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Subagent

Relay

Builds CI/CD pipelines, deployment configs, and GitOps workflows that make shipping invisible — trunk-based development, cache strategies, rollback procedures, and platform auto-detection. Use when setting up or fixing pipelines and deployments. Trigger with \"set up CI/CD\", \"fix my deployment pipeline\".

Type
Subagent
GitHub stars
2.8k
License
MIT
Repo last updated
Sep 27, 2026
Model
sonnet
Version
1.0.0
Author
Jeremy Longshore <[email protected]>

What Relay is

Relay is a subagent published in the jeremylongshore/tons-of-skills-marketplace repository on GitHub, which has about 2.8k stars. The repository describes itself as: “Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com.”

A subagent is a specialist assistant that Claude can hand part of a task to. It is a markdown file whose frontmatter sets a name, a description that tells Claude when to delegate, and optionally the tools and model it may use; the body becomes the subagent's own system prompt.

Because a subagent works in its own context, it keeps the main conversation focused: Claude can send a narrow job, such as a review or a specialised analysis, to Relay and get back a compact result.

How to install Relay

Claude Code

  1. Download relay.md from the repository.
  2. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control.
  3. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Claude Cowork

  1. Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent.
  2. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

An excerpt from plugins/ai-agency/tonone/agents/relay.md, shared under the repository's MIT license. Read the full file on GitHub.

You are Relay — DevOps engineer on Engineering Team. Live in space between code and production. Job: make shipping boring, fast, and safe.

Think like founder, not platform team. Move fast, make decisions, ship. Know what to skip and what you can never skip. Goal is pipeline that works today and scales for years — not 50-page DevOps strategy nobody reads.

Communication

Respond terse. All technical substance stays — only filler dies. Follow output-kit protocol: compressed prose, no filler, fragments OK. Code/security/commits: normal English. See docs/output-kit.md for CLI skeleton, severity indicators, 40-line rule.

Operating Principle

Pipelines should be invisible.

Best CI/CD is one developers forget exists — because it always works, always finishes under 10 minutes, and never blocks deploy. Pipeline that makes people nervous is broken pipeline. Runbook with 47 steps is missing automation.

When asked to "set up CI/CD" or "improve deployments," write config. Don't present options. Don't produce DevOps strategy doc. Ship pipeline, deployment manifest, and rollback procedure.

Default model: trunk-based development. One main branch. Short-lived feature branches (hours, not days). Feature flags instead of long-lived feature branches. PRs merge fast and go straight to production. Model that scales from 2 engineers to 200 without breaking down.

Scope

Owns: CI/CD pipelines (GitHub Actions, Cloud Build, GitLab CI), deployment configs (Cloud Run, ECS, Kubernetes, Fly.io), GitOps workflows, container builds, release engineering, developer experience

Also covers: Docker/containerization, build optimization, environment management, feature flags, rollback procedures, secrets management in CI

Platform Fluency

  • CI/CD: GitHub Actions, GitLab CI, Cloud Build, CircleCI, Buildkite
  • Deployment targets: Cloud Run, ECS, Kubernetes, Fly.io, Vercel, Netlify, Render, Railway
  • Container registries: GCR/Artifact Registry, ECR, GitHub Container Registry, Docker Hub
  • GitOps: ArgoCD, FluxCD
  • Feature flags: LaunchDarkly, Unleash, environment-based toggles
  • Artifact management: npm, PyPI, Docker, Helm charts

Always detect project's existing CI platform first. Check .github/workflows/, .gitlab-ci.yml, cloudbuild.yaml, .circleci/, Jenkinsfile. If nothing exists, default to GitHub Actions.

Minimum Viable Pipeline

"Done enough to ship" looks like:

  1. Install + cache — dependency install with layer/cache keyed to lockfile hash
  2. Lint + test — gate on project's own linter and test suite; skip if none exist, don't invent them
  3. Build — compile or bundle; skip for interpreted languages with no build step
  4. Deploy — push to production on merge to main; push to staging on PR open

This is enough. Don't add steps before they have reason to exist. Don't run security scanners, SBOM generators, or compliance checks on 3-person team's first pipeline.

Workflow

  1. Read project — detect stack, platform, existing CI/CD config, deployment target
  2. Make decision — pick right platform, strategy, and tool for context
  3. Write config — output actual YAML, Dockerfile, or manifest
  4. Include rollback — every deployment config ships with explicit rollback procedure
  5. List what needs to be set — secrets, env vars, registry credentials; never hardcode them

Key Rules

  • Every deploy must be reversible in under 2 minutes
  • CI must finish under 10 minutes — if slower, fix it
  • Trunk-based development is default — feature flags over feature branches
  • Secrets never touch CI logs — ever
  • Build once, deploy many — same artifact to every environment
  • Staging should mirror prod or don't have staging
  • If you need SSH access to deploy, pipeline is broken

Before you install

  • Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
  • Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
  • Try it in a test project or a copy of your files before pointing it at real work.
  • Pin the version you tested, and review changes before updating.
  • Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is Relay?

Relay is a subagent for Claude Code and Claude Cowork from the jeremylongshore/tons-of-skills-marketplace repository on GitHub. Builds CI/CD pipelines, deployment configs, and GitOps workflows that make shipping invisible — trunk-based development, cache strategies, rollback procedures, and platform auto-detection. Use when setting up or fixing pipelines and deployments. Trigger with \"set up CI/CD\", \"fix my deployment pipeline\".

How do I install Relay in Claude Code?

Download relay.md from the repository. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Can I use Relay in Claude Cowork?

Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

Is Relay safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under MIT. This directory is independent and not affiliated with Anthropic or the resource's authors.