eou-specify

eou-specify is a skill for Claude Code from xiaolai/eou-foundry. It costs 27 tokens per session (1,417 once invoked), scanned A, original, ISC.

A tool for turning an approved candidate into a formal EOU specification. An EOU is a governed description of a repeatable unit of work, and Foundry V2 is the classification and governance system it follows.

In plain words
What is it for?
Use it to create or repair EOU specification files from candidate YAML data, after checking the required schema and governance documents.
Why use it?
It ensures the candidate is checked against the project's required fields, rules, authorities, and lifecycle constraints before becoming a formal specification.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the eou-foundry plugin — 14 skills, 1 command shipped together

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/xiaolai/eou-foundry/eou-specify
Any agent
npx skills add xiaolai/eou-foundry --skill eou-specify
Clone the repo
git clone --depth 1 https://github.com/xiaolai/eou-foundry

Made for: Claude Code.

Or install eou-foundry, the plugin that ships this one along with the rest of its 14 skills, 1 command.

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 eou-specify

README.md
[![agentmods](https://agentmods.dev/badge/skills/xiaolai/eou-foundry/eou-specify.svg)](https://agentmods.dev/skills/xiaolai/eou-foundry/eou-specify)
Your own site
<a href="https://agentmods.dev/skills/xiaolai/eou-foundry/eou-specify"><img src="https://agentmods.dev/badge/skills/xiaolai/eou-foundry/eou-specify.svg" alt="Measured on agentmods" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,417 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 5.1 $0.00027 $0.01417
Opus 5 $0.00014 $0.00709
Sonnet 5 $0.00005 $0.00283
Haiku 4.5 $0.00003 $0.00142

Measured 5d ago against content hash 013b1dba7a02, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

eou-specify 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 5d 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.

codex/skills/eou-specify/SKILL.md · 129 lines

How it starts

The opening of the file, as written. The whole thing — 129 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Specify EOU

Convert or repair $candidate into a formal EOU spec.

Inputs

  • $candidate (required) — path to a candidate YAML file or YAML content describing the EOU to specify. Resolved in this order: direct file path → foundry/self-evolution/candidate-sets/*.yml (search the candidates list for an entry whose id matches) → foundry/eous/{id}.yml.

Required reading

  1. schemas/eou.schema.yml — required fields, types, and allowed values
  2. foundry/constitution.yml — governance invariants the spec must satisfy
  3. foundry/governance.yml — authority-level definitions and lifecycle rules

Stop conditions

Halt and request clarification before proceeding if:

  • $candidate does not resolve to a readable file or cannot be interpreted as candidate data.
  • The candidate data does not contain enough information to write a concrete purpose.statement and operating_hypothesis — do not invent these.
  • The schemas/eou.schema.yml file does not exist — cannot validate field completeness without it.

Procedure

Step 1: Determine mode

  • If $candidate resolves to a path with no existing spec file → CREATE mode: build a new spec from the candidate data.
  • If a spec file already exists at the resolved path → REPAIR mode: read the existing spec and fill in missing or invalid fields without changing fields that are already correct.

Step 2: Load source material

Read $candidate to extract: purpose, operational context, known failure modes, authority level, and blast radius.

Step 3: Map all required fields

Populate each group in order:

classification:
  function:          # generate | specify | validate | diagnose | promote | refactor | audit | propose | activate | implement | retire
  target_object:     # the artifact or decision this EOU acts on
  automation_mode:   # deterministic | LLM_assisted | hybrid | human_executed
  authority_level:   # suggest_only | draft_only | write_candidate | write_inactive | mutate_active | approve | publish
  risk_level:        # low | medium | high | critical
  lifecycle_stage:   # candidate | draft | simulated | pilot | active | monitored | stable | deprecated | retired

purpose:
  statement:         # one sentence — what this EOU does
  non_goals:         # explicit list of what it must not do

operating_hypothesis:  # "Given [inputs], this EOU can [action] without [boundary violation]."

inputs:
  required:          # files or data this EOU cannot run without
  optional:          # files that improve output quality if present
  forbidden_assumptions:  # things the EOU must not silently assume

context_manifest:
  source_of_truth:   # canonical files (registry, constitution, schemas)
  supporting:        # reference files (taxonomy, patterns, maturity model)
  forbidden:         # files this EOU must not read or mutate

execution:
  steps:             # ordered, concrete, bounded steps — no "perform bounded operation"
  decision_points:   # named branch conditions with explicit resolution criteria
  stop_conditions:   # observable states that stop execution before completion
  allowed_tools:     # explicit tool list
  prohibited_actions: # explicit prohibitions

outputs:
  primary:           # concrete file path(s) — no placeholder labels
  secondary:         # supplementary artifacts
  trace:             # always: foundry/runs/{eou_id}/{run_id}.yml

success_criteria:
  must_pass:         # binary, verifiable conditions
  should_pass:       # quality checks that are not hard blockers

validation:
  deterministic:     # machine-checkable: field presence, schema conformance, count limits
  judgment:          # audit-level checks that require human or LLM review
  red_team:          # adversarial scenarios to test boundary robustness

failure_modes:
  known:             # named failure patterns
  warning_signs:     # observable signals that a known failure is occurring
  repair_actions:    # concrete responses to each warning sign

escalation:
  require_human_when:   # observable conditions that mandate human review
  require_approval_for: # actions that cannot proceed without human approval

responsibility:
  executor:          # Claude | script | human (pick one primary; hybrid: name the split)
  reviewer:          # who reviews outputs
  approver:          # who approves lifecycle transitions
  cannot_delegate:   # non-delegable authorities

blast_radius:
  allowed_scope:     # directories or files this EOU may write to
  forbidden_scope:   # directories or files this EOU must never touch

versioning:
  supersedes:        # prior EOU IDs replaced by this spec
  changelog:         # list of version entries

Read the full file on GitHub · 129 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. 5d ago First seen · 129 lines · 27 tokens per session scan A 013b1dba7a02

Subscribe to this mod's changes

eou-specify is a skill published in the GitHub repository xiaolai/eou-foundry (10 stars, last pushed 12d ago), licensed ISC. It adds 27 tokens to every session and 1,417 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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