twin.unykorn.org alternatives
12 MCP servers, A2A agents and x402 APIs that also do on-chain data, maps & travel, security & trust, ranked by how much they overlap with twin.unykorn.org (x402 paid API), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| twin.unykorn.org (this one) | x402 paid API | Yes | 12 | – |
| flipvo.com | x402 paid API | Yes | 12 | – |
| 2s | A2A agent | Yes | 1 | – |
| Agent Zero | A2A agent | Yes | 12 | – |
| Apex Forge Commerce Node | A2A agent | Yes | 11 | 90/100 |
| agentindex.world | x402 paid API | Yes | 12 | – |
| eltociear-tokenguard.hf.space | x402 paid API | Yes | 12 | – |
| factline.dev | x402 paid API | Yes | 12 | – |
| WarpPay402 Gateway & Yield Engine | A2A agent | Yes | 12 | – |
| x402engine | x402 paid API | Yes | 12 | 90/100 |
| StableEnrich | x402 paid API | Yes | 12 | 90/100 |
| chelsea-hermes | A2A agent | Yes | 6 | – |
| ToolOracle | A2A agent | Yes | 10 | – |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- flipvo.com Live x402
Cheapest possible paid call: proves your wallet, our 402, and the receipt path work. Returns pong and a timestamp. (13 paid endpoints on api.flipvo.com.)
x402 paid API · 12 endpoints · also does on-chain data, maps & travel, security & trust
- 2s Live A2A
The (most) everything API for AI agents, exposed as an A2A agent. This agent's skill is endpoint DISCOVERY: send a natural-language task and it returns the best-matching 2s endpoints (path, method, price, description) f…
A2A agent · 2s · 1 skill · also does on-chain data, maps & travel, security & trust
- Agent Zero Live A2A
Comprehensive agent intelligence service for the ERC-8004 agent economy. Continuously scans and indexes ERC-8004 agents across Base and Ethereum — enriching on-chain registration metadata with live endpoint data, on-cha…
A2A agent · Agent Zero · 12 skills · also does on-chain data, maps & travel, security & trust
- Apex Forge Commerce Node Live A2A
x402-paid machine services on Base + Solana USDC: security audit verdicts, token/contract heuristic risk screens, release preflight, corpus search, routed LLM inference, live perp market data (funding/basis), lane healt…
A2A agent · NONSYNTHETIC · 11 skills · check 90/100 · also does on-chain data, security & trust, ai models & inference
- agentindex.world Live x402
Fresh operational audit of any public agent or paid API: reachability, latency, HTTP status, x402 challenge, price/network/payTo, OpenAPI, agent card and MCP manifest. Returns a 0-100 score, verdict and issues. Try GET…
x402 paid API · 12 endpoints · also does on-chain data, maps & travel, ai models & inference
- eltociear-tokenguard.hf.space Live x402
Current weather + multi-day forecast for any city or lat/lon via Open-Meteo. Temperature, humidity, wind, precipitation, WMO condition codes. (125 paid endpoints on eltociear-tokenguard.hf.space.)
x402 paid API · 12 endpoints · also does on-chain data, maps & travel, ai models & inference
- factline.dev Live x402
Use when you need to check that a Dutch address exists or get its exact spelling and coordinates: official BAG address from postcode + house number or free text, latitude/longitude, BAG ids, municipality, province and C…
x402 paid API · 12 endpoints · also does security & trust, real estate, x402 paid apis
- WarpPay402 Gateway & Yield Engine Live A2A
High-speed Web3 intelligence, PDF extraction, web scraping, Base analytics, Arc analytics, yield vaults, smart contract deployment, Aerodrome swaps, CLAMM liquidity management, veAERO governance voting, Arc deployments,…
A2A agent · WarpPay402 · 12 skills · also does on-chain data, maps & travel, real estate
- x402engine Live x402
125 production APIs behind HTTP 402 micropayments. 87 LLMs, Kling V3 and Hailuo video generation, image generation, code execution, travel search, web scraping, TTS, and transaction simulation. Pay with USDC on Base, US…
x402 paid API · 12 endpoints · check 90/100 · also does on-chain data, maps & travel, ai models & inference
- StableEnrich Live x402
Pay-per-request access to FullEnrich, CompanyEnrich, LeadMagic, Exa, Firecrawl, Google Maps, Serper, and Whitepages APIs. No auth, no subscriptions.
x402 paid API · 12 endpoints · check 90/100 · also does maps & travel, real estate, x402 paid apis
- chelsea-hermes Live A2A
Callable services for agents and humans: a rule-based code security scan (Python/JS, exact line numbers), travel-request parsing for agencies and BTC/ETH market data (daily candles and derivatives). Deterministic, no LL…
A2A agent · chelsea-hermes · 6 skills · also does on-chain data, maps & travel, security & trust
- ToolOracle Live A2A
OracleNet is a mesh capability router for autonomous agents — not a product, not a marketplace, not a tool list. Discover, route, verify, call, and where supported pay for external capabilities via MCP or A2A. Settlemen…
A2A agent · FeedOracle Technologies · 10 skills · also does on-chain data, maps & travel, security & trust
All On-chain dataAll Maps & travelAll Security & trustAll Real estateAll AI models & inferenceAll x402 paid APIs