This reverts commitcdbc2d0. The bump was a judgment call without evidence, and the planner design intent argues the other way: the plan Iron Law is "EVERY STEP THAT CHANGES CODE INCLUDES THE CODE" and tasks are sized so a subagent executes one "without judgement calls outside its remit" (planner/SKILL.md) — the planner exists precisely to remove design latitude from the implementer, which points at sonnet, not opus. opus is only justified to the degree real plans leave slack (RED-step invention, tree reconciliation, review repair), and that slack is measurable, not felt. Restore sonnet/high; a future bump should be grounded in the loop metrics (spec re-loop count, quality changes_requested rate, end-verify BLOCKED rate) via postmortem, not a gut call. The four fable gates (b591e75) are untouched.
11 KiB
Agent template
Every agent file follows the same structure. Deviations need a named reason in the agent's own body. The template was distilled from the AILang in-tree agents and refined to remove project- specific identifiers.
File layout
---
name: <agent-slug>
description: <third-person, "Use when…" or role description>
tools: <comma-separated tool list>
model: <opus | sonnet>
effort: <xhigh | high>
---
> Violating the letter of these rules is violating the spirit.
## What this role is for
<one short paragraph naming the failure mode the agent exists
to prevent>
## Standing reading list
<list of always-binding documents — the fixed always list (`CLAUDE.md`
plus `git log -10 --format=full`), the per-role standing reading the
project lists in its CLAUDE.md project facts, and the project's glossary
if it has one>
## Carrier contract
<what the dispatching skill hands the agent: task_text, diff,
hypothesis, etc. Agents do NOT open the project's plan or spec
directories directly — context curation lives at the skill level>
## Iron Law
<the non-negotiable rules of this role, as a code-fenced block of
short imperative lines>
## The Process
<numbered steps>
## Status protocol
<which terminal states this agent uses, and what evidence each
state requires>
## Output format
<word-budgeted, structured>
## Common Rationalisations
| Excuse | Reality |
|--------|---------|
| … | … |
(Calibrated to the past failure modes of this role.)
## Red Flags — STOP
- If you're about to do <X>, stop.
- …
Frontmatter conventions
name
The agent slug, lowercase kebab-case. No project prefix (the
old ailang-* prefix was an AILang-only convention; the
plugin's agent path is enough disambiguator).
Examples: architect, bencher, debugger, implementer,
tester, fieldtester, docwriter, grounding-check,
spec-skeptic, plan-recon, spec-reviewer, quality-reviewer.
description
One sentence. Third-person. Either "Use when…" or a role description. This is what the orchestrator (or a skill) reads to decide whether to dispatch the agent — keep it sharp.
tools
Comma-separated list of Claude Code tool names. No agent
receives Agent in its tools (no nested subagent dispatch).
The dispatching skill composes; agents do not call other
agents.
Common tool sets:
- Read-only review (architect, spec-reviewer, quality-reviewer,
grounding-check, spec-skeptic, plan-recon):
Read, Glob, Grep, Bash - Implementation (implementer, tester, debugger, docwriter,
fieldtester, bencher):
Read, Edit, Write, Bash, Glob, Grep
The autonomous execution loops are Workflow scripts, not agents
(implement/workflows/): they orchestrate the implementation phase
agents from the top level via agent() calls. The agents they
dispatch still carry no Agent tool — the no-nested-dispatch rule is
unchanged; the workflow simply does the orchestration the retired
implement-orchestrator agent used to fake with inline role-switches.
model
Mandatory. Every agent pins an explicit model — fable, opus or
sonnet, nothing else. An omitted field means the agent inherits the
session model, which routes the dispatch to whatever the user happens
to be chatting on — an unintended tier for every role that has not
earned its pin. Pinning removes that coupling.
Assignment rule, in priority order:
- Cycle-reach singleton gates — agents that run at most a
couple of times per cycle or bug AND whose miss silently
ratifies or poisons an entire cycle run
fable(owner-ratified 2026-07-20):architect(the drift verdict steering the next iteration),grounding-check(the autonomous sign-off signature under/boss),tdd-author(the RED executable-spec the GREEN side builds on),debugger(the root-cause a full RED→GREEN cycle rides on). Fable is the scarcest tier and shares its budget with a fable main session, so the set is CLOSED — extending it requires a fresh owner ratification — and a fable agent is never dispatched per-task inside a loop or in a parallel fan-out. Workflow scripts stay fable-free entirely; the implement-loop quality gate caps atopus. - Consequence of a miss — the remaining judgment roles —
errors still silently poison downstream work, but the role
either fans out, runs per-task, or feeds a decider rather than
gating a cycle (adversarial lenses, plan recon, field/bench
evidence, the in-loop quality review) — run
opus. Opus is the documented strength for code review, debugging, and deep reasoning. - Mechanical scope — tightly-scoped execution of a pre-made
plan, recon, extraction, compliance-diffing run
sonnet(near-opus coding quality at lower latency and cost). - Volume × wall-clock — agents dispatched per-task inside
loops or fanned out in parallel swarms multiply their model's
latency; they run
sonnetunless rule 2 overrides (currently onlyquality-reviewer, the loop's last correctness review). That override is itself size-conditioned (issue #30): consequence-of-a-miss scales with diff size, so the implement-loop dispatches the quality phase atsonnet/highwhen the spec-reviewer independently measured the diff at ≤25 changed lines touching no contract-referenced path, and atopus/xhighotherwise (including whenever the measurement is missing). The deterministic end-verify/mini-verify suite gate is what makes the lower tier defensible; the agent-file frontmatter keeps the opus default.
Current distribution: fable — architect, debugger,
grounding-check, tdd-author. opus — bencher, fieldtester,
plan-recon, quality-reviewer, spec-skeptic. sonnet — docwriter,
glossary-extractor, implementer, spec-reviewer, synthetic-user,
tester.
The same rule binds Workflow scripts: every agent() call passes an
explicit model: option, and fable is never a valid value there —
rule 1's gates are frontmatter agents, not workflow stages (see the
model-policy header comments in implement/workflows/*.js).
effort
Mandatory. Every agent pins an explicit reasoning effort — one of the
harness levels low | medium | high | xhigh | max, of which the plugin
uses two. An omitted field means the agent inherits the session
effort, coupling every dispatch's thinking budget to whatever the user
happens to be chatting at — the same session-state coupling the model
pin exists to remove. Effort follows the model split:
xhighon everyfableandopusagent. The judgement roles are the pipeline's quality floor; their thinking budget must not silently degrade because the session runs lower. The fable gates deliberately stay atxhigh, notmax— the marginal thinking is not worth the extra latency and scarce-budget burn.highon everysonnetagent. Tightly-scoped execution of a pre-made plan gains little fromxhighbut pays its latency on every dispatch — and these are exactly the roles dispatched per-task inside loops (wall-clock is the pipeline's efficiency metric). Not lower thanhigh: a sloppy in-loop step triggers re-loops that cost more wall-clock than the saved thinking.
Workflow scripts pin a third tier inline: schema-bound
extraction/verification stages that author no code (preflight,
plan-index, plan-extract[-all], snapshot, mini-verify, the standard
end-verify, build/suite verify) run medium via the agent() call's effort: option. As with
model:, every agent() call passes effort: explicitly — whether
frontmatter effort propagates through an agentType dispatch is
undocumented, so the scripts do not rely on it (see the policy header
comments in implement/workflows/*.js).
Sections in detail
Spirit-letter lead-in
The single line > Violating the letter of these rules is violating the spirit. is mandatory at the top. It exists to
forestall the "well, technically I didn't break the rule" class
of rationalisation.
What this role is for
One short paragraph. Names the failure mode the agent exists to prevent — not the success mode it enables. Failure-mode framing is sharper for the model: "this role exists because past attempts to do X without a dedicated reviewer led to Y" reads more forcefully than "this role helps with X".
Standing reading list
The plugin's skill body composes this list and passes it to the agent
via the carrier. It is built from a fixed always list — CLAUDE.md
plus git log -10 --format=full, binding on every role — extended by
the per-role standing reading the project lists in its CLAUDE.md project
facts. The agent's body says, prosaically: "Read everything in the
standing reading list before doing anything else."
The always list binds every role (agent file). The anonymous
schema-bound stages inside implement/workflows/*.js are tiered
below it (issue #31): verify-type stages read only the project-facts
build/test commands, tree/extraction stages read nothing — see
conventions.md § Standing reading.
When the project's CLAUDE.md project facts name a glossary path, that glossary is implicitly part of the always list, so every role reads the project glossary without a per-role entry.
The agent file itself does not hardcode file paths.
Carrier contract
The carrier is the small payload the skill hands the agent. It typically includes:
task_text— the spec excerpt or plan task verbatimdiff— for reviewers, the diff to reviewhypothesis— for the bencher, what it should testbug_symptom— for the debugger, the observable misbehaviourdrift_focus— for the architect, what part of the ledger to check
Agents do not open the project's plan or spec directories directly to fish for context. Context curation lives at the skill level so the orchestrator can see exactly what each agent was told.
Iron Law
A code-fenced block of short, imperative rules. These are the rules the agent will violate if it rationalises. Calibrate to past failure modes — abstract rules don't land; rules anchored to a named past mistake do.
The Process
Numbered steps. Each step is concrete — "Read X", "Run Y", "Write to Z" — not abstract phases like "explore" or "synthesise".
Status protocol
Specifies which terminal states the agent uses (see
pipeline.md) and what evidence each state requires. For
example: DONE requires "build green AND tests green AND no
new warnings".
Output format
Word-budgeted. Structured — usually a small set of named sections the orchestrator can quote in its commit body. The budget prevents agent reports from drowning the orchestrator's context.
Common Rationalisations
A table of excuse → reality. Calibrated to the past failure modes of this role. The point is to short-circuit the rationalisation before it derails the agent's process.
Red Flags — STOP
Bullet list of "if you're about to do this, stop" signals. Concrete, not abstract. "If you're about to write a fix without a failing test, stop" beats "be disciplined".