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Validate a routine .md file's structure without calling the API.

Skill by hamzafer

IndexedMIT★ 10
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

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About

Validate a routine .md file's structure without calling the API. Checks frontmatter, cron schedule rules, model field, allowed_tools, sources, mcp_connections, and prompt body. Invoke when the user says "validate <file>", "lint <file>", or "validate" (no file = validate everything in the workspace).

Use cases: backend, agent-building

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Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
No tools found
Secrets
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Install scripts
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Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/validate

What's inside

Skill name
validate
Description
Validate a routine .md file's structure without calling the API. Checks frontmatter, cron schedule rules, model field, allowed_tools, sources, mcp_connections, and prompt body. Invoke when the user says "validate <file>", "lint <file>", or "validate" (no file = validate everything in the workspace).
License
MIT
Instructions
77 lines in SKILL.md · view on GitHub

Files (1)

  • SKILL.md

SKILL.md (first lines)

# claude-routines:validate

Lint a routine file before deploying. Never calls the API. Run this whenever you're about to `deploy`.

## Per-file checks

Run these in order. Stop the file at the first error; collect all warnings.

### 1. Frontmatter parses

Must be valid YAML between the opening and closing `---`. If parsing fails, report the YAML error and stop.

### 2. Required fields

- `name` (string, non-empty)
- `env_id` (string starting with `env_`)
- Exactly one of `cron` (string) or `run_once_at` (RFC3339 UTC timestamp). Both present is an error (`conflicting fields`). Neither present is an error (`missing trigger`).

### 3. Cron rules

When `cron` is set:

- Standard 5-field cron in UTC.
- Minimum interval is 1 hour. The minute field must be a single literal value (e.g. `0` or `30`). Reject patterns like `*/30 * * * *` or comma-lists like `0,30 * * * *` (under 1h gap).
- Hour field may use lists or ranges; that's fine since gaps are at least 1h.

### 4. run_once_at rules

Must be a future RFC3339 UTC timestamp like `2027-01-01T00:00:00Z`. Past timestamps are a warning (the API still accepts them; they fire immediately).

### 5. enabled

Must be a bool if present. Default `true`.

### 6. model

If set, must be one of: `claude-opus-4-7`, `claude-opus-4-7[1m]`, `claude-sonnet-4-6`, `claude-haiku-4-5`. Anything else is an error.

### 7. allowed_tools

Must be a list of strings. Warn if empty (inherits nothing). Warn loudly if it contains every default write-tool (`Bash`, `Write`, `Edit`, `NotebookEdit` all present): that's the silent-expansion default-set; suggest an explicit trim.

### 8. sources

If present, must be a list of objects with `url` (string starting `https://github.com/`) and optional `allow_unrestricted_git_push` (bool).

### 9. mcp_connections

If present, must be a list of objects with `connector_uuid` (lowercase v4 UUID), `name`, `url`, and optional `permitted_tools`.

### 10. Snippet includes (optional feature)

If the prompt body contains `{{include <path>}}` lines: the file at `<path>` must exist relative to the routine file's directory or the workspace root. Included files must NOT themselves contain `{{include}}` directives (no nesting).

### 11. Prompt body

Must be non-empty after stripping whitespace.

## Output format

```
OK   personal/morning-brain-digest.md
ERR  personal/oslo-apartment-hunter.md
  - error: cron "*/30 * * * *" violates minimum 1-hour interval
  - warning: allowed_tools includes Bash, Write, Edit, NotebookEdit (full default-set). Consider trimming.
```

When called without a file argument, validate every `.md` file under common routine locations (`routines/`, `personal/`, or anywhere with frontmatter). Skip READMEs. Print a one-line summary per file.

Final line: `N files OK | M files with errors | W warnings`.

## See also

- `dry-run deploy <file>` to preview the API payload after validation passes
- `deploy <file>` to actually ship

From hamzafer/claude-routines, MIT.

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Stars
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Forks
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Open issues
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Last commit (this folder)
May 14, 2026 (5 months ago)
Last release
Apr 27, 2026 (6 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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validate skill. Agent Mart. https://agentmart.dev/skills/hamzafer-validate (last updated 2026-10-24)