epic-harness AGENTS.md

epic-harness AGENTS.md is an instructions file for Codex, OpenCode from epicsagas/epic-harness. It costs 4,491 tokens per session, scanned A, original, Apache-2.0.

A set of instructions for epic-harness, a coding-agent system with automated workflows, quality checks, and a feedback loop that can improve the system over time.

In plain words
What is it for?
Running workflows from discovery through shipping, applying quality gates such as test-driven development (writing tests before implementation), threat modeling, vulnerability scanning, and triage.
Why use it?
It organizes software work into stages and adds checks for testing, debugging, security, verification, and release readiness.

Instructions file for CodexOpenCode

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 instructions/epicsagas/epic-harness/agents-md
Clone the repo
git clone --depth 1 https://github.com/epicsagas/epic-harness

Made for: Codex, OpenCode.

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 epic-harness AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/epicsagas/epic-harness/agents-md.svg)](https://agentmods.dev/instructions/epicsagas/epic-harness/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/epicsagas/epic-harness/agents-md"><img src="https://agentmods.dev/badge/instructions/epicsagas/epic-harness/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 4,491 This file is loaded in full into every session.
When invoked 4,491 The same file — it is already loaded in full.
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 $0.04491 $0.04491
Opus 5 $0.02246 $0.02246
Sonnet 5 $0.00898 $0.00898
Haiku 4.5 $0.00449 $0.00449

Measured today against content hash ca7612093217, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

epic-harness AGENTS.md 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 today.

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.md · 357 lines

How it starts

The opening of the file, as written. The whole thing — 357 lines — stays where its author put it; the contents beside it link to each section on GitHub.

epic-harness

25 skills (9 pipeline + 16 quality) + self-evolving agent harness.

Structure

  • skills/ — 25 skills + _dispatch router + _critic reviewer
  • registry/ — Seeding resources (embedded in Rust binary at compile time)
    • presets/ — Cold-start skill templates
    • rules/ — Seeded host rule files
    • scripts/install.js — Plugin bootstrap (SessionStart)
  • src/ — Rust crate; single binary (epic-harness)
    • src/hooks/ — Ring 0 automation (guard, polish, observe, resume, snapshot, reflect)
    • src/evolve/ — Ring 3 evolution loop
  • docs/ — User-facing documentation and assets
    • architecture.md, quickstart.md, demo/, references/, specs/
  • integrations/common/HARNESS.md embedded into the binary (include_str!), self-seeded to ~/.harness/HARNESS.md

Architecture: 4-Ring Model

  • Ring 0 (Autopilot): Hooks auto-maintain quality, restore sessions, learn
  • Ring 1 (Pipeline): 9 skills that orchestrate multi-step workflows (discover → spec → go → audit → eval → ship, orbit, evolve, team)
  • Ring 2 (Quality Gates): 17 skills that auto-trigger on context signals (tdd, debug, secure, threat-model, vuln-scan, triage, verify, etc.)
  • Ring 3 (Evolve): Observe → Analyze → Evolve → Gate → Reload self-improvement loop

/orbit — Autonomous Pipeline

Single-command spec-to-PR execution with three entry modes.

flowchart TD
    START["/orbit"] --> MODE{"requirement?"}
    MODE -->|"unclear"| WAIT["Interactive\nUser runs /discover → /spec"]
    MODE -->|"clear + complex"| COUNCIL["Council\n4-Voice Auto-spec"]
    MODE -->|"clear + simple"| DIRECT["Direct\nAuto-spec"]
    WAIT --> SPEC["Load Approved Spec"]
    COUNCIL --> SPEC
    DIRECT --> SPEC
    SPEC --> GO["Go Phase\nPlan → Execute → Integrate"]
    GO --> CHECK["Check Phase\nReview + Audit + Test"]
    CHECK -->|"PASS"| SHIP["Ship Phase\nIsolated Test → PR → CI"]
    CHECK -->|"WARN"| SHIP
    CHECK -->|"FAIL"| RETRY{"retry < 3?"}
    RETRY -->|Yes| FIX["Go Fix\nTarget fixes from action items"]
    FIX --> CHECK
    RETRY -->|No| PAUSE["Pause — User decides"]
    PAUSE -->|continue| FIX
    PAUSE -->|abort| ABORT["Abort"]
    SHIP --> EVOLVE["Evolve\nAuto-analyze session"]
    EVOLVE --> DONE["Orbit Complete\nConsolidated Report"]

Read the full file on GitHub · 357 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. today Changed · +15 lines · +238 tokens per session ca7612093217
  2. 5d ago First seen · 342 lines · 4,253 tokens per session scan A 5695275eeae3

Subscribe to this mod's changes

epic-harness AGENTS.md is an instructions file published in the GitHub repository epicsagas/epic-harness (17 stars, last pushed yesterday), licensed Apache-2.0. It adds 4,491 tokens to every session, about $0.0225 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.