mcpbeat

Vibe Skill for Claude by pcx-wave

pcx-wave/vibe

> Delegate a coding task to Mistral Vibe and supervise the result via git diff. Also handles /vibe-report [--since N] [--project NAME] [--fails] — token/cost/failure report.

27k tokens
context cost
the whole folder, loaded on every use
18
files
ships runnable scripts
0
copies elsewhere
how many repositories repackaged it
115
stars on the repo
on the repository, not the skill itself

Install

one command, takes just this skill from the repository
npx skills add https://github.com/pcx-wave/vibe-skill --skill vibe

The instruction itself

25 sections, as written by the author

Vibe Orchestrator

/vibeon | /vibeoff | /vibestatus

Toggle auto-delegate mode — Vibe automatically handles coding tasks without requiring /vibe each time.

| Command | Action |

|---------|--------|

| /vibeon | touch ~/.local/share/vibe-auto.flag → confirm "Auto-vibe ON" |

| /vibeoff | rm -f ~/.local/share/vibe-auto.flag → confirm "Auto-vibe OFF" |

| /vibestatus | report auto-mode (ON/OFF) and active model override |

For /vibestatus, run both checks and print two lines:

Auto-vibe: ON | OFF
Model: <alias>  (override)  OR  Model: <default from ~/.vibe/config.toml>  (config default)

Auto-mode pre-filter (when flag is set)

When vibe-auto.flag exists, apply this gate before loading the full skill:

| Task signal | Action |

|---|---|

| 1 file, ≤10 lines, exact location already known | Edit directly — do NOT invoke the skill |

| Logic non-trivial, location unclear, multiple files, HTML/JS content, or >1 change | Invoke /vibe as normal |


/vibe-report

If the user invokes /vibe-report, run ~/tools/delegate-report with any flags

extracted from the arguments, display output verbatim, and stop.

| User says | Flag |

|-----------|------|

| "last 7 days", "7d" | --since 7 |

| "last 30 days", "30d" | --since 30 |

| "project foo" | --project foo |

| "only failures", "fails", "bugs" | --fails |

| "adapt", "adaptations", "by adaptation" | --adapt |

| "all delegates", "everything", "compare delegates" | --all |

| "delegate foo", "only opencode" | --delegate foo |

| (nothing) | (no flags — vibe runs only) |

The report defaults to vibe runs only. The log is shared across delegate

tools (vibe, opencode, gemini); use --all for the cross-delegate comparison

or --delegate NAME to scope to a different one.


/vibe-model-pick | /vibe-model-clear

Override the Vibe model for all subsequent delegations without touching ~/.vibe/config.toml.

| Command | Action |

|---------|--------|

| /vibe-model-pick <alias> | echo <alias> > ~/.local/share/vibe-model.flag → confirm |

| /vibe-model-clear | rm -f ~/.local/share/vibe-model.flag → confirm "back to config default" |

Aliases are machine-specific — read the actual list (and the default) from

[[model]] entries in ~/.vibe/config.toml before suggesting one; never assume

an alias from this table exists. Example snapshot from one machine:

| Alias | Model | Provider | Notes |

|-------|-------|----------|-------|

| deepseek-flash | deepseek-v4-flash | DeepSeek | Default — fast, cheap; solid for inline edits |

| mistral-medium-3.5 | mistral-vibe-cli-latest | Mistral | Stronger reasoning; reliable for inline edits |

| devstral-small | devstral-small-latest | Mistral | Agent-mode — read/explore only, weak at inline edits |

| local | devstral (llamacpp) | Local | Requires local server on :8080 |

Run the bash command, print one confirmation line showing the active model, and stop.


When the user invokes /vibe <instruction>, Claude delegates the implementation

to Mistral Vibe via its programmatic mode, supervises in real time, and reports.


Known Limits

Hard constraints — not config options. Full details in SKILL-reference.md.

  • UTF-8 / special chars → silent search_replace match failure. Use python3 str.replace() for accented chars or emoji.
  • Code duplication → Vibe may re-insert a block already written. Grep for duplicate definitions after every run.
  • HTML in prompt → tags like <div> are shell redirects (exit 127). Write HTML content to a temp file; reference the path in the prompt.
  • Source code in bash heredoc → quotes/backslashes mangle. Use search_replace directly; never a helper script that replaces code.
  • Orchestration chain → 6 failure points in order: CLI auth → pseudo-TTY → stream parser → TOML pricing → git diff → JSON log. When a run produces unexpected results, work down this list. Full details in SKILL-reference.md.

Step 1 — Detect workdir

  • git rev-parse --show-toplevel in the current directory.
  • If ambiguous or no git repo → ask with AskUserQuestion.

Step 2 — Decompose the task

Critical rule: keep tasks atomic and focused — one objective, one prompt.

| Size | Definition | Max turns | Approach |

|------|-----------|-----------|----------|

| Trivial | 1 file, change is obvious and located | — | Skip delegation — edit directly |

| Simple | 1 file, non-trivial logic or unknown location | 5–8 | 1 vibe call |

| Medium | 2–3 related files, 1 objective | 8–12 | 1 structured vibe call |

| Complex | >3 files OR business logic OR DB migrations | — | Break into sub-tasks |

Decomposition for complex tasks:

Sub-task 1: Explore / read relevant files (read-only, 5 turns)
Sub-task 2: Implement change A in file X (8 turns)
Sub-task 3: Implement change B in file Y (8 turns)
Sub-task 4: Verify / test (5 turns)

→ Check git diff between each sub-task before launching the next.


Step 3 — Write the Vibe prompt

The prompt must be self-contained.

Structure:

Stack: Python/Flask, SQLAlchemy, SQLite
Key files: app.py (routes + fetch), models.py (Entry)

TASK: [one single thing to do, stated as an imperative]

CONSTRAINTS:
- [what must not break]
- [expected format if relevant]

VERIFY: grep for "def function_name" in file.py and confirm it exists.

Formulation rules:

  • One task per prompt — never "also do X and Y"
  • Name the exact files to modify
  • Include a grep-based verification criterion (not a file re-read)
  • Language: English (better Mistral performance)

Prompt adaptations:

  • Any task that defines or calls a specific function: include the exact signature — def validate(data: dict) -> tuple[bool, list[str]]:.
  • No fixed signature, but conventions matter: point at the file to read first ("read app.py, follow its route/jsonify style") instead — don't do both, they're substitutes.
  • Write/modify tasks: append an output format block:
  OUTPUT FORMAT:
  Modified: <file>
  Does: <one line>
  No other prose.

> ⚠️ Shell safety: if the prompt contains UTF-8 accented chars, emojis,

> : in Python/YAML code, or typographic apostrophes — the vibe-delegate script

> passes them safely via a temp file (printf %q). Never interpolate such a prompt

> directly into a bash heredoc.

Verification — always use grep, not file re-read:

VERIFY: grep for "def extract_labels" in app.py and confirm it exists.

Step 4 — Launch Vibe

~/tools/vibe-delegate "<workdir>" "<prompt>" [max-turns] [agent] [timeout-secs]

| Argument | Default | Notes |

|----------------|----------|-------------------------------------------------|

| workdir | — | Absolute path, must exist |

| prompt | — | Self-contained task description |

| max-turns | 10 | Mistral turn limit — hard cap at 12, never more |

| agent | *(none)* | See agent table below |

| timeout-secs | 180 | Wall-clock kill timer |

| --require STR | *(none)* | Repeatable. Abort before launch if STR is absent in the workdir — pass the search_replace anchor here |

| --with-review N | *(none)* | After Vibe finishes, Claude reviews the diff and re-delegates fixes up to N times (see Step 8) |

| --verbose | *(off)* | Print per-token-type cost breakdown (input/output tokens × pricing) instead of the compact summary line |

| --no-ghostwrite | *(off)* | Disable the ghostwrite fallback — after 3 failed Vibe attempts, halt and ask instead of finishing (see Step 6) |

Available agents:

| Agent | Use |

|-------|-----|

| *(default → auto-approve)* | General implementation — all tools run without approval |

| code-reviewer | Review only, no changes |

| planner | Planning before implementing |

| code-architect | Architecture design, read-only |

Recommended max turns:

  • Read/explore: 5
  • Simple change (1 file): 8
  • Medium change (2–3 files): 12
  • Never exceed 12 — decompose instead

Background launch:

~/tools/vibe-delegate "<workdir>" "<prompt>" 10 > /tmp/vibe_out.txt 2>&1 &
# Monitor with: tail -f /tmp/vibe_out.txt

Step 5 — Supervise in real time

The script prints live:

=== VIBE START ===
Workdir : /path/to/project
Agent   : default
Turns   : 10
Timeout : 180s
Prompt  : Stack: Python/Flask. File: app.py ...
===================
  [read]  app.py
  [tool]  file: app.py
  [tool]  search_replace [OK] ...
  [vibe]  Done. Converted date to datetime.date in fetch_data().
Tool calls: 5
Delegate tokens (run): 4,800  (last turn: 4,600+200)  |  cost ~$0.0086
Claude Sonnet 4.6 eq: same tokens would cost ~$0.0168  (ratio x2.0)
=== VIBE DONE (exit: 0) ===
=== SYNTAX OK (1 check(s)) ===

=== UNCOMMITTED CHANGES ===
 app.py | 4 ++--
[log] → ~/.local/share/delegate-runs.jsonl  (4800 tokens, exit 0, 34.2s)

Vibe never commits. All changes are left unstaged — git checkout . reverts everything if needed.

Red flags to act on immediately:

| Flag | Meaning | Action |

|------|---------|--------|

| [WARN] | Vibe encountered an error | Read the error, fix manually |

| [tool] search_replace [FAIL] | UTF-8 match failure | Edit manually with Python str.replace() |

| exit: 1 or non-zero | Vibe failed / did not complete verification | Read diff, correct prompt |

| No [tool] file: lines | WROTE_NOTHING — Vibe read but wrote nothing | Revise prompt and retry; ghostwrite fallback after 3 attempts. Follow Step 6. |

| Mangled tool name in output (e.g. write_filecepte) | Vibe produced a garbled tool call — write never executed | Same as WROTE_NOTHING — treat as failed write. Follow Step 6. |

| === SYNTAX ERRORS === | Post-run syntax check failed | Fix before committing |

| Same file read 5+ times | Vibe is looping — run likely lost | Abort, check diff, try again |

Known bugs and workarounds:

| Bug | Cause | Fix |

|-----|-------|-----|

| Variable declared twice | Vibe doesn't check scope | Grep the variable before relaunching |

| Truncated prompt | Special chars in inline prompt | Script uses temp file — should be fixed |

| Wrote a Python helper just to replace code | Misdiagnosed search_replace limit | Use search_replace directly for ASCII code; write_file only if new content is too long for the prompt |

| Empty run — 0 files changed despite ≥3 tool calls | Multi-edit prompt: first search_replace target not found byte-for-byte | Split into sequential single-change runs; grep target string locally before delegating |

If exit non-zero: do not relaunch immediately. Read the diff, understand what was done, fix the prompt.


Step 6 — Iteration

  • Max 3 attempts per sub-task before escalating to the user.
  • Between attempts, read the git diff to avoid doubling partial work.

WROTE_NOTHING / failed write — auto-retry then ghostwrite (default)

When a run produces any of the following:

  • No [tool] file: lines (WROTE_NOTHING)
  • Mangled tool call output (e.g. write_filecepte, search_replacecepte)
  • Non-zero exit with 0 files changed

First, revise the prompt (simpler target, explicit file path, shorter scope) and re-run. This counts against the 3-attempt limit.

If all 3 attempts still produce WROTE_NOTHING or a failed write, the default is to finish the task, not halt. Claude writes the content itself (ghostwrite) — either delegating only the file-write step to Vibe or writing the file directly — then continues the chain. The task always completes; a stubborn Vibe never strands the run.

The Step 7 report must list ghostwritten files separately from Vibe-authored files — never silently mix them:

Files ghostwritten (Claude-authored after 3 failed Vibe attempts):
  - path/to/file.ext

--no-ghostwrite — opt out of the ghostwrite fallback

When the user passes --no-ghostwrite to /vibe, Claude must not ghostwrite. After 3 failed attempts, halt and ask instead:

⛔ Vibe wrote nothing after 3 attempts (--no-ghostwrite set).
  File expected : <path>
  Failure signal: <WROTE_NOTHING | mangled write | exit N, 0 files>
  Sub-task      : <description>

Options:
  (r) Revise prompt manually and retry
  (a) Abort

Do not proceed to subsequent sub-tasks until resolved.


Step 7 — Report to the user

✓ Vibe finished — <1-line summary>

Files modified:
  - path/to/file.ext (+X / -Y lines)

[If problem]:
⚠ <description> — completing manually / relaunching?

Ready to commit?

When --verbose was passed: after the file list, quote the full token/cost block verbatim from the script output — the lines starting with Model, Input, Output, Total, Claude. Do not paraphrase or summarize them. Example:

Model               : mistral-medium-3.5
  Input  :     45,120  @  $1.50/M  = $0.0677
  Output :      1,280  @  $7.50/M  = $0.0096
  Total  :     46,400              = $0.0773
  Claude :     46,400  (@ $3/$15/M)  = $0.1531  (x1.98 cheaper)

Step 8 — Review pass (--with-review N)

Triggered only when the user passes --with-review N to /vibe. Runs after Step 5 confirms exit 0.

8.1 — Read the diff

Run git diff (or git diff HEAD if changes are staged). Read the full output. This is Claude's review input — do not ask Vibe to review.

8.2 — Classify issues

Scan only for fundamental issues. Flag these:

| Category | Examples |

|----------|---------|

| Incorrect logic | off-by-one, wrong branch condition, inverted boolean |

| Crash-causing gap | unhandled None/null dereference, missing required field, index out of range |

| Broken contract | function signature changed without updating callers, return type mismatch |

| Wrong scope | change applied to wrong file/function/class |

| Security hole | unsanitized user input passed to shell/SQL/eval, credentials in plaintext |

Do NOT flag: style, naming, formatting, unused imports, performance, readability, or subjective preferences. If unsure whether an issue is fundamental, skip it.

8.3 — Re-delegate one issue per iteration

For each fundamental issue found (up to N):

  • Write one atomic Vibe prompt targeting that single issue (follow Step 3 rules).
  • Launch via vibe-delegate (same workdir, same model).
  • After Vibe finishes, re-read the diff and re-evaluate: did the issue get fixed?
  • Move to the next issue (or stop if N exhausted or no issues remain).

Never bundle two fixes into one prompt. One issue → one delegation → one diff check.

If N iterations are exhausted and issues remain, list them but do not attempt further fixes — report and stop.

8.4 — Tracking state across iterations

Maintain these counters locally (not persisted mid-run):

review_iterations_allowed  = N
review_iterations_used     = 0
review_issues_found        = <count from initial diff review>
review_issues_fixed        = 0
review_issues_remaining    = review_issues_found

Increment review_iterations_used and review_issues_fixed after each successful re-delegation. Update review_issues_remaining accordingly.

8.5 — Report

After all iterations or no issues remain, append to the Step 7 report:

Review pass (--with-review N):
  Issues found:     X
  Issues fixed:     Y
  Issues remaining: Z
  Iterations used:  A / N

If issues remain, list each one briefly (file:line — description). Do not re-attempt them.

8.6 — Log fields

After the review pass, the run log entry for the original Vibe run must include these additional fields in ~/.local/share/delegate-runs.jsonl:

"review_iterations_allowed": N,
"review_iterations_used": A,
"review_issues_found": X,
"review_issues_fixed": Y,
"review_issues_remaining": Z

When --with-review is not used, all five fields are omitted (do not write them as 0).


Orchestration rules

  • Decompose before delegating — one task, one prompt.
  • Streaming always — never --output text.
  • Check diff between sub-tasks — never launch the next one blind.
  • Ghostwrite only as a last resort — always delegate to Vibe first; never write code yourself before 3 failed attempts. After 3 failures the default is to ghostwrite and finish (declare it in the Step 7 report). --no-ghostwrite disables the fallback and halts instead. See Step 6.
  • Max 12 turns per call — decompose instead of extending.
  • Grep target before delegatinggrep -n "exact_target" file.py before any search_replace prompt. Pass that anchor as --require "exact_target" so the delegate aborts before launching if it's gone. Always use grep for VERIFY, not file re-read.
  • Match model to task — inline-edit tasks → deepseek-flash or mistral-medium-3.5; never route edits to agent-mode devstral-small (read/explore only).
  • UTF-8 / emoji in the prompt → the script handles it via temp file, but test with a short prompt first.
  • UTF-8 in OLD/NEW strings → mandate python3, no exceptions — before writing any Vibe prompt, scan every OLD and NEW string for accented chars (é è à ç ù ô î û ñ...) or emoji. If ANY are present, the prompt MUST explicitly instruct Vibe to use python3 -c with pathlib.Path.read_text/write_text(encoding='utf-8') for those changes — never search_replace. A search_replace [OK] on UTF-8 content is a silent no-op: the tool call is accepted but the string is never found. This is the #1 cause of phantom successful runs that changed nothing.
  • Check string delimiters before delegating JS/JSON changes — if a replacement value contains apostrophes (') and the target JS property uses single-quote delimiters, the NEW string must switch to double-quotes (") for that property. Scan OLD→NEW pairs for this conflict before writing the prompt; never leave it to Vibe to discover at runtime.
  • After any run that touches imports: grep the import line — always run grep "^from X import" file.py before the next sub-task.
  • search_replace [OK] ≠ correct change — always grep the specific changed line, not just check syntax.
  • Provide data structure context — if a route accesses a DB payload, include the exact field paths (payload['produit']['nom']) in the prompt.
  • Reuse existing assets — for UI tasks, tell Vibe to link existing CSS/JS files. "Use /static/style.css and CSS class bar-row" is always better than "generate a dark theme".

Run Log

Every run appends one JSON entry to ~/.local/share/delegate-runs.jsonl.

Log fields and jq queries → see SKILL-reference.md.

~/tools/delegate-report                  # vibe runs only (default)
~/tools/delegate-report --since 7        # last 7 days
~/tools/delegate-report --project myapp  # filter by project
~/tools/delegate-report --fails          # failures only
~/tools/delegate-report --adapt          # failure rates by prompt adaptation
~/tools/delegate-report --all            # all delegates (shared log)
~/tools/delegate-report --delegate opencode  # a specific delegate

Or via Claude Code: /vibe-report [args]. Log fields and jq queries → SKILL-reference.md.

Review pass fields — see §8.6 for log field definitions. Present only when --with-review N was used.


See Also

A sister delegate using Gemini CLI exists: gemini-skill.

Both write to the same delegate-runs.jsonl log, making runs comparable across delegates.

This skill is improved regularly — run update-skills to pull the latest version of this skill, as well as all your other skills!

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How to use it

Copy the folder

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