- name
- gardener-tasks
- description
- How to write, change and check Gardener tasks (.gardener/tasks/*/TASK.md), the AI maintenance tasks this repository runs from GitHub Actions. Use before creating or editing anything under .gardener/.
<!-- Written by Gardener 0.1.15. `gardener generate` rewrites this file; do not edit it. -->
# Gardener tasks
Gardener runs AI maintenance tasks on this repository from GitHub Actions. Each task is one
Markdown file: YAML frontmatter says when it runs, what the model may read, and exactly which
changes it may make; the body is the model's instructions. A planning job runs the model with only
the declared **tools** and lets it propose only the declared **effects**. A separate job then applies
those proposals. Nothing outside the declaration is possible, whatever the instructions say.
## Files
```
.gardener/
gardener.json project settings (release pin, optional "handle"); edit only "handle"
gardener.lock.json generated; never edit
SKILL.md this file; generated
tasks/<dir>/TASK.md one task per directory; the only files you write
.github/workflows/
gardener-<id>.yml generated, one per task; never edit
gardener-sync.yml generated (or the "syncWorkflow" name in gardener.json); never edit
```
## Workflow
1. Create `.gardener/tasks/<dir>/TASK.md`. Start from the template below or an existing task.
2. Run `npx @scuffi/gardener@0.1.15 generate` from the repository root (or the repository's own
`package.json` script, if it has one). Use this exact version: a different one produces files the
pull request's **Check tasks** check rejects.
3. Fix every error `generate` prints and read its warnings. Repeat until it succeeds.
4. Commit the `TASK.md`, `.gardener/gardener.lock.json` and the `.github/workflows/gardener-*.yml`
changes together. When they reach the default branch, the sync workflow enables the task.
To change a task, edit its `TASK.md` and run `generate` again. To remove one, delete its
directory and run `generate`. Never hand-edit generated files.
## Template
```markdown
---
schema: gardener.task/v1
id: bug-intake
name: Bug intake
description: Asks issue authors for missing reproduction details.
trigger:
event: github.issue.opened
labels-all: [bug]
tools:
- repository.list_files
- repository.read_file
effects:
- issue.comment.create
network:
default: deny
allow: []
deny: []
limits:
runtime-seconds: 300
max-turns: 12
max-tool-calls: 16
input-tokens: 60000
output-tokens: 16000
---
Read the issue and the code it mentions. If it is missing reproduction steps, expected behaviour or
a version, propose one `issue.comment.create` asking for exactly what is missing. Otherwise
propose nothing. Then finish.
```
## Frontmatter
Unknown keys are errors.
| Key | Required | Meaning |
| --- | --- | --- |
| `schema` | yes | Always `gardener.task/v1`. |
| `id` | yes | Stable identity: lowercase letters, digits, `.`, `_`, `-`. Names the workflow `gardener-<id>.yml`. Unique per repository. |
| `name` | yes | Short human name (up to 100 characters). |
| `description` | yes | One or two sentences (up to 1,000 characters). |
| `trigger` / `triggers` | exactly one | A single trigger object, or a list of them. See [Triggers](#triggers). |
| `tools` | yes | What the model may read or run. At least one. See [Tools](#tools). |
| `effects` | no | What the task may change. Omit or `[]` for a read-only task. See [Effects](#effects). |
| `network` | yes | Must be exactly as in [Network](#network). |
| `limits` | yes | Run budget. See [Limits](#limits). |
| `model` | no | Model ID. Defaults to `"@cf/zai-org/glm-5.3"`. Quote IDs starting with `@`. |
| `draft` | no | `true` makes the task run only by hand. See [Trying a task](#trying-a-task). |
| `checkout` | no | `pull-request-head` checks out a pull request's head instead of GitHub's merge preview, also for comments on a pull request and manual runs naming one. Needs a pull request or issue comment trigger. Implied by `commit.merge_base`, and when `commit.create` may write beyond `gardener/**`. |
| `reactions` | no | `false` stops the 👀 reaction while the task works on an issue or comment, and the 🚀 or 😕 it leaves after. On by default. |
## Triggers
Each trigger is `event:` plus optional filters. A task may use each event at most once.
| Event | Filters |
| --- | --- |
| `github.issue.opened`, `github.issue.edited` | `labels-all`, `mentions`, `authors` |
| `github.issue.labeled`, `.unlabeled`, `.reopened` | `labels-all`, `opened-by` |
| `github.issue_comment.created`, `.edited` | `labels-all`, `mentions`, `authors`, `opened-by` |
| `github.pull_request.opened`, `.edited` | `labels-all`, `mentions`, `authors` |
| `github.pull_request.reopened`, `.synchronize`, `.ready_for_review`, `.converted_to_draft`, `.labeled`, `.unlabeled` | `labels-all`, `opened-by` |
| `github.pull_request_review.submitted` | `labels-all`, `mentions`, `authors`, `opened-by` |
| `github.pull_request_review_comment.created`, `.edited` | `labels-all`, `mentions`, `authors`, `opened-by` |
| `github.discussion.created`, `.edited` | `labels-all`, `mentions`, `authors` |
| `github.discussion.answered`, `.unanswered`, `.labeled`, `.unlabeled` | `labels-all`, `opened-by` |
| `github.discussion_comment.created`, `.edited` | `labels-all`, `mentions`, `authors`, `opened-by` |
| `github.push` | `branches` (required), e.g. `[main, 'release/*']` |
| `github.schedule` | `cron` (required), five fields, e.g. `0 3 * * 1` |
| `github.workflow_dispatch` | none |
- `labels-all`: the issue, pull request or discussion must carry **all** of these labels.
- `mentions`: the text must @mention one of these handles. `self` means the `handle` in
`.gardener/gardener.json`, and `generate` fails if no handle is set.
- `authors`: who wrote the triggering text: `maintainers` (owner, members, collaborators, anyone
with write access), `any`, or a list of logins that may include `maintainers`, such as
`[maintainers, "devin-ai-integration[bot]"]`. It defaults to `maintainers` on comment and
review triggers and on any trigger with `mentions`, and to `any` elsewhere. Only set `any` with
`mentions` if the task is safe for anyone on the internet to start.
- `opened-by`: exact logins of who opened the issue, pull request or discussion, such as
`["dependabot[bot]"]`, or `["github-actions[bot]"]` for pull requests Gardener opened.
- Quote `[bot]` logins inside a bracketed YAML list.
- Using a filter an event does not support is an error. Every task can also be run by hand; that
trigger is added automatically. Pull requests from forks never run.
## Tools
| Tool | Gives the model |
| --- | --- |
| `repository.list_files` | List files in the checkout. |
| `repository.read_file` | Read files in the checkout. |
| `provider.api.read` | Read-only GitHub API: REST `GET`/`HEAD` and GraphQL queries (labels, other issues, pull request diffs, check runs, ...). |
| `repository.exec` | Run shell commands in the checkout (edit files, run tests). Unrestricted network access: do not add it unless the user explicitly asks, and say so. |
| `repository.merge_base` | Write the merge of the pull request's base branch into the checkout, conflicts marked, for `commit.merge_base`. See [Updating open pull requests](#updating-open-pull-requests). |
The event that triggered the run (issue, pull request, comment, ...) is always given to the model.
Declare only the tools the instructions need.
## Effects
`effects` is the complete list of changes the task may make, and they are applied automatically
with no human approval. Declare the narrowest exact kinds the instructions need. If the
instructions ask for an effect that isn't declared, it can't happen.
| Family | Kinds |
| --- | --- |
| Issues | `issue.comment.create`, `issue.comment.update`, `issue.label.add`, `issue.label.remove`, `issue.assignee.add`, `issue.assignee.remove`, `issue.close`, `issue.reopen`, `issue.create` |
| Pull requests | `pull_request.comment.create`, `pull_request.comment.update`, `pull_request.review.submit`, `pull_request.reviewer.request`, `pull_request.reviewer.remove`, `pull_request.update`, `pull_request.label.add`, `pull_request.label.remove`, `pull_request.update_branch`, `pull_request.review_comment.reply`, `pull_request.review_thread.resolve`, `pull_request.open`, `pull_request.open_draft`, `pull_request.merge` |
| Git | `branch.create`, `commit.create`, `commit.merge_base` |
| Discussions | `discussion.comment.create`, `discussion.comment.update`, `discussion.answer.mark`, `discussion.answer.unmark`, `discussion.close`, `discussion.reopen` |
| Checks | `check.rerun` |
| Releases | `release.create`, `release.update`, `release.publish`, `release.delete` |
- Family globs (`issue.*`, `pull_request.*`, `git.*`, `discussion.*`, `check.*`, `release.*`) grant
every kind in the family, including `pull_request.merge` and `release.delete`. Prefer exact kinds.
`git.*` includes `commit.merge_base` only for tasks that declare the `repository.merge_base` tool.
- Labels must already exist in the repository; the model can't create them. Tell it to pick only
from existing labels (with `provider.api.read` it can list them).
- `pull_request.open` / `open_draft` with `labels` also needs `pull_request.label.add`.
- `pull_request.review_comment.reply` (a reply in a review thread, by any comment id in it) and
`pull_request.review_thread.resolve` (by the thread's GraphQL node id) act only on the pull
request that triggered the run. Resolve only threads the task's own commit fixed.
- **Code changes** need `repository.exec` (to edit files), `branch.create`, `commit.create` and
`pull_request.open_draft` (or `.open`). The commit is made from files changed in the checkout,
on a branch created from the checked-out commit. Changes under `.github/workflows/`,
`.github/actions/`, `.gardener/`, `.git/`, `CODEOWNERS` and `.github/dependabot.yml` are refused.
- Branch-writing kinds (`branch.create`, `commit.create`, `commit.merge_base`, `pull_request.open`,
`pull_request.open_draft`) may only use `gardener/**` branches. To allow others, write the kind as
an entry. The list replaces the default, and patterns never match the default branch unless it is
named exactly:
```yaml
effects:
- kind: commit.create
branches: ["gardener/**", "docs/*"]
```
- Opening pull requests also needs **Settings → Actions → General → Allow GitHub Actions to create
and approve pull requests** turned on in the repository.
- The model plans every step before any runs. A later step can use an earlier step's output (for
example a new pull request's URL in a comment); the model is told how.
## Updating open pull requests
A task can bring a pull request's base branch into it with a merge commit, for example when a
maintainer comments "@handle fix the conflicts" on the pull request.
- Trigger on `github.issue_comment.created` (with `mentions` and the default `authors:
maintainers`). The run then checks out the pull request's head; forks and closed pull requests
plan on the default branch instead.
- Declare the `repository.merge_base` tool, `repository.exec`, and `commit.merge_base` with the
pull request branches it may push to (`branches:`, as above; never the default branch).
- In the body: call `repository.merge_base`; edit only the conflicted files it lists to resolve
them; run the repository's checks; then propose one `commit.merge_base` with the values the tool
returned. Never run `git merge`, `rebase`, `commit` or `push`: a moved head or a changed index
fails the run. If the conflicts can't be resolved, explain why in a comment instead.
- `commit.merge_base` acts only on the pull request that triggered the run and never rewrites
history. Protected paths may change only to exactly what the base branch has.
- Pushes made with the workflow token don't start other workflows, so the pull request's checks
don't run on the merge commit until someone pushes again or re-runs them.
## Network
Must be one of these, exactly. Host lists must be empty.
```yaml
network: # tasks without repository.exec
default: deny
allow: []
deny: []
```
```yaml
network: # tasks with repository.exec
default: allow
allow: []
deny: []
```
## Limits
| Key | Meaning | Allowed |
| --- | --- | --- |
| `runtime-seconds` | Wall-clock limit for the run. | 30–21,000 |
| `max-turns` | Model responses. | at least 3 |
| `max-tool-calls` | Tool calls (each file read, API call or command counts, plus the final `finish_task`, so the task's own work gets one fewer). | at least 3 |
| `input-tokens` | Largest single model request. The whole conversation is resent each turn. | any positive |
| `output-tokens` | Total generated across the run, including reasoning. | at least 16 × `max-turns` |
| `max-effect-operations` | Optional cap on proposed changes per run. Needs at least one effect. | 1–1,000 |
| `max-effect-bytes` | Optional cap on the plan's size. | 1,024–50,000,000 |
A run that runs out of any budget fails with `budget-exceeded` and changes nothing. What
Gardener's starter tasks use:
| Task | runtime-seconds | max-turns | max-tool-calls | input-tokens | output-tokens |
| --- | --- | --- | --- | --- | --- |
| Triage a new issue (comment and labels) | 300 | 12 | 16 | 80000 | 16000 |
| Reply to a mention | 480 | 12 | 16 | 128000 | 16000 |
| Review a pull request | 480 | 16 | 24 | 128000 | 16000 |
The default model reasons before it answers, which spends `output-tokens`; below about 16000 a run
can be cut off before its first tool call. Each file read, API call, edit or test run is at least
one turn and one tool call, so a task that changes and tests code needs several times these
budgets.
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