progressive-delivery

progressive-delivery is a skill for Claude Code, Codex from d-o-hub/github-template-ai-agents. It costs 166 tokens per session (1,331 once invoked), scanned A, original, MIT.

A controlled process for fixing a live production failure and gradually releasing the fix. It uses reproduction, testing, adversarial review, shadowing, canary deployment, and rollback decisions; a canary is a limited release used to detect problems before wider rollout.

In plain words
What is it for?
Investigating production failures, creating regression tests, evaluating fixes, and safely promoting or rolling back risky changes.
Why use it?
It prevents an urgent fix from causing a second incident. Each stage must produce an explicit proceed or rollback decision based on evidence and service objectives.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

Good fit Investigating production failures, creating regression tests, evaluating fixes, and safely promoting or rolling back risky changes.

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Install with agentmods
npx agentmods add skills/d-o-hub/github-template-ai-agents/progressive-delivery
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add d-o-hub/github-template-ai-agents --skill progressive-delivery
Clone the repo
git clone --depth 1 https://github.com/d-o-hub/github-template-ai-agents

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for progressive-delivery

README.md
[![agentmods](https://agentmods.dev/badge/skills/d-o-hub/github-template-ai-agents/progressive-delivery/github.svg)](https://agentmods.dev/skills/d-o-hub/github-template-ai-agents/progressive-delivery)
Your own site
<a href="https://agentmods.dev/skills/d-o-hub/github-template-ai-agents/progressive-delivery"><img src="https://agentmods.dev/badge/skills/d-o-hub/github-template-ai-agents/progressive-delivery/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for progressive-delivery

Your own site · 80×15
<a href="https://agentmods.dev/skills/d-o-hub/github-template-ai-agents/progressive-delivery"><img src="https://agentmods.dev/badge/skills/d-o-hub/github-template-ai-agents/progressive-delivery.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 166 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,331 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00166 $0.01331
Opus 5.5 $0.00066 $0.00532
Sonnet 5.5 $0.00033 $0.00266
Haiku 4.5 $0.00017 $0.00133

Measured 24d ago against content hash c0574446bd4e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

progressive-delivery scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 24d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/progressive-delivery/SKILL.md · 121 lines

How it starts

The opening of the file, as written. The whole thing — 121 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Progressive Delivery

Production remediation as a gated loop. No stage is skipped; every gate has an explicit verdict (proceed / abort-and-roll-back) recorded before moving on.

When to Use

  • Production failure needs a fix that must itself be proven safe
  • Rolling out a risky change (migration, perf patch, security hardening)
  • Setting up shadow/canary/promote/rollback stages in any stack
  • Even if they just say "roll this out safely", "canary this", or "prove the fix"

The Loop

1. Failure — capture the signal

Record the failing symptom with evidence: alert text, dashboard link, log excerpt, failing check name. No fix work starts without a pinned symptom.

2. Reproduce — minimal, deterministic

Build the smallest reproducer (failing test, script, or eval case) that fails before the fix and passes after. Commit it with the fix so regressions recur as test failures, not incidents.

3. Candidate fix — smallest blast radius

Prefer the minimal change that resolves the reproducer. Note what it does NOT change. Keep migrations and behavior changes in separate commits.

4. Evaluate — static + functional gates

Run the repo gates (./scripts/quality_gate.sh, targeted tests, ./scripts/validate-skills.sh for skill changes). All must pass with zero warnings before rollout stages.

5. Adversarial evaluation — red-team the fix

Author at least one negative case (EVAL.md convention): inputs crafted to break the fix — reverted-fix checks, boundary values, permission-denied paths, prompt-injection shapes for agent-facing changes. The fix must fail closed. See OWASP GenAI LLM Top 10 2026 and MITRE ATLAS for attack shapes.

6. Shadow — mirrored traffic, zero user impact

Mirror production traffic to the candidate without serving from it (Istio mirror, Flagger mirror: true, Gateway API RequestMirror). Compare outputs and error rates against stable. Writes must be idempotent or shadowed read-only; never mirror non-idempotent writes without a sink.

Read the full file on GitHub · 121 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 24d ago Changed · +8 lines · +166 tokens per session c0574446bd4e
  2. 25d ago First seen · 113 lines · 0 tokens per session scan A 8230810c0161

Subscribe to this mod's changes

progressive-delivery is a skill published in the GitHub repository d-o-hub/github-template-ai-agents (2 stars, last pushed yesterday), licensed MIT. It adds 166 tokens to every session and 1,331 once invoked, about $0.0007 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-28.

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