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 skills add PlamenTSV/plamen --skill state-sync-pruninggit clone --depth 1 https://github.com/PlamenTSV/plamenWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/plamentsv/plamen/state-sync-pruning)<a href="https://agentmods.dev/skills/plamentsv/plamen/state-sync-pruning"><img src="https://agentmods.dev/badge/skills/plamentsv/plamen/state-sync-pruning/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/plamentsv/plamen/state-sync-pruning"><img src="https://agentmods.dev/badge/skills/plamentsv/plamen/state-sync-pruning.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What 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 5.1 | $0.00028 | $0.02641 |
| Opus 5 | $0.00014 | $0.01321 |
| Sonnet 5 | $0.00006 | $0.00528 |
| Haiku 4.5 | $0.00003 | $0.00264 |
Grade A, and why
state-sync-pruning 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 6d 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 — 202 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Injectable Skill: State Sync and Pruning
L1 trigger:
L1_PATTERN=trueAND (sync/ORsnap_syncORfast_syncORstatesyncORpruningORsnapshot/detected in recon subsystem map) Inject Into:depth-state-traceordepth-edge-caseLanguage: Go and Rust Finding prefix:[SS-N]Status: v0.1 draft, Round 4 exemplars pending
Orchestrator Decomposition Guide
- Sections 1, 2: depth-state-trace (sync protocol state)
- Sections 3, 4: depth-edge-case (pruning races, growth)
- Section 5: depth-external (checkpoint trust)
When This Skill Activates
Recon identifies state sync or pruning code. State sync is the mechanism by which a new node catches up without replaying the entire history; pruning is how an existing node garbage-collects old state. Both are subtle: a bug in either can corrupt the node's state silently, leading to later divergence.
1. Sync Mode Fingerprinting
Identify the sync mode(s) supported:
| Mode | Description | Trust model |
|---|---|---|
| Full sync | Replay every block from genesis | Trustless (modulo consensus rules) |
| Fast sync | Download headers + recent state trie | Trusts weak subjectivity checkpoint |
| Snap sync (Ethereum) | Download flat account snapshots in ranges | Healing phase verifies root |
| Warp sync (Parity) | Download a snapshot of state at a past block | Trusts snapshot root |
| State sync (Cosmos) | Download state at a trusted height from peers | Trusts a configured height/hash |
| Checkpoint sync (Beacon) | Trusts a recent finalized checkpoint root | Weak subjectivity |
| Portal Network | Content-addressed historical storage | Trustless per item |
Write the mode(s) into the finding header.
2. Root / Checkpoint Trust
Every non-full sync mode depends on a root or checkpoint. Verify the trust chain:
- Where does the checkpoint come from? Hardcoded? CLI flag? RPC? Config file?
- What signs it? Nothing (pure trust)? A hardcoded key? The current validator set?
- Validity period: is the checkpoint rejected if older than X? Stale checkpoints permit long-range attacks.
- Rollback: if a checkpoint turns out to be invalid mid-sync, does the node recover cleanly?
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.
- 6d ago First seen · 202 lines · 28 tokens per session scan A 2f1f5edc54f2
state-sync-pruning is a skill published in the GitHub repository PlamenTSV/plamen (295 stars, last pushed 2d ago), licensed MIT. It adds 28 tokens to every session and 2,641 once invoked, about $0.0001 per session on Opus 5. 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 2026-09-03.
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