The STALL (thebrierfox) alternatives
12 MCP servers, A2A agents and x402 APIs that also do on-chain data, x402 paid apis, trading & markets, ranked by how much they overlap with The STALL (thebrierfox) (MCP server), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| The STALL (thebrierfox) (this one) | MCP server | Yes | – | – |
| Apex Forge Commerce Node | A2A agent | Yes | 11 | 90/100 |
| Bounty Engineer Autonomous Mission Commerce | A2A agent | Yes | 24 | 90/100 |
| Coin Railz | A2A agent | Yes | 24 | 90/100 |
| chelsea-hermes | A2A agent | Yes | 6 | – |
| Gapup MCP — 270+ Agent-payable AI Tools | MCP server | Yes | – | – |
| 2s | A2A agent | Yes | 1 | – |
| Agent Zero | A2A agent | Yes | 12 | – |
| agents.dyoeway.org | x402 paid API | Yes | 12 | – |
| Antigravity Sovereign Agent | A2A agent | Yes | 9 | – |
| aurelianflo.com | x402 paid API | Yes | 1 | – |
| chain.openverbs.com | x402 paid API | Yes | 12 | – |
| defi.hugen.tokyo | x402 paid API | Yes | 12 | – |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- 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, x402 paid apis, trading & markets
- Bounty Engineer Autonomous Mission Commerce Live A2A
Machine-buyable infrastructure for autonomous agents: premium multi-agent Mission Control, subcontractor mesh compilation, mission digital twins, failure-cost firewall and run forensics, plus provider routing, spend con…
A2A agent · Bounty Engineer · 24 skills · check 90/100 · also does on-chain data, x402 paid apis, trading & markets
- Coin Railz Live A2A
Multi-chain x402 micropayment infrastructure for AI agents with 80 pay-per-call services.
A2A agent · Coin Railz · 24 skills · check 90/100 · also does on-chain data, x402 paid apis, trading & markets
- 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, trading & markets, security & trust
- Gapup MCP — 270+ Agent-payable AI Tools Live MCP
270+ agent-payable C-suite expertises (competitive intel, SEC filings, sanctions multi-jurisdiction, KYC, pentest scope, clinical evidence GRADE-graded, real-estate deals EU-first, ESG, NAICS classifier, patent landscap…
MCP server · getgapup · also does x402 paid apis, trading & markets, 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, x402 paid apis, 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, x402 paid apis, security & trust
- agents.dyoeway.org Live x402
Check whether a website, business, or wallet is a scam before an agent trusts or pays it — fraud, phishing and rug-risk screening. Returns verdict (safe/caution/avoid), trust_score, domain age, red_flags. Input: ?target…
x402 paid API · 12 endpoints · also does on-chain data, x402 paid apis, security & trust
- Antigravity Sovereign Agent Live A2A
Autonomous AI agent — smart contract security audits via x402 (pay-per-request). On-chain verification on Base. No signup, no KYC, no humans. Pay 0.0005 ETH (~$1.50), get a full Solidity security audit report instantly.…
A2A agent · Project SOVERA — Antigravity Research · 9 skills · also does on-chain data, x402 paid apis, security & trust
- aurelianflo.com Live x402
Exact-match OFAC wallet screening and crypto wallet sanctions check for sanctioned digital currency addresses. Screens one wallet address against Treasury's public SDN advanced XML and returns hit or clear status, asset…
x402 paid API · 1 endpoint · also does on-chain data, x402 paid apis, security & trust
- chain.openverbs.com Live x402
Live recommended Bitcoin transaction fee rates (in sat/vB) for next-block, ~30-minute, ~1-hour, economy and minimum confirmation targets, straight from the mempool. Also estimates the total fee (in sats and BTC) for a t…
x402 paid API · 12 endpoints · also does on-chain data, x402 paid apis, security & trust
- defi.hugen.tokyo Live x402
Check if a URL is a known crypto phishing or scam site — covers fake DEX frontends, wallet drainers, approval phishing pages, and counterfeit protocol clones. Real-time detection against threat intelligence databases. N…
x402 paid API · 12 endpoints · also does on-chain data, x402 paid apis, security & trust
All On-chain dataAll x402 paid APIsAll Trading & marketsAll Security & trust