ateles: Skill for Claude Code

.claude/skills/run-feature-workflow/SKILL.md

run-feature-workflow is a skill for Claude Code from markmhendrickson/ateles. It costs 12 tokens per session (727 once invoked), scanned A, a copy of run-feature-workflow, MIT.

A feature-development workflow that reads a repository's configuration, feature specification, manifest, templates, and architecture notes before changing the code. It adjusts the planning and approval process according to the feature's risk.

In plain words
What is it for?
Use it to execute a named feature unit, update unclear specifications or manifests, and apply the repository's testing, accessibility, and localization requirements.
Why use it?
It keeps implementation, tests, documentation, and project rules aligned while making more careful plans for riskier changes.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

This is markmhendrickson/ateles's own configuration. It tells Claude Code how to work on ateles 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 ateles configures →

Reuse

Borrowing it

Nothing to install: this file belongs to markmhendrickson/ateles. 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/markmhendrickson/ateles/main/.claude/skills/run-feature-workflow/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/markmhendrickson/ateles

Made for: Claude Code.

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 run-feature-workflow

README.md
[![agentmods](https://agentmods.dev/badge/skills/markmhendrickson/ateles/run-feature-workflow.svg)](https://agentmods.dev/skills/markmhendrickson/ateles/run-feature-workflow)
Your own site
<a href="https://agentmods.dev/skills/markmhendrickson/ateles/run-feature-workflow"><img src="https://agentmods.dev/badge/skills/markmhendrickson/ateles/run-feature-workflow.svg" alt="Measured on agentmods" height="20"></a>
Per session 12 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 727 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 92% copy Near-identical to another mod 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 $0.00012 $0.00727
Opus 5 $0.00006 $0.00364
Sonnet 5 $0.00002 $0.00145
Haiku 4.5 $0.00001 $0.00073

Measured 3d ago against content hash 42441fe2157c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

run-feature-workflow 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 3d 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.

Origin

This is a copy

92% identical to run-feature-workflow — 10 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/skills/run-feature-workflow/SKILL.md · 81 lines

How it starts

The opening of the file, as written. The whole thing — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Run Feature Workflow

feature_id = {{input:feature_id}}

Configuration is read from foundation-config.yaml.

  1. Load configuration:

    • Read foundation-config.yaml to get feature unit settings
    • Determine directory structure, manifest complexity, testing requirements
  2. Read authoritative documents:

    • foundation/development/feature_unit_workflow.md (workflow context)
    • {configured_directory}/in_progress/{{input:feature_id}}/{{input:feature_id}}_spec.md (or completed/ if completed)
    • {configured_directory}/in_progress/{{input:feature_id}}/manifest.yaml (or completed/ if completed)
    • foundation/development/templates/feature_unit_spec_template.md
    • Repository-specific execution instructions (if they exist)
    • Repository-specific architecture/module documentation (based on spec)
  3. Determine risk level:

    • low → skip plan
    • medium → produce brief structured plan
    • high/critical → produce detailed plan and wait for user approval
  4. Apply Feature Unit execution principles:

    • Update spec/manifest if ambiguous
    • Update code/tests/docs together
    • Follow architectural invariants (from repo-specific docs)
    • Preserve accessibility and i18n rules (if applicable)
  5. Run tests (based on configuration):

    • Unit tests (if testing.require_unit_tests: true)
    • Integration tests (if testing.require_integration_tests: true)
    • E2E tests (if testing.require_e2e_tests: true)
    • Verify coverage meets configured targets

    If any tests fail:

    • Immediately invoke Fix Feature Bug with feature_id={{input:feature_id}}
    • Do NOT attempt to fix bugs inline
    • Let the error protocol classify and correct
    • After bugfix completes, re-run the test suite
    • Only proceed to step 6 once all tests pass
  6. Apply error protocol (if repository has one) only if bugs were encountered and fixed via step 5.

  7. Spec-to-Implementation Diff Checkpoint (CRITICAL):

    Before producing the final summary:

    • Compare the implemented code against the spec
    • List any ways implementation intentionally diverged from spec (even if small)
    • For each divergence:
      • Either update the spec to reflect the change (if divergence is intentional and correct)
      • Or mark the divergence as a bug to be fixed (if divergence is unintentional)
    • Present this diff to the user:
      • "Implementation vs Spec Diff: [list of divergences]"
      • "For each divergence, should I update the spec or fix the implementation? (spec/implementation/list)"
    • Do NOT proceed to final summary until spec and implementation are aligned (either by updating spec or fixing implementation)
  8. Produce a final change summary:

    • feature_id
    • files changed
    • risk
    • error_class (if bugfix)
    • tests run
    • coverage achieved

Read the full file on GitHub · 81 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. 3d ago First seen · 81 lines · 12 tokens per session scan A 42441fe2157c

Subscribe to this mod's changes

run-feature-workflow is a skill published in the GitHub repository markmhendrickson/ateles (6 stars, last pushed today), licensed MIT. It adds 12 tokens to every session and 727 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to run-feature-workflow, differing in 10 lines, and is treated as a copy.