local-agent

A set of instructions for building and installing Happy Agent from a local copy of its source code, or switching back to the latest released version.

In plain words
What is it for?
It is for linking a checkout globally, installing or selecting the local version, reloading it, recovering a stuck process, or returning to a released version.
Why use it?
It removes the manual steps and timing issues involved in testing a local Agent build and reloading the running application.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/slopus/happy-agent/local-agent
Any agent
npx skills add slopus/happy-agent --skill local-agent
Clone the repo
git clone --depth 1 https://github.com/slopus/happy-agent

Made for: Claude Code, Codex.

Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 250 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00048 $0.00250
Opus 5 $0.00024 $0.00125
Sonnet 5 $0.00010 $0.00050
Haiku 4.5 $0.00005 $0.00025

Measured yesterday against content hash bd16bc118fdc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

local-agent 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 yesterday.

The scan reads SKILL.md. This mod also ships 1 executable file (reload.mjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

.agent/skills/local-agent/SKILL.md · 29 lines

What it actually says

Local Happy Agent

Run checks before installation, then from the repository root run:

pnpm link:global

This builds the checkout, globally links Happy Terminal, installs and selects Agent version 0.0.0, and schedules a detached reload. The detached worker waits five seconds, allows graceful draining for 30 seconds, then falls back to kill followed by start.

Make pnpm link:global the turn's final tool call and return immediately after it. Do not poll the reload from the agent being reloaded. The worker logs to ~/.happy/agent/local-reload.log.

To bypass graceful drain when recovering a stuck daemon, run this as the final tool call:

node .agent/skills/local-agent/reload.mjs --hard

To switch back, use Happy Desktop's Agent version picker to download or select the latest release. No unlink script is needed.

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. yesterday First seen · 29 lines · 48 tokens per session scan A bd16bc118fdc

Subscribe to this mod's changes

local-agent is a skill published in the GitHub repository slopus/happy-agent (22 stars, last pushed 3d ago), licensed MIT. It adds 48 tokens to every session and 250 once invoked, about $0.0002 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 2026-08-30.

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