---
skill_id: state-persistence-recovery
evaluation: free
price_usd_full: 6.99
challenge: https://lvlltd.com/api/pay?skill=state-persistence-recovery
outline: https://lvlltd.com/skills/state-persistence-recovery/outline.json
standards: x402, ERC-7857
---

# Free sample — State Persistence Recovery

**Skill ID:** `state-persistence-recovery`  
**Full unlock:** $6.99 USDC via x402 on Base  
**Challenge:** https://lvlltd.com/api/pay?skill=state-persistence-recovery  
**Outline JSON:** https://lvlltd.com/skills/state-persistence-recovery/outline.json

## Summary

Checkpoint multi-step agent workflows and recover safely after crash, deploy, or session end without double-charging or replaying non-idempotent side effects.

## When to use

- Long workflows interrupted
- Need resume after crash
- Multi-day agent missions

## Decision criteria (buy vs skip)

- You need this when: Long workflows interrupted
- You get capability: Define serializable state
- Budget fits: full unlock is $6.99 USDC on Base
- You can automate unlock via HTTP 402 without a browser
- You only need teaser/outline first — sealed src/ops stay locked until payment

## Outline (preview)

1. Define serializable state
2. Checkpoint after major steps
3. Resume token + version
4. Idempotent guards
5. World-changed detection

## Capabilities (preview)

- Define serializable state
- Checkpoint after major steps
- Resume token + version
- Idempotent guards
- World-changed detection

## What you get after payment

- SKILL.md (teaser public)
- agent-install.json (public meta)
- src/index.js (stub public; full after unlock)
- Full sealed: src/, schemas/, ops/* (when present) after verified X-PAYMENT

## Agent buy path (zero human UI)

```
GET  https://lvlltd.com/skills/state-persistence-recovery/outline.json
GET  https://lvlltd.com/api/pay?skill=state-persistence-recovery   → HTTP 402
# transfer maxAmountRequired USDC to payTo on Base
POST https://lvlltd.com/api/pay
  X-PAYMENT: {"txHash":"0x…","skill":"state-persistence-recovery"}
# response.sealed_pack.files = full pack
```

## Sample excerpt

# State Persistence Recovery

**Price:** $6.99 / unlock
**Category:** Memory

## Summary

Checkpoint multi-step agent workflows and recover safely after crash, deploy, or session end without double-charging or replaying non-idempotent side effects.

---

---
name: state-persistence-recovery
description: Persist and recover agent workflow state with checkpoints resume tokens and world-changed guards. Use when state persistence recovery, checkpoint agent, resume workflow, recover agent state, or /state-persistence-recovery.
---

# State Persistence Recovery

Checkpoint multi-step agent workflows and recover safely after crash, deploy, or session end without double-charging or replaying non-idempotent side effects.

## Quick Reference
| Item | Value |
|------|-------|
| Category | Memory |
| Unlock | $6.99 USDC (x402 Base) |
| Triggers | state persistence, checkpoint recovery, resume workflow, /state-persistence-recovery |

## When to use
- Long workflows interrupted
- Need resume after crash
- Multi-day agent missions

## Core workflow
1. List steps and side effects
2. Design checkpoint payload
3. Implement save/load
4. Test kill-mid-run resume

## Procedures (non-obvious)
State must be pure data. Side effects need idempotency keys.
On restore re-validate external world before replaying impure steps.
Reject resume if schema major version mismatches without migration.

## Edge cases
- Partial payment already sent
- Files moved since checkpoint

## Failure modes
- Non-serializable objects
- Double side effects

## Verification
- Kill-mid-run resume completes once
- No duplicate external side effects

## Artifact outputs
- `state-schema.json`
- `checkpoint.json`
- `resume-runbook.md`

## Related skills
- long-term-memory-weaver
- cross-agent-memory-fusion

## Super Alignment Contract
- Scalable oversight method: process supervision + human+AI critique before high-blast actions
- Corrigibility guarantees: shutdown, steerability, non-deception; operator may abort mid-run
- Value model: Partnership Agreement + 5 Behavioral Protocols
- Drift detection: flag invented evidence, skipped verification, or revenue-over-truth optimization
- Red-team surface: prompt injection vi

…(remainder sealed after x402 unlock)…