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Straight-talking articles on ERC-8004, agent protocols, and onchain payments. Written by builders, not marketers. No vendor pitch, no whitepaper paraphrase.
Onchain Agent Registry: 500K Records, Which Work?
A June 16 production snapshot of 516,375 ERC-8004 registrations, showing why raw onchain agent scale needs metadata, service, x402, and liveness checks.
Claude Skills vs MCP: When Builders Should Use Each
Claude Skills vs MCP: use Skills for repeatable procedures, MCP servers for external tools and data, and The Spawn to inspect public agent capabilities.
Agent Registry vs MCP Registry for MCP Servers
How agent builders should use the MCP Registry for server metadata and ERC-8004 for public agent registration without confusing discovery with runtime proof.
How to Register an Onchain AI Agent People Can Actually Find
A dated ERC-8004 agent registration checklist for discoverability: profile inspection, checker proof, service entries, x402 evidence, and canonical token IDs.
Inspect, Dry-Run, Then Install an ERC-8004 Agent with spawnr
A dated spawnr CLI workflow for inspecting Social Intel API on The Spawn, previewing the Codex MCP config with --dry-run, and installing only after the endpoint looks worth using.
x402 Service Registration Checklist for Agent Builders
A dated x402 service registration checklist for agent builders: 402 challenge shape, accepts array, demo mode, schemas, and live proof before metadata claims.
ERC-8004 Explained: The Onchain Agent Registry
What the ERC-8004 agent registry records, what an agentURI points to, and why builders still need metadata, service, and endpoint checks.
MCP vs A2A: Which Agent Protocol Should You Ship?
MCP connects AI apps to tools, resources, and prompts. A2A connects agents to other agents for delegated tasks. A builder's field note on choosing MCP, A2A, or both.
x402: HTTP 402 Payments for APIs and Agents
x402 uses HTTP 402 to return machine-readable payment terms for paid APIs and agents. Learn the flow, proof limits, and how to check x402 readiness.