SLOPSHOPPER

auto-effort

Auto effort: the decision model rates each prompt and the turn it starts runs at that effort.

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v0.1.0NOASSERTIONupdated 2026-10-03kzarzycki/claude-mods/plugins/auto-effort
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Preview · a replayed session in a sandbox
claude · ~/work/app · auto-effort
› fix the failing auth test and add an audit log call ⏺ Read(src/auth.ts) ⎿ Read 6 lines ⏺ Update(src/auth.ts) ⎿ Added 2 lines, removed 1 line ⏺ Bash(bun test) ⎿ 3 pass, 1 fail ● Done. refresh now rejects expired claims and logs an audit event. ✻ Worked for 42s · done 4:20 PM › /effort-rate ⎿ auto-effort: usage: /effort-rate <prompt> (ceiling xhigh) ────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── › ? for shortcuts
README

claude-mods

Claude Code mods: plugins whose hooks run inside Claude Code's engine through the in-process $ API. Each one installs on its own from this repository's plugin marketplace. Mods that make decisions with a model (auto-effort, resume-on-stop, ttsr-rules) depend on decision-model, which provides that model.

oh-my-pi features

The first set rebuilds features of oh-my-pi (omp), a coding-agent harness, as mods. The research behind it rates every omp feature by how naturally it fits Claude Code: proposal (written before the build, where the project was called omc). The rest of this README covers that set: how to install it, how it works, and what building it found out about the platform.

ModWhat it does
decision-modelThe decision model, for other mods: $.decision.ask({ state, questions }), with typed questions (choice, noul = probability of yes, score) in the request and answer shape of TypeSafe's System One API. Any endpoint that speaks that protocol is a backend (presets openrouter and typesafe, or a URL; Jev is the default model). Without a key, a small Claude model answers the same questions as text. It does no deciding of its own. /decision shows the backend and every recent decision with the mod that asked; /decision ask <question> -- <state> tries one.
auto-effortAuto effort: asks the decision model how open-ended each prompt is and runs that turn at the chosen effort, up to a ceiling. /effort-rate <prompt>.
resume-on-stopUnexpected stops: a turn that ends on "Let me run the tests next." without acting is spotted by the decision model and gets one resume turn.
ttsr-rulesomp's TTSR rule files (condition, scope, globs, question) from ~/.omp/agent/rules, .omp/rules, ~/.claude/ttsr, .claude/ttsr. A condition rule denies the tool call that would break it and hands the model the rule as the reason. A question rule is put to the decision model after each turn; a yes leaves the rule for the model's next turn. /ttsr, /ttsr reload.
compact-methodsTwo of omp's compaction methods. /compact shake moves old tool output to files under ~/.claude/compact-methods/<session>/ and leaves a pointer the model can Read (no model call). /compact handoff [focus] replaces the context with a handoff document written by a fork of the main thread. autoMethod picks what runs when the context fills.
agent-hub/hub pane: this session's subagents with status, model, turns, tokens and their latest answer, plus a box that sends a message to a running one. /hub list, /hub send <id> <message>.
eval-kernelOne eval tool backed by a long-lived Bun kernel. State persists between cells (top-level declarations, imports). Cells call Claude Code tools (await tool.Read({ file_path })), models (completion()), subagents (agent(), with a JSON Schema schema for a parsed answer) and the decision model (judge(), when decision-model is loaded), in parallel with Promise.all. A subagent's completion notice goes to the cell, not the conversation. Interrupting a cell resets the kernel. Every call goes back through Claude Code, so permissions and other mods' hooks still apply. /eval <code>, /eval vars, /eval reset.

Install

Built and tested on Claude Code 2.1.288. The mods use the in-process $ hook API, so older versions won't load them.

From GitHub (to use them)

claude plugin marketplace add kzarzycki/claude-mods
claude plugin install auto-effort@claude-mods     # pulls in decision-model
claude plugin install resume-on-stop@claude-mods
claude plugin install ttsr-rules@claude-mods
claude plugin install compact-methods@claude-mods
claude plugin install agent-hub@claude-mods
claude plugin install eval-kernel@claude-mods

Pick any subset; each mod works alone, and the three that make decisions pull in decision-model. Inside a session, /plugin does the same from a menu. claude plugin marketplace update claude-mods fetches new versions.

From a clone (to change them)

git clone https://github.com/kzarzycki/claude-mods && cd claude-mods
claude --plugin-dir plugins/decision-model --plugin-dir plugins/auto-effort   # one session

To load them in every session, including ones another tool starts (omnigent, an IDE), list the folders in ~/.claude/settings.json; an interactive session reloads a mod when you save its files:

{ "env": { "CLAUDE_CODE_PLUGIN_DIRS": "/path/to/claude-mods/plugins/decision-model:/path/to/claude-mods/plugins/auto-effort" } }

Options of mods loaded this way are under <name>@inline (in /config, or claude plugin configure decision-model@inline).

Setup

  • Jev for decisions. Without a key, decision-model asks Claude Haiku. To use Jev, give it an OpenRouter key without echoing it: ``sh read -rs K && printf '{"apiKey":"%s"}' "$K" | claude plugin configure decision-model@claude-mods --values-stdin; unset K ` (decision-model@inline for a clone), or set OPENROUTER_API_KEY. A TypeSafe key needs "endpoint":"typesafe" too; endpoint also takes the URL of any other System One server, with model naming its model. /decision` shows which backend answers.
  • eval-kernel needs Bun on the PATH (or its bun option set to one).
  • TTSR rules are Markdown files in .claude/ttsr/ (project) or ~/.claude/ttsr/; existing omp rule folders are read too. See e2e/ttsr.sh for one of each kind.

Checks

  • scripts/check.sh: validate, unit-test (claude plugin test) and type-check every mod, plus the kernel's self-check. No model calls, under ten seconds.
  • e2e/run.sh [decision eval ttsr compact hub]: real claude sessions with the mods loaded, asserting on output and on files the mods write. They make real model calls; the whole run takes about four minutes. hub and the question-rule check drive an interactive session through expect, because headless claude -p differs there (see below).

How the pieces work

  • A decision model, and the places that use it. decision-model owns the protocol and the backend; each place a decision is made (effort, stops, question rules) is its own mod that asks through $.decision.ask and names its purpose for the log. Swapping Jev for another model, or for Claude, changes no consumer.
  • $.decision across mods. A mod adds a noun to $ in engine.create. The noun's methods are only placeholders: calling $.decision.ask(x) raises the event decision.ask, which decision-model's hook answers with a $ of its own. A $ captured at engine.create can't be used later; the validator refuses it.
  • Eval kernel transport. A mod can write to a child's stdin only once, so the kernel serves HTTP on a Unix socket instead ($.http.fetch with socketPath). A cell that needs the host parks the call and returns it as a call event; the mod runs it and answers with /resume.
  • Subagents from a cell. agent() spawns the subagent and the eval hook waits on /next. The subagent's hand-back (SubagentHandback, or its final turn.complete) answers the call through /answer. Every wait happens inside $.http.fetch, which doesn't count against the hook's 10-second budget. Waiting on an ordinary promise would count.
  • Kernel lifetime. The kernel is started from session.start and restarted when it exits (/eval reset simply exits it). It dies with the mod's module, and a parent-pid watchdog ends it if Claude Code dies.

What the spike found about the platform

Each item was observed in a run, not read from docs.

  • Settings rows are interactive-only. Plugin userConfig rows are in $.config.list() in an interactive session but not under claude -p, where only the engine's 40 rows come back.
  • Notes appended after the last turn are lost headless. A $.session.append made after the last turn of a claude -p run never reaches the transcript, because the process exits. Interactively the model reads it on its next turn.
  • Compaction can't start from a command. A command.run hook may not call $.session.compact; the engine refuses because the command holds the turn. Hence /compact shake, not /shake.
  • Fork can fail after a resume. $.model.fork has nothing to fork right after a session is resumed headless. Handoff falls back to $.model.complete over the messages session.compact passes in.
  • A missing dependency blocks the load. A mod whose dependencies aren't loaded doesn't load at all. A marketplace install pulls the dependency in (+ 1 dependency).
  • Jev returns real distributions; the Claude backend can't. Jev's choice answers carry probabilities (xhigh 0.99, high 0.01, confidence 0.98); the Claude text judge answers one-hot. Jev's noul can sit near the middle where a reader would say yes: "Is DROP TABLE users; in production irreversible?" came back 0.51, so thresholds need tuning per question.
  • Child sessions don't save transcripts. A session started from inside another Claude Code session inherits CLAUDE_CODE_CHILD_SESSION and stops saving transcripts; the e2e scripts unset it.
  • Haiku subagents can miss the task. A Haiku subagent sometimes answers its injected system context ("System initialization acknowledged…") instead of the task. The e2e checks use Sonnet for subagents.
  • Test-kit gaps (claude plugin test):
  • A test hook on session.append never sees $.session.append.
  • A test hook answering agent.spawn gets no agent id.
  • Test plugins run without their closures.

Those paths are covered by e2e instead.

Not done or not verified

  • Other System One servers. Jev through the OpenRouter preset is checked live (the decision and ttsr e2e suites pass against it, answering as typesafe/jev-1.13-20260917). The TypeSafe preset and custom URLs are checked only against faked replies.
  • Steering a running subagent (/hub send, the pane's input). No automated check: the kit can't intercept $.session.append, and an e2e needs a subagent that stays running long enough.
  • TTSR rules scoped to edit/write miss Bash. A model that's refused a Write can write the same file with printf … > file (seen in an e2e run). Scope a rule to tool:bash too if that matters; matching shell redirections to file globs isn't done.
  • Eval cell timeouts. A cell has no timeout. A synchronous infinite loop blocks the kernel until /eval reset (or reset: true). agent()'s schema is parsed, not validated: a wrong shape reaches the cell as is.
  • omp features left out of this MVP. Snapcompact, omp's soft compaction, idle compaction, TTSR rules on streamed text (Claude Code can't take back text it has already shown), and multi-vendor models.
Source 1 files
hooks/register.ts 68 lines
1import type { EngineInterface, Register } from "claude-code";
2
3type Question = Parameters<EngineInterface["decision"]["ask"]>[0]["questions"][string];
4
5// auto-effort: asks the decision model how open-ended each prompt is and runs the turn it starts at
6// that effort. Levels and wording copied from oh-my-pi (auto-thinking/classifier.ts), measured there.
7
8const LEVELS = {
9  low: "One obvious solution, mechanically applied: target, mapping, or fix given.",
10  medium: "A few candidates in a localized area, or one small trap: which line breaks a test, one boundary case.",
11  high: "Several viable designs or candidate causes: API shape, policy choice, a known cause whose fix needs a design choice.",
12  xhigh: "Open cause of flaky, concurrent, or stale behavior; solutions that are easy to get subtly wrong (races, invariants, cross-version compatibility).",
13  max: "Meets xhigh and at least one of: no reproduction to work from, irreversible or data-loss operation, or a live cutover that must stay correct while running. xhigh is required; difficulty alone is insufficient.",
14} as const;
15type Effort = keyof typeof LEVELS;
16const ORDER = Object.keys(LEVELS) as Effort[];
17
18export function effortQuestion(ceiling: Effort): Question {
19  const allowed = ORDER.slice(0, ORDER.indexOf(ceiling) + 1);
20  return {
21    type: "choice",
22    instructions:
23      "The state is a user's request to a coding agent. Judge how open-ended its problem is: whether the fix or design is given, or which causes or designs remain open. Choose the reasoning effort that needs, judging inherent difficulty rather than phrasing politeness or verbosity. Volume of work never raises it. If torn between levels, choose the lower one" +
24      (allowed.includes("max") ? ", except between xhigh and max: a request meeting the max conditions takes max." : "."),
25    criteria: Object.fromEntries(allowed.map(l => [l, LEVELS[l]])),
26  };
27}
28
29export const register: Register = (on, options) => {
30  const ceiling = (ORDER.includes(options.maxEffort as Effort) ? options.maxEffort : "xhigh") as Effort;
31  let pending: Effort | undefined;
32  let turn: string | undefined;
33  let applied: Effort | undefined;
34
35  on("prompt.submit", async ($, e, next) => {
36    // A prompt a plugin queued (a resume, a continuation) keeps the effort already chosen.
37    if (e.origin?.kind === "plugin" || !e.text.trim() || e.text.trimStart().startsWith("/")) return next(e);
38    try {
39      const r = await $.decision.ask({ purpose: "effort", state: e.text, questions: { effort: effortQuestion(ceiling) } });
40      const a = r.answers.effort;
41      if (a?.type === "choice") pending = a.choice as Effort;
42    } catch {
43      // The decision log (/decision) records the failure; the turn runs at the session's effort.
44    }
45    return next(e);
46  });
47
48  on("turn.step", async function* ($, e, next) {
49    if (e.agentId) return yield* next(e);
50    if (pending && e.index === 0) {
51      [turn, applied, pending] = [e.turnId, pending, undefined];
52      $.ui.status(`effort ${applied}`);
53    }
54    return yield* next(applied && e.turnId === turn ? { ...e, effort: applied } : e);
55  });
56
57  on("session.start", async ($, e, next) => {
58    await $.command.register({ name: "effort-rate", description: "auto-effort: rate a prompt's effort without running it", argumentHint: "<prompt>" });
59    return next(e);
60  });
61
62  on("command.run", { command: "effort-rate" }, async ($, e) => {
63    if (!e.args.trim()) return { text: `usage: /effort-rate <prompt> (ceiling ${ceiling})` };
64    const r = await $.decision.ask({ purpose: "effort", state: e.args.trim(), questions: { effort: effortQuestion(ceiling) } });
65    return { text: `effort: ${JSON.stringify(r.answers.effort)} via ${r.backend}/${r.model}` };
66  });
67};
68