runway-video

runway-video is a skill for Claude Code, Codex from calesthio/generative-media-skills. It costs 50 tokens per session (18,365 once invoked), scanned A, original, MIT.

A guide to using Runway’s developer API for video generation, editing, and character-performance workflows. It focuses on Runway’s own models and server-side integrations.

In plain words
What is it for?
Use it to design text-to-video, image-to-video, video-editing, and performance-transfer integrations, handle background jobs, move media securely, and keep evidence of production decisions.
Why use it?
It helps you distinguish the developer API from Runway’s consumer tools and other services, while preventing accidental duplicate or unapproved paid requests.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument.

Good fit Use it to design text-to-video, image-to-video, video-editing, and performance-transfer integrations, handle background jobs, move media securely, and keep evidence of production decisions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/calesthio/generative-media-skills/runway-video
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.

Any agent
npx skills add calesthio/generative-media-skills --skill runway-video
Clone the repo
git clone --depth 1 https://github.com/calesthio/generative-media-skills

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 runway-video

README.md
[![agentmods](https://agentmods.dev/badge/skills/calesthio/generative-media-skills/runway-video/github.svg)](https://agentmods.dev/skills/calesthio/generative-media-skills/runway-video)
Your own site
<a href="https://agentmods.dev/skills/calesthio/generative-media-skills/runway-video"><img src="https://agentmods.dev/badge/skills/calesthio/generative-media-skills/runway-video/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 runway-video

Your own site · 80×15
<a href="https://agentmods.dev/skills/calesthio/generative-media-skills/runway-video"><img src="https://agentmods.dev/badge/skills/calesthio/generative-media-skills/runway-video.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 18,365 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 2 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 2 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Tool Misuse · line 229
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
  • medium Excessive Agency · line 214
    Skill allows unbounded resource consumption (API calls, storage, compute). Without rate limits or quotas, a compromised or misbehaving agent can cause denial-of-service or cost overruns.
    Fix: Set explicit rate limits, timeouts, and resource quotas for API calls, file operations, and compute. Implement circuit breakers for runaway loops.
How audits are shown
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 $0.00050 $0.18365
Opus 5 $0.00025 $0.09182
Sonnet 5 $0.00010 $0.03673
Haiku 4.5 $0.00005 $0.01836

Measured 9d ago against content hash 38751bab973f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

runway-video scanned grade A with 2 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 9d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

import urllib.error

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

process = subprocess.Popen(argv, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
skills/providers/video-generation/runway-video/SKILL.md · 1,412 lines

How it starts

The opening of the file, as written. The whole thing — 1,412 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Runway Video

Use this skill for server-side integrations with the documented Runway Developer API at https://api.dev.runwayml.com. It covers Runway-native video models and makes partner models, still-image generation, the consumer web app, Recipes, Workflows, Characters, and third-party gateways explicit out-of-scope branches.

Research cutoff: 2026-07-10.

Evidence language

Interpret statements in this skill as follows:

  • Fact — stated in a first-party Runway source or visible in the official OpenAPI-generated SDK.
  • Claim — Runway marketing or policy language that may depend on plan or contract.
  • Heuristic — an operational recommendation derived from the facts; validate it for the deployment.
  • Unknown — not established by the reviewed first-party public material. Do not silently fill it in.

When a volatile fact affects money, safety, payload validity, or data governance, re-open the cited first-party page before production use.

Before designing a request, obtain all of the following:

  1. The desired mode: text-to-video, image-to-video, video edit, or performance transfer.
  2. Whether Runway-native models are required or a partner model is acceptable.
  3. Output duration, dimensions, delivery format, audio expectation, and iteration budget.
  4. Rights to every prompt, image, video, face, voice, performance, mark, and music input.
  5. Explicit permission from each depicted or heard person. Runway's Usage Policy prohibits using another person's image, video, or audio without permission.
  6. A disclosure/provenance plan when realistic synthetic media could mislead viewers.
  7. Data classification, approved regions/subprocessors, retention requirement, and whether the organization's contract actually provides no-training or zero-data-retention terms.
  8. One of these execution modes:
    • Plan/dry-run — default. Validate, price, and print an approval digest. Perform no paid API creation.
    • Approved create — only after an exact request digest, bounded maximum cost, and explicit environment gates match.
    • Resume — poll an already recorded task ID; never create a replacement.
    • Cancel/delete — a separate destructive operation with a separate approval. Never infer it from a timeout.

Read the full file on GitHub · 1,412 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 9d ago First seen · 1,412 lines · 50 tokens per session scan A 38751bab973f

Subscribe to this mod's changes

runway-video is a skill published in the GitHub repository calesthio/generative-media-skills (170 stars, last pushed 2mo ago), licensed MIT. It adds 50 tokens to every session and 18,365 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 2 findings (makes network calls, runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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