Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add commands/jonathanprozzi/claude-utils/checkpointgit clone --depth 1 https://github.com/jonathanprozzi/claude-utilsWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00000 | $0.01402 |
| Opus 5 | $0.00000 | $0.00701 |
| Sonnet 5 | $0.00000 | $0.00280 |
| Haiku 4.5 | $0.00000 | $0.00140 |
Grade A, and why
checkpoint scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 149 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Create a timestamped checkpoint in the current daily session transcript.
Command Usage
/checkpoint- Create checkpoint with auto-generated summary/checkpoint [note]- Create checkpoint with specific note/context
What This Command Does
-
Identify the current transcript file:
- Look for
ai-chats/transcripts/YYYY-MM-DD/daily-session-YYYY-MM-DD.mdin the current vault - Use today's date
- Look for
-
Archive the current conversation:
- Create archive directory:
ai-chats/transcripts/YYYY-MM-DD/archives/ - Export full transcript to Markdown:
session-YYYY-MM-DD-HHMM-full.md - This preserves the full conversation at checkpoint time
- Create archive directory:
-
Generate checkpoint entry:
- Current timestamp (e.g.,
### ~3:45pm - Checkpoint) - Link to the archived full transcript
- If user provided a note, use that as the summary line
- Otherwise, generate a brief summary of what's been accomplished
- Include structured data matching PreCompact format
- Current timestamp (e.g.,
-
Append to transcript:
- Add the checkpoint entry to the "Session Log" section (before "## Session Handoff")
- Include key activities with [[wiki-links]]
- Include summary points
-
Update daily note:
- Find today's daily note at
journals/YYYY-MM-DD.md - Increment the checkpoint count (e.g.,
*(2 checkpoints)*→*(3 checkpoints)*) - Add a nested bullet with deep link to the checkpoint section
- Find today's daily note at
Checkpoint Entry Format (Transcript)
### ~[TIME] - Checkpoint
[Summary line - user note or auto-generated]. [[ai-chats/transcripts/YYYY-MM-DD/archives/session-YYYY-MM-DD-HHMM-full|Full transcript]]
**Session:** [[Session Type]] | [N] messages | [N] tool calls | [N] created | [N] modified
**Key Activities:**
- Created: `path/to/file` ([[Language]])
- Modified: `path/to/file` ([[Language]])
- [Other notable activities with wiki-links]
**Summary:**
- Key accomplishment 1 with [[wiki-links]]
- Key accomplishment 2
- Decisions or insights
---
Daily Note Entry Format
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 149 lines · 0 tokens per session scan A 88c9fdc7a95c
checkpoint is a command published in the GitHub repository jonathanprozzi/claude-utils (11 stars, last pushed 6mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,402 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other commands, from other repositories
checklist
Generate a custom checklist for the current feature based on user requirements.
clarify
Identify underspecified areas in the current feature spec by asking up to 5 highly targeted clarification questions and encoding answers back into the spec.
specify
Create or update the feature specification from a natural language feature description.
analyze
Perform a non-destructive cross-artifact consistency and quality analysis across spec.md, plan.md, and tasks.md after task generation.
converge
Assess the current codebase against the feature's spec, plan, and tasks, then append any remaining unbuilt work as new tasks to tasks.md so implement can complete it.
implement
Execute the implementation plan by processing and executing all tasks defined in tasks.md.