types

A reference for Splitrail’s data structures, including conversation messages and usage statistics. Splitrail is a system that analyzes coding-tool conversations and groups their activity by date.

In plain words
What is it for?
Use it when handling messages, token and cost metrics, daily summaries, applications, roles, hashes, or date-based aggregation.
Why use it?
It helps developers use the correct fields and types when working with Splitrail’s Rust code.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/piebald-ai/splitrail/types
Any agent
npx skills add Piebald-AI/splitrail --skill types
Clone the repo
git clone --depth 1 https://github.com/Piebald-AI/splitrail

Made for: Claude Code, Codex.

Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 234 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00028 $0.00234
Opus 5 $0.00014 $0.00117
Sonnet 5 $0.00006 $0.00047
Haiku 4.5 $0.00003 $0.00023

Measured 2d ago against content hash 18b9cb39844e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

types 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.

.claude/skills/types/SKILL.md · 30 lines

What it actually says

Key Types

Read src/types.rs for full definitions.

Core Types

  • ConversationMessage - Normalized message format across all analyzers. Contains application source, timestamp, hashes for deduplication, model info, token/cost stats, and role.

  • Stats - Comprehensive usage metrics for a single message including token counts, costs, file operations, todo tracking, and composition stats by file type.

  • DailyStats - Pre-aggregated stats per date with message counts, conversation counts, model breakdown, and embedded Stats.

  • Application - Enum identifying which AI coding tool a message came from.

  • MessageRole - User or Assistant.

Hashing Strategy

  • local_hash: Deduplication within a single analyzer
  • global_hash: Deduplication on upload to Splitrail Cloud

Aggregation

Use crate::utils::aggregate_by_date() to group messages into daily stats. See src/utils.rs.

Changes

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.

  1. 2d ago First seen · 30 lines · 28 tokens per session scan A 18b9cb39844e

Subscribe to this mod's changes

types is a skill published in the GitHub repository Piebald-AI/splitrail (218 stars, last pushed 11d ago), licensed MIT. It adds 28 tokens to every session and 234 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 2026-08-30.