Agent skill

Hydra Dev

Run HydraSRT development workflows: mix q quality gate, Elixir unit/E2E tests, native Rust tests, web Vitest/Playwright, and make dev.

Apache-2.0Auto-check passedTesting & QA

Install Hydra Dev

skills CLI

$ npx skills add streamband/hydra-srt --skill hydra-dev -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install streamband/hydra-srt hydra-dev --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/streamband/hydra-srt.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/hydra-dev .claude/skills/hydra-dev && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "hydra-dev" agent skill from https://github.com/streamband/hydra-srt/tree/main/.agents/skills/hydra-dev into .claude/skills/hydra-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hydra-dev", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/streamband/hydra-srt/tree/main/.agents/skills/hydra-dev

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add streamband/hydra-srt --skill hydra-dev -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install streamband/hydra-srt hydra-dev --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/streamband/hydra-srt.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/hydra-dev .agents/skills/hydra-dev && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "hydra-dev" agent skill from https://github.com/streamband/hydra-srt/tree/main/.agents/skills/hydra-dev into .agents/skills/hydra-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hydra-dev", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add streamband/hydra-srt --skill hydra-dev -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install streamband/hydra-srt hydra-dev --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/streamband/hydra-srt.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/hydra-dev .cursor/skills/hydra-dev && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "hydra-dev" agent skill from https://github.com/streamband/hydra-srt/tree/main/.agents/skills/hydra-dev into .cursor/skills/hydra-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hydra-dev", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/streamband/hydra-srt.git --path .agents/skills/hydra-dev

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add streamband/hydra-srt --skill hydra-dev -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install streamband/hydra-srt hydra-dev --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/streamband/hydra-srt.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/hydra-dev .gemini/skills/hydra-dev && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "hydra-dev" agent skill from https://github.com/streamband/hydra-srt/tree/main/.agents/skills/hydra-dev into .gemini/skills/hydra-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hydra-dev", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install streamband/hydra-srt hydra-dev

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add streamband/hydra-srt --skill hydra-dev -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/streamband/hydra-srt.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/hydra-dev .github/skills/hydra-dev && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "hydra-dev" agent skill from https://github.com/streamband/hydra-srt/tree/main/.agents/skills/hydra-dev into .github/skills/hydra-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hydra-dev", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add streamband/hydra-srt --skill hydra-dev -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install streamband/hydra-srt hydra-dev --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/streamband/hydra-srt.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/hydra-dev .opencode/skills/hydra-dev && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "hydra-dev" agent skill from https://github.com/streamband/hydra-srt/tree/main/.agents/skills/hydra-dev into .opencode/skills/hydra-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hydra-dev", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: hydra-dev
GitHub stars: 146
Token cost: ~995 tokens
SKILL.md length: 352 words
Files: 1
Skills in repo: 7
Repo updated: Sep 16, 2026
First seen: Oct 7, 2026
Licence: Apache-2.0

At a glance

Run HydraSRT development workflows: mix q quality gate, Elixir unit/E2E tests, native Rust tests, web Vitest/Playwright, and make dev.

Works in 6 steps: mix q — fast quality gate → mix test — Elixir unit → If touching routes/SRT/native: make… → …
The user asks to run tests
SKILL.md covers When to use, Agent behaviour, Command map and Natural language, plus 3 more sections
Calls make, npm and cargo

What it does

Hydra Dev is an agent skill from streamband/hydra-srt. Run HydraSRT development workflows: mix q quality gate, Elixir unit/E2E tests, native Rust tests, web Vitest/Playwright, and make dev. Use when the user asks to run tests, check code quality, start the dev server, or debug CI locally.

Its SKILL.md is about 1000 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Testing & QA, covering End-to-end testing, Quality gates and Unit testing. It works with Elixir, Rust, Playwright and Vitest. The repository describes itself as: An Open Source Alternative to Haivision SRT Gateway. The licence is Apache-2.0.

When your agent uses it

The user asks to run tests
Check code quality
Start the dev server
Debug CI locally

Example prompts

“/hydra-dev”

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

mix q — fast quality gate
mix test — Elixir unit
If touching routes/SRT/native: make test_e2e and/or cd native && cargo test
If touching UI: cd web_app && npm run typecheck && npm run lint && npm run test:unit
If touching MCP/tokens: mix test test/hydra_srt/db_tokens_test.exs test/hydra_srt_web/controllers/token_controller_test.exs
Commit with Conventional Commits (see AGENTS.md Standards): e.g. feat: ..., fix: ..., docs: ..., chore: ...

What it can do on your machine

Read from SKILL.md and the folder at commit 8d081f2. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
- make
- npm
- cargo
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npm, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Hydra Dev loads about 995 tokens when it runs. Until then it costs about 61 tokens; SKILL.md has 352 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~61
When it runs · the whole SKILL.md, loaded when a task matches: ~995

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from streamband/hydra-srt at commit 8d081f2, republished under its Apache-2.0 licence (© streamband). 352 words, ~995 tokens.

Download SKILL.mdSave it as .claude/skills/hydra-dev/SKILL.md (or your agent's skills folder).

name: hydra-dev
description: Run HydraSRT development workflows: mix q quality gate, Elixir unit/E2E tests, native Rust tests, web Vitest/Playwright, and make dev. Use when the user asks to run tests, check code quality, start the dev server, or debug CI locally.

HydraSRT Development

Actionable dev and test commands for HydraSRT. Stable reference: AGENTS.md, test/AGENTS.md.

When to use

Run or debug a specific test layer (Elixir, native, web)
Pre-commit quality check (mix q)
Start local dev (make dev)
Reproduce CI locally (make test_ci_local)

Agent behaviour

Show the exact shell command before running it.
Summarize pass/fail counts and duration; offer full logs on failure.
Elixir unit: default mix test (excludes :e2e, :native_e2e via test/test_helper.exs).
Elixir E2E: requires E2E=true; needs ffmpeg and native binary built.
Native E2E: requires NATIVE_E2E=true.
Do not run make test_ci_local unless the user asks (slow, full stack).
Follow project standards: no defp, do not delete commented code.
When creating commits, use Conventional Commits (feat:, fix:, docs:, etc.) per AGENTS.md.

Command map

Quality

bash

mix q
# or: mix quality
# format --check-formatted, compile --warnings-as-errors, credo, sobelow, dialyzer

First-time Dialyzer: mix dialyzer (builds PLT).

Elixir

Intent	Command
Unit (default)	`mix test`
One file	`mix test test/hydra_srt/route_handler_test.exs`
One line	`mix test test/hydra_srt/route_handler_test.exs:42`
E2E	`E2E=true mix test --only e2e` or `make test_e2e`
E2E encrypted	`E2E=true mix test --only encrypted`
Native E2E	`NATIVE_E2E=true mix test test/native_e2e`

Debug env: TRACE=true, SLOWEST=true, TEST_TIMEOUT=ms, E2E_DEBUG_LOGS=true (with E2E).

Native (Rust)

bash

cd native && cargo test          # unit
make test_rs_native_unit
make test_rs_native_e2e          # Elixir wrapper + NATIVE_E2E=true

Web

bash

cd web_app && npm run test:unit
cd web_app && npm run test:unit:watch
cd web_app && npm run test:e2e   # Playwright; backend + native build required

Aggregates

bash

make test_all        # sequential: backend unit, e2e, native unit, web unit, web e2e
make test_ci_local   # CI-equivalent (slow)
make dev             # IEx + Phoenix; see docs/envs.md for env vars

Show full SKILL.md (173 more words)Show less

Natural language

User says	Run
run unit tests / backend tests	`mix test`
run e2e / srt e2e	`E2E=true mix test --only e2e`
run native tests	`cd native && cargo test`
run web tests	`cd web_app && npm run test:unit`
run playwright	`cd web_app && npm run test:e2e`
MCP token tests	`mix test test/hydra_srt/db_tokens_test.exs test/hydra_srt_web/controllers/token_controller_test.exs`
check quality / before commit	`mix q`
start dev server	`make dev`
like CI	`make test_ci_local`

Before committing (typical)

mix q — fast quality gate
mix test — Elixir unit
If touching routes/SRT/native: make test_e2e and/or cd native && cargo test
If touching UI: cd web_app && npm run typecheck && npm run lint && npm run test:unit
If touching MCP/tokens: mix test test/hydra_srt/db_tokens_test.exs test/hydra_srt_web/controllers/token_controller_test.exs
Commit with Conventional Commits (see AGENTS.md Standards): e.g. feat: ..., fix: ..., docs: ..., chore: ...

E2E notes

E2E uses max_cases: 1 (shared DB + HTTP).
:encrypted tests skipped if ffmpeg lacks SRT passphrase support.
Helpers: HydraSrt.TestSupport.E2EHelpers — see test/AGENTS.md.

References

AGENTS.md — architecture, docs index
test/AGENTS.md — full test matrix, support modules, tags
Makefile — all test_* targets
docs/envs.md — environment variables
docs/mcp.md — MCP server, tokens, client setup

Files

Just SKILL.md in .agents/skills/hydra-dev of streamband/hydra-srt.

Open the folder on GitHubat commit 8d081f2

Compare with similar skills

Hydra Dev next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Hydra Dev compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Hydra Dev this skillstreamband/hydra-srt	146	—	~995	Automated safety check: Pass	Apache-2.0	21 days ago
Control UI E2Eopenclaw/openclaw	392k	—	~2.9k	Automated safety check: Pass	MIT	today
Svelte Testingspences10/sveltest	113	—	~579	Automated safety check: Pass	MIT	today
Playwright Testingchongdashu/vibejam-starter-pack	149	—	~2.1k	Automated safety check: Pass	None	5 mo ago
Ha Frontend Testinghome-assistant/frontend	5.7k	—	~1.7k	Automated safety check: Pass	Apache-2.0	today
Playwright Testingchongdashu/vibejam-starter-pack	149	—	~2.2k	Automated safety check: Pass	None	5 mo ago

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Questions about Hydra Dev

What does Hydra Dev do?

Run HydraSRT development workflows: mix q quality gate, Elixir unit/E2E tests, native Rust tests, web Vitest/Playwright, and make dev. Hydra Dev is an agent skill from streamband/hydra-srt. Run HydraSRT development workflows: mix q quality gate, Elixir unit/E2E tests, native Rust tests, web Vitest/Playwright, and make dev.

When should I use Hydra Dev?

Hydra Dev fits situations like: the user asks to run tests; check code quality; start the dev server; debug CI locally.

How do I install Hydra Dev in Claude Code?

Run `npx skills add streamband/hydra-srt --skill hydra-dev -a claude-code`. Or copy the skill folder (.agents/skills/hydra-dev in streamband/hydra-srt) into .claude/skills/hydra-dev in your project. Claude Code loads it when a task matches its description.

How do I install Hydra Dev in Codex?

Run `npx skills add streamband/hydra-srt --skill hydra-dev -a codex`. Or copy the skill folder (.agents/skills/hydra-dev in streamband/hydra-srt) into .agents/skills/hydra-dev in your project. Codex loads it when a task matches its description.

Can I use Hydra Dev in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add streamband/hydra-srt --skill hydra-dev -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/hydra-dev, .gemini/skills/hydra-dev, .github/skills/hydra-dev and .opencode/skills/hydra-dev in your project.

What does Hydra Dev need to run?

Going by SKILL.md and its folder, Hydra Dev needs the command-line tools its instructions call (make, npm and cargo).

Does Hydra Dev access the network?

SKILL.md contains no URLs. Its commands use npm, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Hydra Dev safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Hydra Dev use?

Hydra Dev is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Hydra Dev use?

About 995 tokens (SKILL.md is roughly 4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Hydra Dev?

Skills that share tags, products or a category with Hydra Dev: Control UI E2E (openclaw/openclaw, 392k stars), Svelte Testing (spences10/sveltest, 113 stars), Playwright Testing (chongdashu/vibejam-starter-pack, 149 stars) and Ha Frontend Testing (home-assistant/frontend, 5.7k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Hydra Dev?

streamband (a GitHub organization) maintains it in streamband/hydra-srt, which has 146 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on September 16, 2026.

Source: streamband/hydra-srt on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Hydra Dev

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

HydraSRT Development

When to use

Agent behaviour

Command map

Quality

Elixir

Native (Rust)

Web

Aggregates

Natural language

Before committing (typical)

E2E notes

References

Files

Compare with similar skills

Similar skills

More from streamband/hydra-srt

Related

Questions about Hydra Dev