e2e-driven-iteration SKILL.md skillA
e2e-driven-iteration from corvinlabs/corvinos is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add corvinlabs/corvinos/e2e-driven-iteration@git:20260915.459047ePins git:20260915.459047e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- corvinlabs/corvinos
- Path
corvin_operator/bundle/skills/ldd/e2e-driven-iteration/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260915.459047e, committed Sep 15, 2026
- Size
- 7,099 bytes
- Repository stars
- 24
- License
- Apache-2.0
Use at the start of every inner-loop iteration where the goal is to fix a bug / close a failing test / reach a green E2E. Forbids editing code without first running the E2E to capture a fresh loss signal, and forbids declaring "done" without the E2E passing. Makes the cycle "E2E → loss → 5-why-by-layer → fix → E2E" the only admissible rhythm.
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
# E2E-Driven-Iteration ## Overview The existing dach-skill `loop-driven-engineering` says "run E2E when warranted." That's too soft. Under time pressure, "warranted" silently becomes "never" and the iteration degrades into blind-patching based on stale assumptions. **Core principle:** when you are in a fix-loop (trying to close a failing signal), **every iteration begins and ends with an E2E run of the failing case**. The E2E is the forward pass; its output is the loss; the delta between iterations is the gradient signal that tells you whether the last edit helped or regressed. No E2E at the start → no loss measurement → your edit is speculative. No E2E at the end → you don't know if you converged or just stopped. See [`../../docs/ldd/convergence.md`](../../docs/ldd/convergence.md) §5 for how this skill implements the loss trace across the test pyramid. ## When to Use Invoke at the start of **every inner-loop iteration** whose purpose is: - Fixing a failing test - Closing a rejected gate - Resolving a production incident - Debugging an unexpected behavior - Converging on any goal where "is it fixed yet?" is the question …
Read the whole file at its exact version.
How to install
mdr add corvinlabs/corvinos/e2e-driven-iteration@sha256:40455e7d544eb701The line at the top of this page pins the label git:20260915.459047e, 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_ebwhmttgpv334o3o)
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Versions
The registry has recorded 1 version of this file, committed on Sep 15, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7099 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
corvinlabs/corvinos · 24 stars · license Apache-2.0 · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ebwhmttgpv334o3o GET https://markdownregistry.com/api/v1/resolve?ref=corvinlabs/corvinos/e2e-driven-iteration GET https://markdownregistry.com/api/v1/blob/40455e7d544eb701e408bdb5b6780a0ad729c6b9c90ef778b54f51a2c81f556f
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.