post-deploy-watch

post-deploy-watch is a skill for Claude Code from rpraharaj/forward-deployed-engineer. It costs 106 tokens per session (1,948 once invoked), scanned A, original, MIT.

A structured observation period after a software release. It defines checks, signals to monitor, how long to watch, and the conditions for rolling back.

In plain words
What is it for?
Use it after a non-routine release, during a staged rollout, or when a new change carries known remaining risk.
Why use it?
A successful build does not prove that a release works correctly in production, where problems may appear gradually.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the fde-operate plugin — 3 skills shipped together

Good fit Use it after a non-routine release, during a staged rollout, or when a new change carries known remaining risk.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rpraharaj/forward-deployed-engineer/post-deploy-watch
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 rpraharaj/forward-deployed-engineer --skill post-deploy-watch
Clone the repo
git clone --depth 1 https://github.com/rpraharaj/forward-deployed-engineer

Made for: Claude Code.

Or install fde-operate, the plugin that ships this one along with the rest of its 3 skills.

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 post-deploy-watch

README.md
[![agentmods](https://agentmods.dev/badge/skills/rpraharaj/forward-deployed-engineer/post-deploy-watch.svg)](https://agentmods.dev/skills/rpraharaj/forward-deployed-engineer/post-deploy-watch)
Your own site
<a href="https://agentmods.dev/skills/rpraharaj/forward-deployed-engineer/post-deploy-watch"><img src="https://agentmods.dev/badge/skills/rpraharaj/forward-deployed-engineer/post-deploy-watch.svg" alt="Measured on agentmods" height="20"></a>
Per session 106 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,948 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 $0.00106 $0.01948
Opus 5 $0.00053 $0.00974
Sonnet 5 $0.00021 $0.00390
Haiku 4.5 $0.00011 $0.00195

Measured 8d ago against content hash a97ea381dc2d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

post-deploy-watch 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 8d 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.

fde-operate/skills/post-deploy-watch/SKILL.md · 167 lines

How it starts

The opening of the file, as written. The whole thing — 167 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Post-deploy watch

The part after the pipeline goes green.

Why this exists

Deployment is treated as complete when the pipeline succeeds. That's the moment the change starts being tested by reality, not the moment it finishes.

Two specific failures follow from stopping there. The first: nobody watches, the change degrades something subtly, and it's found days later by a customer or a month-end report — by which point the connection to the deploy is lost and diagnosis starts from scratch. The second: someone does watch, sees nothing alarming, and declares it fine — which is a feeling, not a verification, and it's indistinguishable from not having watched.

This skill exists to close the loop that release-readiness opened. Every item accepted as residual risk was accepted on the understanding that it would be detectable. This is where that promise is kept.

When this applies

  • Immediately after any non-routine deploy
  • During a staged or percentage rollout
  • A change shipped with accepted residual risk
  • The first production run of anything new

When it doesn't

  • Routine low-risk deploys in a mature pipeline with good alerting
  • Something has already broken — that's incident-triage
  • Non-production environments

Prerequisites

  • Locate the workspace: FDE_WORKSPACE, else the charter Location, else .fde/, else ../<repo>-fde/
  • .fde/08-release-readiness.mdthe residual unknowns are your watch list
  • .fde/runbooks/deploy-*.md — rollback triggers and procedure
  • .fde/03b-nfrs.md — the targets you're watching against

Procedure

1. Derive the watch list from the residual unknowns

The connection that makes this skill work. release-readiness produced a list of things that were unverified but accepted because they were judged detectable. Each one is a watch item, and the watch is where "detectable" gets tested.

For each: what specifically would you see if the pessimistic case is true, and where would you see it?

Add the standard set: error rate, latency, throughput, and the specific business metric this change touches.

Read the full file on GitHub · 167 lines

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. 8d ago First seen · 167 lines · 106 tokens per session scan A a97ea381dc2d

Subscribe to this mod's changes

post-deploy-watch is a skill published in the GitHub repository rpraharaj/forward-deployed-engineer (6 stars, last pushed 21d ago), licensed MIT. It adds 106 tokens to every session and 1,948 once invoked, about $0.0005 per session on Opus 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 2026-08-31.