discover

A first-step guide that identifies the project knowledge and specialist instructions relevant to a coding task.

In plain words
What is it for?
Use it before tasks involving sessions, operators, agents, integrations, the frontend, authentication, projects, the command-line interface, or specifications.
Why use it?
It helps an agent find the right domain rules before changing code or specifications, reducing work based on incomplete context.

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/ambient-code/platform/discover
Any agent
npx skills add ambient-code/platform --skill discover
Clone the repo
git clone --depth 1 https://github.com/ambient-code/platform

Made for: Claude Code, Codex.

Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 693 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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 $0.00064 $0.00693
Opus 5 $0.00032 $0.00347
Sonnet 5 $0.00013 $0.00139
Haiku 4.5 $0.00006 $0.00069

Measured 2d ago against content hash 4ea51c3a6f28, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

discover scanned grade B with 1 finding 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 2d 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.

Enumerates other installed skillsmediumAgent snooping

Other skills' SKILL.md files reveal prompts, capabilities and secrets that should be invisible to peers.

ls .claude/skills/ 2>/dev/null
skills/discover/SKILL.md · 105 lines

How it starts

The opening of the file, as written. The whole thing — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Discover Domain Skills

Before writing or changing anything, discover what skills and context are available for the domains you're about to work in.

When to Use

Every time. This skill is the entry point for all coding and spec work. Do not skip it, even for one-line fixes.

User Input

$ARGUMENTS

If provided, use the input to narrow which domains to check. Otherwise, infer from the task context.

Steps

1. Identify Relevant Domains

Map the work to one or more capability domains:

Domain When working on
sessions Session lifecycle, data model, API resources, messages, events
control-plane Operator, reconciliation, scheduling, runner provisioning
agents Agent model, runner, runtime registry, prompts
integrations MCP server, Gerrit, external services, feature flags
frontend UI components, pages, React Query hooks
auth OAuth, credentials, RBAC, tokens
projects Project management, settings, workspaces
cli TUI, acpctl commands
specs specs

If unsure, check which specs/ subdirectories exist:

ls -d specs/*/

2. Visit Each Domain

For every relevant domain, cd into its spec directory and list available skills:

cd specs/{domain}
ls .claude/skills/ 2>/dev/null
ls skills/ 2>/dev/null

Read the SKILL.md of any discovered skill that looks relevant to the task at hand.

3. Load Domain Specs

While in the domain directory, check for specs that describe the desired state of what you're about to change:

ls *.spec.md 2>/dev/null

Read the relevant spec before implementing — code reconciles against specs, not the other way around.

4. Check Deployment Skills

If the work involves deployment, manifests, Docker builds, or cluster operations, check for deployment skills:

ls skills/deployments/ 2>/dev/null

Read the relevant SKILL.md — these contain environment config, prerequisites, and troubleshooting for deploying each component.

Read the full file on GitHub · 105 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. 2d ago First seen · 105 lines · 64 tokens per session scan B 4ea51c3a6f28

Subscribe to this mod's changes

discover is a skill published in the GitHub repository ambient-code/platform (129 stars, last pushed 2d ago), licensed MIT. It adds 64 tokens to every session and 693 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (enumerates other installed skills). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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