ppa-diagnose SKILL.md skillA

ppa-diagnose from vibeic/vibe-ic is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add vibeic/vibe-ic/ppa-diagnose@git:20261106.a0a79f8

Pins git:20261106.a0a79f8 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
vibeic/vibe-ic
Path
vibe-ic-marketplace/plugins/vibe-ic/skills/ppa-diagnose/SKILL.md
Versions recorded
4
Latest version
git:20261106.a0a79f8, committed Nov 6, 2026
First version recorded
Aug 21, 2026
Size
2,148 bytes
Repository stars
32
License
Apache-2.0

Explain why a PPA number is where it is — which paths, cells, nets or flow decisions account for a timing, power or area result — starting from what the deterministic diagnosis already found and adding only falsifiable hypotheses on top. Use when the user says "why is timing failing", "where is the area going", "what is burning the power", "diagnose this PPA result", or when a closure loop needs a reason before it needs a candidate.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Diagnose PPA

Read the selected rows in `<project>/reports/flow_engine.json` and open their
native `reports`. `flow/steps.json` names each current tool and
`flow/native_limits.json` retains its original limits. Review `tool_ran`,
`native_steps`, `native_metrics`, and each metric's value, operator and limit.
A missing native measurement is `NOT_MEASURED`. AI reviews the engineering
meaning of every result and fixes problems in the design, tool or plugin.

```bash
python3 programs/flow_engine.py report --project <project>
```

Start with the measured failing metric and the original requirement. Read the
native path, cell, net, power or congestion breakdown that accounts for it.

1. For timing, separate cell delay, interconnect, logic depth, fanout and skew.
   Check constraints and I/O loading before proposing an RTL change.
2. For area, identify the dominant cells, memories, macros and unused reserve.
   Keep intentional ECO spare area separate from removable logic.
3. For power, identify activity, capacitance, voltage, leakage and the dominant
   switching structures. State any missing activity or model coverage.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add vibeic/vibe-ic/ppa-diagnose@sha256:3245af10d0090d19

The line at the top of this page pins the label git:20261106.a0a79f8, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_gbwhtxl6inybdcyn.svg)](https://markdownregistry.com/a/art_gbwhtxl6inybdcyn)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 4 versions of this file, between Aug 21, 2026 and Nov 6, 2026, about one every 26 days.

versioncommittedcommitsizeaudit
git:20261106.a0a79f8 latest2026-11-06 a0a79f8 2,148 BA view · diff
git:20261105.13b7a3f2026-11-05 13b7a3f 9,780 BA view · diff
git:20260825.99268282026-08-25 9926828 10,253 BA view · diff
git:20260821.26186542026-08-21 2618654 6,328 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (2148 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

vibeic/vibe-ic · 32 stars · license Apache-2.0 · pushed 2026-11-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_gbwhtxl6inybdcyn
GET https://markdownregistry.com/api/v1/resolve?ref=vibeic/vibe-ic/ppa-diagnose
GET https://markdownregistry.com/api/v1/blob/3245af10d0090d196af5b1b6e14fe34b8891b5f0fd7269fe69a229846d578990

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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