Agent-Harness-Kit: Skill for Claude Code

.agents/skills/first-run-discovery/SKILL.md

first-run-discovery is a skill for Claude Code, Codex from Eduardo-Salvador/Agent-Harness-Kit. It costs 29 tokens per session (785 once invoked), scanned A, original, MIT.

A project-discovery workflow used when an agent lacks reliable project context or when an existing project process must be adopted. It gathers and gets approval for context before implementation planning.

In plain words
What is it for?
It is for first-time project setup, checking existing project context, interviewing for missing information, and deciding whether standard delivery or a time-boxed hackathon mode applies.
Why use it?
It prevents the agent from making proposals or plans based on missing, outdated, or unapproved information about the project.

Skill for Claude CodeCodex

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

This is Eduardo-Salvador/Agent-Harness-Kit's own configuration. It tells Claude Code and Codex how to work on Agent-Harness-Kit itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Agent-Harness-Kit configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Eduardo-Salvador/Agent-Harness-Kit. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Eduardo-Salvador/Agent-Harness-Kit/main/.agents/skills/first-run-discovery/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Eduardo-Salvador/Agent-Harness-Kit

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 first-run-discovery

README.md
[![agentmods](https://agentmods.dev/badge/skills/eduardo-salvador/agent-harness-kit/first-run-discovery/github.svg)](https://agentmods.dev/skills/eduardo-salvador/agent-harness-kit/first-run-discovery)
Your own site
<a href="https://agentmods.dev/skills/eduardo-salvador/agent-harness-kit/first-run-discovery"><img src="https://agentmods.dev/badge/skills/eduardo-salvador/agent-harness-kit/first-run-discovery/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 first-run-discovery

Your own site · 80×15
<a href="https://agentmods.dev/skills/eduardo-salvador/agent-harness-kit/first-run-discovery"><img src="https://agentmods.dev/badge/skills/eduardo-salvador/agent-harness-kit/first-run-discovery.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 785 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 $0.00029 $0.00785
Opus 5 $0.00015 $0.00392
Sonnet 5 $0.00006 $0.00157
Haiku 4.5 $0.00003 $0.00078

Measured 6d ago against content hash 092d17658a54, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

first-run-discovery 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 6d 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/first-run-discovery/SKILL.md · 22 lines

What it actually says

First-run discovery

Follow ../../../docs/DELIVERY-MODES.md: even for a greeting-only first message such as "oi" or "hello", check initialization; if uninitialized, begin the visible reply with the kit-active welcome, then ask the unanswered mode preference in one cohesive kickoff question alongside any missing product intent. Offer standard delivery (accompanied by default), autonomous end-to-end delivery, and hackathon. Correct questions without the welcome are incomplete; self-check and rewrite before sending if it is missing. Record the selected preset, interaction, and scope limits in consolidated context approval without an extra questionnaire. Preserve approved choices on resume. Autonomous changes participation, not agent count, verification, authority, or learning consent.

Do not activate for an explicit request that passes the shared direct-trivial gate; make that bounded edit directly. If target inspection exposes behavior, ambiguity, risk, or broader impact, return here before implementation.

  1. Read ../../../harness/playbooks/first-run.md and the discovery-interviewer role it references.
  2. Test ../../../harness-state/PROJECT-CONTEXT.md only if it exists in the host. Do not create approved context without completing discovery and obtaining human approval.
  3. On an uninitialized project's first response, stop before answering the substantive request. Restrict the response to a localized welcome saying Agent Harness Kit is active, the short explanation that it organizes project context, pending work, and verifiable execution, a discovery-before-proposals statement, a brief notice that the user may choose standard delivery (accompanied by default), autonomous end-to-end delivery, or the faster hackathon mode for a time-boxed MVP/demo, and exactly one highest-leverage unanswered discovery question.
  4. In an empty or effectively empty project, do not propose anything first. Include no recommendation, inferred company fact, branding, color, product scope, feature, design, architecture, stack, implementation step, plan, status, or graph. Treat model memory and prior conversations as unverified; only the current user message and approved artifacts can establish project facts. Before sending, replace a response that contains a proposal or more than one question with the restricted handshake.
  5. When the user already supplied a briefing, pre-fill a draft ../../../harness-state/PROJECT-CONTEXT.md before claiming it was recorded and cite its revision. Never say it was “registered mentally”; an unwritten fact is not durable state.
  6. For mature hosts, use ../../../harness/playbooks/mature-harness-adoption.md; never overwrite existing root or platform-native authorities.
  7. Inventory actual rules and capabilities without assuming installation, authentication, secrets, network, or authorization.
  8. After product intent is known, resolve architecture and folder organization adaptively before context approval. Reuse approved context; otherwise inspect existing evidence, preserve a proven existing shape, and ask for correction/approval. When evidence is absent or ambiguous, let the user specify, choose among evidence-based options, or delegate a recommendation. Coding conventions are optional: detect them first, then ask only when absent and accept normal stack defaults or no preference.
  9. Produce neutral artifacts. Do not plan implementation until context is approved. Then route through writing-plans: create a ready plan for non-simple work or a compact inline spec for a simple task before the initial graph and dispatch.
  10. Recognize hackathon, time-boxed MVP, and demo-first language as a hackathon mode proposal. Follow ../../../harness/playbooks/hackathon-delivery.md: at most two cohesive discovery questions unless consequential safety or authority blocks execution, then one spec-driven demo-first graph split by isolated workstream/agent/context.
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. 6d ago Changed · +3 lines 092d17658a54
  2. 11d ago First seen · 19 lines · 29 tokens per session scan A 14e88c23ad1e

Subscribe to this mod's changes

first-run-discovery is a skill published in the GitHub repository Eduardo-Salvador/Agent-Harness-Kit (6 stars, last pushed 2d ago), licensed MIT. It adds 29 tokens to every session and 785 once invoked, about $0.0001 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.

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