun 2026.
Unpaywall MCP — open-access lookup for scholarly papers (free, no key)
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 6 min ago.
claude mcp add unpaywall --transport http https://gateway.pipeworx.io/unpaywall/mcp
{
"mcpServers": {
"unpaywall": {
"url": "https://gateway.pipeworx.io/unpaywall/mcp"
}
}
}
[mcp_servers.unpaywall]
url = "https://gateway.pipeworx.io/unpaywall/mcp"
{
"mcpServers": {
"unpaywall": {
"url": "https://gateway.pipeworx.io/unpaywall/mcp"
}
}
}
{
"mcpServers": {
"unpaywall": {
"url": "https://gateway.pipeworx.io/unpaywall/mcp"
}
}
}
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
polymarket_arbitrage
polymarket_edge_tracker
polymarket_edges
polymarket_fill_risk
polymarket_kalshi_spread
ask_pipeworx
ask_pipeworx_beta
ask_pipeworx_grounded
pipeworx_feedback
pipeworx_trending
recent_alerts
recent_changes
scan_competitor_ai_presence
scan_dependency
bet_research
compare_entities
deep_research
discover_tools
entity_profile
forget
generate_llms_txt
get_oa
search_papers
recall
remember
resolve_entity
subscribe
list_subscriptions
suggest_questions
unsubscribe
validate_claim
ai_visibility_check
search_within
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://gateway.pipeworx.io/unpaywall/mcp | streamable-http | answering | 45 ms | 6 min ago |
Answers built from our own checks of this server.