Tracking: Hanzo hanzoai/agent reference integration (paid SOW)

[abhicris]

Problem

Hanzo ships agent runtime infra (IAM, durable-workflow, hanzoai/agent tool-call layer). Switchboard ships the programmable-payment substrate (x402 + AgentEscrow + MPC wallet). The integration that maps cleanly is Switchboard as the payment runtime below hanzoai/agent's tool-call layer.

This is a tracking issue for the paid scoping engagement. Deliverable is a public reference deploy with both org logos, plus a joint technical writeup.

Proposed Approach

Milestone breakdown (~4-5 weeks total):

M1 — Integration architecture doc (Week 1-2):

• x402 envelope + AgentEscrow lifecycle mapped onto hanzoai/agent's tool-call lifecycle
• Trust boundaries
• MPC committee composition: kcolbchain node + Hanzo node + 1-2 external (depends on issue Wire AgentRegistry + AgentEscrow to MPC committee custody via luxfi/mpc #77 landing)

M2 — Reference implementation (Week 2-3):

• Minimal viable deploy: one real agent flow (code-execution-pay OR inference-pay OR storage-pay — Hanzo's call)
• Public repo with both org logos
• E2E test that runs the flow end-to-end

M3 — Joint technical writeup + benchmarks (Week 4):

• Loom walkthrough
• Hanzoai blog post + cross-post on switchboard docs
• Latency / gas / cost numbers

M4 — Handoff + production-readiness checklist (Week 5):

• 30-min sync on what unblocks a production deployment
• Notes on hosted-Switchboard-inside-Hanzo-enterprise (if interesting on their side)

Acceptance Criteria

• M1 doc reviewed and signed off by both Hanzo + kcolbchain technical leads
• M2 reference deploy passes E2E test in CI
• M3 writeup published with both org bylines
• M4 handoff doc + production checklist filed

References

• Issue Wire AgentRegistry + AgentEscrow to MPC committee custody via luxfi/mpc #77 — MPC committee custody (M1 dependency)
• Issue LP-183 reference impl: Go port of ZAP envelope decode precompile (renumbered from LP-182) #75 — LP-182 Go port (forward dependency for production)
• internal: see Hanzo paid SOW scoping doc (2026-06-01 outbound) and stress-test section 3.2