langgraph-persistence SKILL.md skillA
langgraph-persistence from akillness/jeo-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add akillness/jeo-skills/langgraph-persistence@git:20260919.9f2a908Pins git:20260919.9f2a908 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- akillness/jeo-skills
- Path
.agent-skills/langgraph-persistence/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260919.9f2a908, committed Sep 19, 2026
- Size
- 18,529 bytes
- Repository stars
- 52
- License
- none declared
INVOKE THIS SKILL when your LangGraph needs to persist state, remember conversations, travel through history, or configure subgraph checkpointer scoping. Covers checkpointers, thread_id, time travel, Store, and subgraph persistence modes.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
<overview>
LangGraph's persistence layer enables durable execution by checkpointing graph state:
- **Checkpointer**: Saves/loads graph state at every super-step
- **Thread ID**: Identifies separate checkpoint sequences (conversations)
- **Store**: Cross-thread memory for user preferences, facts
**Two memory types:**
- **Short-term** (checkpointer): Thread-scoped conversation history
- **Long-term** (store): Cross-thread user preferences, facts
</overview>
<checkpointer-selection>
| Checkpointer | Use Case | Production Ready |
|--------------|----------|------------------|
| `InMemorySaver` | Testing, development | No |
| `SqliteSaver` | Local development | Partial |
| `PostgresSaver` | Production | Yes |
</checkpointer-selection>
---
## Checkpointer Setup
<ex-basic-persistence>
<python>
Set up a basic graph with in-memory checkpointing and thread-based state persistence.
```python
from langgraph.checkpoint.memory import InMemorySaver
from langgraph.graph import StateGraph, START, END
from typing_extensions import TypedDict, Annotated
import operator
class State(TypedDict):
messages: Annotated[list, operator.add]
def add_message(state: State) -> dict:
…Read the whole file at its exact version.
How to install
mdr add akillness/jeo-skills/langgraph-persistence@sha256:0a9a4f36e6d7895aThe line at the top of this page pins the label git:20260919.9f2a908, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_6zea3yl7km2x67at)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 19, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (18529 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
akillness/jeo-skills · 52 stars · license none declared · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_6zea3yl7km2x67at GET https://markdownregistry.com/api/v1/resolve?ref=akillness/jeo-skills/langgraph-persistence GET https://markdownregistry.com/api/v1/blob/0a9a4f36e6d7895a273ce0882655e57023d2d992d4fde8e033e2936ac1df789e
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.