analog-sizing-loop SKILL.md skillA
analog-sizing-loop from vibeic/vibe-ic is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add vibeic/vibe-ic/analog-sizing-loop@git:20260613.86cacb4Pins git:20260613.86cacb4 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/analog-sizing-loop/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260613.86cacb4, committed Jun 13, 2026
- Size
- 10,282 bytes
- Repository stars
- 28
- License
- Apache-2.0
Closed-loop analog optimization — iterates sizing → netlist → SPICE corner sweep → spec check → re-size until all PVT corners pass. Use when the user says "optimize the analog block", "close the loop", "auto-size", or at Step A4 of the analog track.
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
# Analog Sizing Loop
Automates the iterative analog design loop that previously required 5-14 manual iterations (per PRACTICAL_NOTES.md). Orchestrates `analog-sizing` → `analog-netlist-gen` → `eda_spice_corner` in a closed loop with spec-driven convergence.
## When to use
- Step A4 of the analog track (after topology + initial sizing)
- When a single SPICE run shows failing corners and the user wants automated optimization
- After `/analog-sizing` provides an initial design point
## Inputs
1. `analog/<block>/spec.json` — performance targets with min/max limits
2. `analog/<block>/topology.md` — selected topology
3. `analog/<block>/sizing.md` — initial sizing from `analog-sizing`
4. PDK (gf180 or sky130)
## Loop workflow
```
Iteration 0:
analog-sizing → initial W/L + bias
analog-netlist-gen → SPICE deck
eda_spice_corner (TT only) → quick sanity check
If TT fails → re-size immediately (don't waste time on corners)
Iteration 1-N (max 5):
eda_spice_corner (all corners: TT/SS/FF × -40/25/125°C)
yield-vs-spec + worst-corner → enforced by programs/corner_yield_vs_spec_check.py
If all PASS → done
If FAIL:
…Read the whole file at its exact version.
How to install
mdr add vibeic/vibe-ic/analog-sizing-loop@sha256:03d2331427f7d78aThe line at the top of this page pins the label git:20260613.86cacb4, 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.
[](https://markdownregistry.com/a/art_tibwoes7p54sinb5)
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Versions
The registry has recorded 1 version of this file, committed on Jun 13, 2026.
Audit of the latest version
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- pass: Frontmatter declares a description
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- 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
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- pass: No script tag
Source
vibeic/vibe-ic · 28 stars · license Apache-2.0 · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_tibwoes7p54sinb5 GET https://markdownregistry.com/api/v1/resolve?ref=vibeic/vibe-ic/analog-sizing-loop GET https://markdownregistry.com/api/v1/blob/03d2331427f7d78aaf7f5faab5e763b41e94e4b45076fe6ad9f2414fe3ae2b84
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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.