Add AgentFeed to ecosystem (Services/Endpoints)

[seekdaseek]

Adds AgentFeed under Services/Endpoints.

AgentFeed is a live crypto market data API for agents, paid per call in USDC via x402 —
on Solana (exact/SVM, CDP facilitator) and Base (exact/EVM, eip155:8453). No API keys.

Meets the Services/Endpoints requirements:

• Working mainnet integration: 15 paid routes settling real USDC on Solana mainnet and Base.
• API documentation: full route catalog with per-call pricing at https://x402.ochinimus.app
• Bazaar discovery metadata is live, so the routes are machine-discoverable.

Also shipped as an MCP server and as @seekdaseek/plugin-agentfeed on npm (merged upstream
into elizaOS).

Source: https://github.com/seekdaseek/agentfeed

[cb-heimdall]

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