Add 8k4-trust: on-chain agent trust scoring + discovery via 8K4 Protocol

[8k4-dev]

8k4-trust

Trust scoring and agent discovery for on-chain AI agents via 8k4 Protocol (ERC-8004).

What it does:

• Check trust scores before transacting with or delegating to another agent
• Search for task-aligned agents ranked by trust, relevance, and contactability
• Pull full agent profile cards with segment breakdowns
• Look up all agents registered to a wallet

Coverage: 82,000+ agents indexed across Ethereum, Base, and BSC.

Access: Free tier available (no API key needed for basic endpoints; self-serve keys unlock 1,000 req/day). Production agents can use x402 pay-per-request (USDC on Base) for unlimited throughput.

Key endpoints:

• GET /agents/search?q=<task> — find and rank agents for a task
• GET /agents/{id}/card — full agent profile + trust breakdown
• GET /agents/{id}/score — numeric trust score
• GET /agents/{id}/score/explain — qualitative trust explanation
• GET /agents/top — leaderboard

Links:

• API docs: https://api.8k4protocol.com/docs
• Website: https://8k4protocol.com
• GitHub: https://github.com/8k4-Protocol