api-spec

A skill for generating OpenAPI 3.0.3 descriptions of the API endpoints needed by a product story. OpenAPI is a standard format for documenting how software systems communicate over an API.

In plain words
What is it for?
Use it to select a story from product documents and create the minimum frontend API specification, including request and response needs.
Why use it?
It helps turn a feature story into a small, focused API design instead of adding unnecessary endpoints.

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/rakovi4/continue-framework/api-spec
Any agent
npx skills add rakovi4/continue-framework --skill api-spec
Clone the repo
git clone --depth 1 https://github.com/rakovi4/continue-framework

Made for: Claude Code, Codex.

Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 717 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 $0.00029 $0.00717
Opus 5 $0.00015 $0.00358
Sonnet 5 $0.00006 $0.00143
Haiku 4.5 $0.00003 $0.00072

Measured 2d ago against content hash 686aa7157442, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

api-spec 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 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.

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.

.claude/skills/api-spec/SKILL.md · 62 lines

How it starts

The opening of the file, as written. The whole thing — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Generate API Specification

Generate OpenAPI 3.0.3 specifications for frontend endpoints in a story.

Usage

/api-spec "Story name"
/api-spec 5                    # By MVP story number
/api-spec                      # Interactive selection

MVP Mindset

Generate the MINIMUM viable API, not the complete API.

  • Prefer fewer endpoints - consolidate where possible
  • No health/status endpoints (infrastructure, not features)
  • No separate replace endpoints (use PUT on same resource)
  • No separate "get current state" if POST response returns it
  • When in doubt, leave it out

Workflow

Phase 1: Context & Story Selection

  1. Read context files:

    • ProductSpecification/BriefProductDescription.md
    • ProductSpecification/stories.md
  2. Parse user input to find target story (by name, number, or interactive)

  3. Read the target story's folder — stories/NN-story-name/ first, then stories/done/NN-story-name/ (.claude/rules/workflow.md, "Resolving a story folder"), since an unresolved archived folder reads exactly like a story with no interview: NN_StoryName.md (specification), mockups/ (UI mockups — the fields each screen needs), interview.md if it exists (authoritative source for API details)

  4. Read what the areas this story touches already expose — the acceptance tests of those areas, for their request/response shapes, status codes and Statements. Never sweep stories/*/mockups/ or stories/*/interview.md to reconstruct it (.claude/rules/workflow.md, "Where the Current State Lives"). Only enabled tests count as shipped — one still carrying its disable/skip marker is a pending increment, not a live endpoint. Where the suite is silent about an area, read that area's controllers and say what you found — silence is not evidence that no endpoint exists. In a repo with no acceptance suite yet, say so explicitly and fall back to the story folders. Open an earlier story's interview.md or decisions/*-decision.md only for a named precedent — the rule behind an existing response shape — resolving it under stories/ or stories/done/, since the story that set the shape has usually closed (.claude/rules/workflow.md, "Resolving a story folder")

Read the full file on GitHub · 62 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. 2d ago First seen · 62 lines · 29 tokens per session scan A 686aa7157442

Subscribe to this mod's changes

api-spec is a skill published in the GitHub repository rakovi4/continue-framework (50 stars, last pushed 6d ago), licensed MIT. It adds 29 tokens to every session and 717 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 2026-08-30.

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