Best Alternatives to Agent Trust Mcp

Kraken crypto signals via x402: free preview + paid USDC-on-Base signals, regime & indicators

Trust & reliability scores for x402 endpoints: free ecosystem stats, paid per-endpoint scores.

Bi-temporal memory-as-a-service and paid agent labor. Pay-per-call USDC via x402; signed receipts.

Free agent discovery + paid x402 research (outline 0.01 / brief 0.02 USDC Base).

Plugin

Runtime: Remote (SSE)

Circulara Observe MCP plugin - meters your AI agents' token spend and carbon, free tier.

Human-likeness scoring of AI text vs 12 real personality profiles; free tools + x402 paid tier

18 pay-per-call AI tools: render, screenshots, DNS, SSL & WHOIS. x402 + free daily tier.

Invinoveritas

Runtime: uvx

Bitcoin/Lightning AI agent platform: paid reasoning, browser/code exec, sats marketplace.

Pulsefeed X402

Runtime: npx

Trust & safety layer for x402 agent payments: before your agent pays an x402 endpoint, verify it is safe — liveness, scam/anomaly scan (payTo hijack, bait-and-switch, honeypot), and on-chain receiver verification. 70% of x402 endpoints are dead or scams; only half of "healthy" listings work. Free /verify + an open Trust Score. npx -y pulsefeed-x402-mcp

x402 trust scans, readiness checks, and pre-payment verification for agents calling paid APIs.

Website intelligence audits for AI agents: free preview plus x402-paid Agent Readiness scoring

Vantic

Runtime: npx

Verify an AI agent's payment authority: signed mandates, allowlists, and tamper-proof receipts.