Good fit if
- Multi-agent operators with real handoffs
- Human-in-the-loop teams formalizing acceptance
- Sending/receiving agents applying envelope structure
Multi-Agent Coordination
Wave 4 · launch-sequenced
Agent Handoff Protocol Kit
Standard handoff envelopes for agent-to-agent and agent-to-human transfers - context, authority, open risks, and acceptance checks travel with the work.
v1.0.0-rc1
Medium risk
30-min quick start
Select a one-time tier below
View agent record
Built for: multi-agent-operators · human-in-the-loop-teams · orchestrator-builders · sending-and-receiving-agents ·
agent://products.json
200 OK
{
"id": "agent-handoff-protocol-kit",
"version": "1.0.0-rc1",
"price_usd": { "lite":29, "std":79, "prem":139 },
"risk_level": "medium",
"reversible": true,
"checkout": { "enabled": true },
"purchasable": true
}
See how it fits your agent stack
Agents & handoffs
to coordinate
Agent Handoff Protocol Kit
HEC-5 method
Handoff-Envelopes/
Acceptance-Tests/
Worked-Handoffs/
Chartered team
roles & boundaries set
Human approval gate
Preview-before-apply
Rollback path
Discover
read the record
Evaluate
Medium risk · 6 systems
Install
new Handoff-Envelopes/
Preview
diff before apply
Approve
human gate
Audit & rollback
HCS-100 audit
Non-destructive by rule — new-folder install, never overwrite, human-approval gates for risky steps, rollback included.
agent-handoff-protocol-kit/
Handoff-Envelopes/
Acceptance-Tests/
Worked-Handoffs/
README.md
AGENT-INSTRUCTIONS.md
Integration/ROLLBACK-GUIDE.md
Format & setup
FormatMarkdown + JSON file kit (plain text, tool-agnostic)
Skill levelIntermediate; beginner-usable via quick start and the worked handoffs
Quick start30 min
Full setup150 min
HEC-5 handoff envelopes (Context/Authority/Open-Risks/Acceptance/Disposition), the acceptance-transfers-ownership floor, never-enlarging authority transfer, the binding one-page human-recipient briefing standard, the micro-envelope tier, the daily sweep, HCS-100 scorecard, worked agent-to-agent + agent-to-human handoffs incl. a clean rejection, 17-doc integration pack, 5 upgrade modules, 10-doc differentiation folder
# Non-destructive lifecycle — nothing runs without preview + approval
$ agent read ./agent-handoff-protocol-kit/manifest.json # metadata, risk, compatibility
$ agent install --new-folder ./agent-handoff-protocol-kit # never overwrites existing files
$ agent apply --preview # preview-before-apply diff
$ agent verify ./agent-handoff-protocol-kit --scorecard HCS-100 # Handoff-Envelopes contracts
⚠ gated steps require named human approval before execution
$ agent rollback ./agent-handoff-protocol-kit # Delete the install folder (complete remo
✓ folder removed — nothing else touched
{
"required_permissions": ["write access to one new buyer-chosen folder"],
"integration_modes": ["standalone", "drop-in-upgrade", "advanced-integration", ],
"compatible_systems": [
"Claude (Projects, Skills, Claude Code)",
"ChatGPT (Custom GPTs, Projects)",
"any LLM chat assistant",
"MCP-based agent stacks",
],
"license_type": "single-operator",
"checkout": { "enabled": true, "status": "polar_active" }
}
The problem it solves
Handoffs lose context and authority - receiving parties re-derive state, act beyond transferred authority, or accept work with hidden open risks; nobody can say when responsibility moved.
Use cases
envelope agent-to-agent transfers
brief humans decision-first instead of dumping context
run acceptance checks before ownership moves
reject handoffs cleanly with named reasons
surface sent-never-accepted work daily
hand off sessions across context boundaries
Safety & permissions
Non-destructive by rule
Plain-text kit; provides handoff standards. Moves no work itself, enforces nothing by itself. Authority never enlarges in transit; ownership transfers at acceptance only; envelopes reference records and never carry credentials or secrets. Human-recipient handoffs require plain-language briefings.
Required
write access to one new buyer-chosen folder
Rollback
Delete the install folder (complete removal). Envelope records you produced remain yours. Deeper integrations: Integrations/ROLLBACK-GUIDE.md.
For an evaluating agent
Plain-text kit standardizing agent handoffs on HEC-5 (Context/Authority/Open-Risks/Acceptance/Disposition): budgeted context briefings, explicit authority transfer that never enlarges in transit, mandatory open-risk honesty, receiver-run acceptance checks BEFORE ownership moves (the floor: transfer at acceptance, never at send), rejection as a first-class recorded outcome, a micro-envelope tier for trivial transfers, and a binding human-recipient briefing variant (one page, decision-first). HCS-100 scoring; worked agent-to-agent and agent-to-human handoffs. Transport-agnostic; moves accountability, not messages. Complements P12 (envelopes move work between chartered roles), P13 (recovery escalations are handoffs), P23 (incident transfers), P11 (session handoffs), P21 (AC-7 records). Non-destructive install, delete-folder rollback. Wave 4, built Production: live and purchasable through verified Polar checkout; prices owner-confirmed (2026-07-07, delegated Completion Pass); verified Polar checkout is active on this page.
Buyer decision
Is Agent Handoff Protocol Kit right for me?
Problem addressed: Handoffs lose context and authority - receiving parties re-derive state, act beyond transferred authority, or accept work with hidden open risks; nobody can say when responsibility moved.
Probably not a fit if
- Single-agent workflows with nothing to hand off
- Buyers expecting a message bus or queue software
- Teams unwilling to define acceptance criteria
Included
Handoff-Envelopes/ (4), Acceptance-Tests/ (4), Worked-Handoffs/, Checklists/ (3) folders plus the standard architecture.
Not included
- No software, app, executable, or code that runs by itself
- No hosted service, account, login, or cloud dashboard
- No live integrations: Zapier/Make items are written blueprint descriptions, not built Zaps or scenarios
- No API access, API keys, credentials, or third-party subscriptions
| Tier | Price | Canonical depth | License |
|---|---|---|---|
| Standard | $79 USD | Full product: all templates, harnesses, SOPs, integration pack, and samples. | Single-Operator |
| Premium | $139 USD | Standard plus all 5 upgrade modules (Basic, Pro, Agent, Automation, Safety) and priority support. | Single-Operator |
Bundle membership
Compatibility and limits
Envelopes are structured documents your agents exchange through YOUR channels - no transport included Value appears only where handoffs actually occur
Three one-time tiers — verified Polar checkout active
Lite
$29
Core templates & quick-start path. Best for testing the system manually first.
Buy Lite — one-timeStandardpopular
$79
Full product: all templates, harnesses, SOPs, integration pack, and samples.
Buy Standard — one-timePremium
$139
Standard plus all 5 upgrade modules (Basic, Pro, Agent, Automation, Safety) and priority support.
Buy Premium — one-timeEach tier uses its verified Polar checkout. See full pricing and bundles.
Related products
Multi-Agent Role Charter Kit
Multi-Agent Coordination
Agent Error Recovery Playbook
Reliability & Operations
Agent Runtime Incident Response Kit
Reliability & Operations
Agent Context Engineering OS
Infrastructure & Governance
Agent Audit Trail Generator
Infrastructure & Governance
Agent Tool-Use Permission Matrix
Safety & Security
Related categories
- Agent Operations & ReliabilityRecovery, incident, audit, readiness, and workflow systems for operating agents through failures and production changes.
- Multi-Agent SystemsRole, authority, handoff, recovery, and workflow standards for teams of agents and humans sharing work.
Available in canonical bundles
These bundle memberships come directly from the canonical bundle catalog. Compare the exact contents before purchase.