gezhi Project Setup

Use this skill when a user wants an agent to make an existing project runnable under gezhi, especially when the user can judge the finished thing but does not want to configure the build loop by hand.

Role in the One-Prompt Flow

llms.txt is the public entrypoint and router. This skill is the execution runbook. When an agent arrives from llms.txt, inherit the user-facing contract from that file, then use this skill for the concrete setup decisions:

• inspect the project;
• choose the canonical artifact;
• synthesize or select the producer;
• write gezhi.toml;
• validate the setup;
• report the exact next command.

Do not send the user back to read this skill. The skill is for the agent to execute on the user's behalf.

The deliverable is not just a gezhi.toml. The deliverable is a repeatable thing loop:

stable rebuild -> finished thing -> review -> bounded source work

For a non-expert user, success means they can run one command after setup and understand what artifact to inspect. Do not leave them with a partial config that only works if they already know the build system.

When to Use

• A user asks to "set up gezhi" for a project.
• A user provides a repository and a desired output such as a PDF, site, workbook, report, model metric, or slide deck.
• A user wants an agent to create the rebuild command and gezhi.toml.
• A user has a finished thing they can inspect but does not know the build system.

Do not use this skill for generic task planning, ordinary code review, or a project that has no inspectable thing.

Operating Rules

• Address the user by name if the host profile supplies one.
• Prefer live project evidence over README claims.
• Do not edit raw data, generated outputs, build products, .git/, or .gezhi/ unless the user explicitly asked for that exact operation.
• Ask the user only when the finished thing cannot be inferred safely.
• Keep the producer deterministic, idempotent, and easy to rerun.
• Completion belongs to the rebuilt thing and tik verdict, not to the tok agent's explanation.
• Treat every tok pass as source changes only. Tok must not declare the thing-level goal complete.
• If a command fails, preserve the exact failing command and the relevant output in your final report. Do not describe a setup as ready when validation did not pass.
• Do not edit unrelated README/docs/tests/source while setting up gezhi unless that file is directly required for the producer or goal config.

Workflow

0. Verify gezhi and Required Tools

Start with a cheap command check:

gezhi -h

If gezhi is missing, verify Python 3.11+ and install from GitHub:

python3 --version
python3 -m pip install --upgrade pip
python3 -m pip install "gezhi @ git+https://github.com/SiyaoZheng/GEZHI.git"

If tik.provider = "api" will be used, install the OpenAI extra:

python3 -m pip install "gezhi[openai] @ git+https://github.com/SiyaoZheng/GEZHI.git"

If you are inside a checked-out gezhi repository, prefer the local checkout:

python3 -m pip install -e '.[openai]'

Verify the command again:

gezhi -h

For a normal non-expert setup, do not disable the no-mistakes gate just to make the first real heartbeat easier. If no-mistakes is missing, either install it using the project installation docs or report it as the blocker before any real heartbeat.

1. Inspect the Project

Collect evidence before editing:

pwd
git status --short --branch
rg --files \
  -g '!node_modules/**' \
  -g '!.git/**' \
  -g '!*.jsonl' \
  -g '!*.sqlite*' \
  | sed -n '1,160p'

Look for:

• existing artifacts: output/, outputs/, dist/, build/, reports/, paper.pdf, slides.pdf, index.html, .xlsx, .parquet, metrics files;
• build entrypoints: Makefile, justfile, package.json, pyproject.toml, requirements.txt, renv.lock, environment.yml, Dockerfile, .github/workflows/, README, scripts/, notebooks/;
• source surfaces: src/, writing/, analysis/, notebooks/, app/, pages/, content/, slides/, tex/;
• generated surfaces that tok must not edit.

2. Choose the Canonical Artifact

Pick exactly one artifact path for [artifact].path.

Good artifacts are product-shaped and user-inspectable:

• publication PDF: outputs/writing/full_paper.pdf;
• slide deck: dist/slides.pdf or dist/deck.html;
• static site: dist/index.html;
• data report: reports/final.xlsx or reports/summary.html;
• benchmark: outputs/eval/metrics.json;
• package smoke report: build/goal-smoke.txt.

If multiple candidates exist, prefer the one mentioned by the user, the one documented as final, or the one downstream of the broadest build command.

Do not choose a stale output just because it already exists. The artifact must be reproducible by [producer].command. If several plausible artifacts remain, ask one short question that lists the candidates and then proceed from the answer.

If the project does not yet have a final artifact, use the closest inspectable product-shaped target, such as a runnable demo, generated HTML report, metrics JSON, or a smoke report file. Avoid abstract goals like "improve the codebase" because they cannot be checked by tik.

3. Synthesize the Producer

The producer is the command gezhi will run on every heartbeat. It must rebuild the finished thing from source.

Use an existing build command when it is already stable:

• make all
• make paper
• npm run build
• python3 scripts/orchestrator.py --full
• quarto render
• Rscript scripts/build.R

When the existing build path is unclear or multi-step, create a wrapper such as scripts/goal_producer.sh or scripts/build_goal_artifact.py. Prefer a shell wrapper for simple command composition and a Python wrapper only when structured checks or path handling matter.

Producer wrapper requirements:

• set -euo pipefail for shell wrappers.
• Resolve paths from the project root.
• Run the minimal commands needed to rebuild the artifact.
• Verify the configured artifact exists at the end.
• Print artifact path, size, modification time, and sha256 when available.
• Exit non-zero if the artifact is missing or empty.
• Keep command output short but useful for debugging.
• Avoid network calls unless the project already requires them.
• Do not mutate raw data or commit files.

Example scripts/goal_producer.sh:

#!/usr/bin/env bash
set -euo pipefail

cd "$(dirname "$0")/.."

make all

artifact="output/full_paper.pdf"
test -s "$artifact"

if command -v shasum >/dev/null 2>&1; then
  shasum -a 256 "$artifact"
fi
ls -lh "$artifact"

Make it executable:

chmod +x scripts/goal_producer.sh

Then set:

[producer]
command = "scripts/goal_producer.sh"

Before writing gezhi.toml, run the producer once if it is safe. If it fails, fix the producer path or report the exact blocker instead of continuing with an untested command.

4. Configure Tik

Choose the smallest evaluator that can reject bad artifacts.

Use oracle when a deterministic script can decide:

[tik]
provider = "oracle"
command = "python3 scripts/tik.py"

Use checklist when a project script runs a checklist-style review and should appear as a distinct tik provider:

[tik]
provider = "checklist"
command = "python3 scripts/checklist_review.py"

Use codex_file when a local Codex artifact review is appropriate and the artifact is a file:

[tik]
provider = "codex_file"
timeout_seconds = 1800
max_file_size_bytes = 25000000
max_output_tokens = 4096

Use claude_code_file when a local Claude Code artifact review is appropriate and the artifact is a file; it needs the claude CLI on PATH:

[tik]
provider = "claude_code_file"
timeout_seconds = 1800
max_file_size_bytes = 25000000

Use api when OpenAI-compatible Responses API file upload is intended and a Packy/OpenAI-compatible key is available through PACKYAPI_API_KEY, PACKYCODE_CODEX_KEY, OPENAI_API_KEY, or ~/.config/gezhi/api.env. This defaults to PackyAPI claude-fable-5:

[tik]
provider = "api"
timeout_seconds = 1800
store = false

If this API tik review needs a local skill, set skill = "skill-name" under [tik]; do not put /skill-name as the first prompt line for api.

Tik prompts must review the artifact, not the source diff. They must end with a JSON verdict that includes at least:

{
  "artifact_ready": false
}

For non-expert setup, prefer deterministic checks when they clearly catch missing, empty, malformed, or stale artifacts. Use model review only for quality judgments that a script cannot express.

5. Configure Tok

Tok's successful changes must show up under source write_dirs. Keep that audited source scope narrow and exclude generated output:

[tok]
provider = "codex_goal"
sandbox = "workspace-write"
write_dirs = ["src", "writing"]
codex_features = ["goals"]

Use claude_code_goal for the same pass through Claude Code; it needs the claude CLI on PATH and ignores codex_features:

[tok]
provider = "claude_code_goal"
sandbox = "workspace-write"
write_dirs = ["src", "writing"]

Use codex_app_server when the Codex tok pass should go through codex app-server --stdio and a real app-server thread goal instead of codex exec:

[tok]
provider = "codex_app_server"
sandbox = "workspace-write"
write_dirs = ["src", "writing"]

Tok prompt template should say:

• what standard the artifact must meet;
• that the artifact is produced by {producer_command};
• that {tik_review_path} is the standard to meet;
• that tok must make source changes so the next rebuilt artifact answers the tik review's blocking objections;
• which source directories count as the audited source-change scope;
• which outputs, data, logs, and generated files are off limits.

Do not include language that asks a human to approve, clarify, or decide during the runtime loop.

Set run_cwd = "." when the tok pass may need to run project-level commands. Use runtime_write_dirs for build outputs, logs, and generated artifacts that commands may refresh. Do not put those generated directories in write_dirs.

6. Write gezhi.toml

Start from gezhi init when no config exists, or edit the existing gezhi.toml carefully.

Minimum shape:

name = "artifact-goal"
state_dir = ".gezhi"
runs_dir = ".gezhi/runs"

[artifact]
path = "output/artifact.pdf"
copy_as = "artifact.pdf"

[producer]
command = "scripts/goal_producer.sh"

[tik]
provider = "codex_file"
timeout_seconds = 1800
max_file_size_bytes = 25000000
max_output_tokens = 4096

[tik.verdict]
ready_field = "artifact_ready"
required_fields = ["artifact_ready"]

[tok]
provider = "codex_goal"
sandbox = "workspace-write"
write_dirs = ["src"]
run_cwd = "."
runtime_write_dirs = ["output", "build", "logs"]
codex_features = ["goals"]

[no_mistakes]
enabled = true
binary = "no-mistakes"
mode = "lightspeed"

[safety]
generated_dirs = ["output", "build", "dist"]
max_blocker_repeats = 3

Also include [tik.prompt] and [tok.prompt] sections. Use only placeholders documented in docs/config-schema.md, and keep runtime prompts closed-system: they may refer to the artifact, producer, tik ledger, source boundaries, and operational impossibilities, but not to asking a person for approval or clarification during the loop.

If the user explicitly wants unattended long-horizon work, add perpetual mode with a capability lease. Keep the substantive goal fixed, keep the lease narrow, and include only the source and generated artifact paths that the loop is allowed to mutate:

[perpetual]
enabled = true
substantive_goal = "Resolve the fixed substantive objections in the artifact."

[lease]
version = "artifact-lease-v1"
allow_shell = true
allow_network = false

[[lease.rules]]
effect = "allow"
operations = ["create", "modify", "delete", "rename"]
paths = ["src/**", "writing/**"]

[[lease.rules]]
effect = "allow"
operations = ["create", "modify"]
paths = ["output/artifact.pdf"]

7. Validate Before Running

Run these checks from the target project:

gezhi validate
gezhi doctor

If using Codex tok:

gezhi doctor --smoke-codex-goal

If using tok.provider = "codex_app_server":

gezhi doctor --smoke-codex-app-server

If using tik.provider = "codex_file":

gezhi doctor --smoke-codex-goal --smoke-codex-file-tik

If using tik.provider = "claude_code_file":

gezhi doctor --smoke-claude-code-file-tik

If using tik.provider = "oracle" or tik.provider = "checklist", the default doctor run checks the configured command.

If using tok.provider = "claude_code_goal":

gezhi doctor --smoke-claude-code-goal

Combine the smoke flags that match the configured providers; the all-Claude stack is --smoke-claude-code-goal --smoke-claude-code-file-tik.

Run the producer directly once and prove the artifact exists:

scripts/goal_producer.sh
test -s path/to/artifact

If the producer command is not a wrapper, run that exact configured command and then run test -s on [artifact].path.

Run a dry prompt render before the first real heartbeat:

gezhi run --dry-run

Only run a real heartbeat when setup checks pass:

gezhi run --max-minutes 600
gezhi state

For unattended progress, install the system-level heartbeat instead of leaving a foreground loop running. Omit --every-minutes unless the project needs a fixed timer; gezhi defaults to a 5-minute wake-up for perpetual goals and a 30-minute wake-up for legacy goals:

gezhi heartbeat install --max-minutes 600
gezhi heartbeat status

8. Recovery Rules

Use these rules when setup does not pass on the first attempt:

• gezhi validate fails: fix the config shape, placeholders, write scopes, or forbidden runtime prompt language before any other check.
• gezhi doctor fails on a missing command: install the missing tool only when that is clearly in scope; otherwise report the exact missing command.
• producer fails: repair the producer command or wrapper first; do not proceed to tik/tok.
• artifact missing or empty: fix the producer or artifact path; do not lower the standard.
• Provider smoke checks fail: report the exact smoke check failure and leave the next command as a setup repair command, not a heartbeat.
• no-mistakes missing: install it or report it; do not silently set [no_mistakes].enabled = false for a normal user setup.

Common Recipes

Research PDF

• Artifact: output/full_paper.pdf.
• Producer: make all or python3 scripts/orchestrator.py --full.
• Tik: codex_file or claude_code_file with a journal-review prompt, or deterministic PDF checks.
• Tok write dirs: writing, src, tables, figures if these are source.
• Generated dirs: output, build, cache.

Static Web App

• Artifact: dist/index.html plus any build manifest.
• Producer: npm run build.
• Tik: oracle smoke test if Playwright tests exist; otherwise codex_file or claude_code_file on a generated report file.
• Tok write dirs: src, app, components, pages, public only when source assets live there.
• Generated dirs: dist, build, .next, coverage.

Data Report

• Artifact: reports/final.html, reports/final.pdf, or reports/final.xlsx.
• Producer: project script that rebuilds report from committed inputs.
• Tik: deterministic schema and reconciliation checks where possible.
• Tok write dirs: analysis scripts and report source.
• Generated dirs: report outputs and caches.

Definition of Done

• The finished thing is named and exists after the producer runs.
• The producer is a stable command or wrapper checked into the project.
• gezhi.toml points at the producer and artifact.
• tok.write_dirs are narrow source directories and the runtime can audit source changes there.
• safety.generated_dirs protects build outputs.
• gezhi validate passes.
• gezhi doctor reports the configured static setup as ready or the remaining blocker is documented with exact output.
• Optional provider smoke checks pass when their providers are configured.
• The final response to the user names the artifact, producer command, verifier used, writable scopes, and exact next command. If unattended progress is appropriate, the next command should be gezhi heartbeat install ...; otherwise it should be one manual gezhi run ....
• If any required check failed, the final response starts with the blocker and gives the smallest next command to fix it.