"A multifunctional research MCP server for a deep researcher subagent" matching MCP connectors:

Win probabilities for 13 sports: NFL, NBA, soccer, tennis, golf, cricket. No API key, no signup.

Polymarket, Manifold, Metaculus compared: one fair probability per question. No API key needed.

500+ pay-per-call tools + skill packs. USDC + USDG on 12 chains, or free via proof-of-work.

DXF and PDF/X-4 for AI agents: structured facts, PNG renders, an interactive in-chat viewer.

Neutral freight reference + validation layer for AI agents: ADR, HS, UN/LOCODE, freight math

Measured share of answer for 24 crypto and Web3 brands. An open dataset, not an audit of your site.

Measured share of answer for 20 SaaS brands. An open dataset, not an audit of your site.

Read-only MCP server for the OrchestKit docs: full-text search + Markdown fetch. No auth.

Enumerate and inspect PubFi capabilities, then execute an exact selected route.

Analytical memory for AI agents: a real Postgres queried in plain English over MCP. One command.

Read-only MVR preflight for trust, permission, evidence gaps, and African market-entry readiness.

Neutral, verification-gated MCP directory of Japan construction contractors (KIRA-audited).

Reference data for prediction markets: graded resolution clarity, cross-venue links, provenance.

Media intelligence analysis for audio, video, and images via the Echosaw MCP server.

Australian AI governance framework mapped to the Privacy Act and sector laws your AI use triggers.

Independent pre-transaction audit for construction estimates. Free, and every verdict recomputes.

Verify claims, resolve FIGI identity, extract claims, and sign x402 delivery receipts over MCP.

Host-owned vacation-rental direct booking via VRP. Signed offers, 0% commission. Not an OTA.

Entity resolution — data mapping, SDK code generation, docs search, and error troubleshooting

Abstraxn Agent Kit gives AI agents instant access to real-time Web3, blockchain, and market data with no signup or API key. Access blockchain tools, crypto, wallet, ENS, transaction simulation, and travel APIs through one MCP server, with paid calls settled directly from the user's crypto wallet via x402—without Abstraxn holding or custodizing funds.