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Install in OpenClaw
/install subwayskill
Description
Fetch NYC subway departure times. Use when the user asks about subway trains, commute times, when the next train is, or NYC transit schedules. Covers all sub...
Usage Guidance
This skill appears to be what it says: a CLI that fetches MTA GTFS-RT and static GTFS schedules and caches them under ~/.cache/subwayskill. Before installing or invoking it, verify these points: 1) The feed URLs target MTA endpoints that in some setups require an API key — the code and SKILL.md do not declare any environment variable for an API key, so realtime fetches may fail or you may need to supply credentials via another mechanism; confirm whether your environment has access to those endpoints. 2) The tool will make outbound HTTP requests (MTA endpoints and S3) and will write cached GTFS zip files to your home directory; ensure you are comfortable with that filesystem and network access. 3) The code is published on GitHub (link provided); if you need higher assurance, inspect the repository and build it locally rather than running prebuilt binaries from unknown sources. If you plan to allow autonomous agent invocation, remember the skill can perform network I/O and create cache files when invoked.
Capability Analysis
Type: OpenClaw Skill
Name: subwayskill
Version: 1.0.0
The OpenClaw AgentSkills skill bundle for 'subwayskill' is benign. The `SKILL.md` and `README.md` provide clear, non-malicious instructions for the agent and users, defining the skill's purpose and usage without any prompt injection attempts. The Go source code implements a CLI tool that fetches NYC subway departure times from legitimate MTA GTFS-RT API endpoints and static GTFS data hosted on MTA S3 buckets (hardcoded URLs in `internal/feed/feed.go` and `internal/schedule/schedule.go`). It caches downloaded GTFS zip files in `~/.cache/subwayskill/` with appropriate permissions. All user inputs are validated or sanitized, and there is no evidence of shell injection, arbitrary code execution, sensitive data exfiltration, persistence mechanisms, or obfuscation. The code strictly adheres to its stated purpose.
Capability Assessment
Purpose & Capability
Name, README, SKILL.md and code all implement an NYC subway departures CLI that fetches GTFS-RT and static GTFS schedules and falls back to cached schedule data; required binaries and included files match that purpose. Note: the feed URLs point at MTA endpoints that commonly require an API key, but the code and SKILL.md do not declare or use any credential — this may cause realtime fetches to fail or requires additional configuration not documented.
Instruction Scope
SKILL.md instructs the agent to run the subwayskill CLI with specific flags. The runtime behavior (network calls to MTA/S3 feeds, reading embedded stations.csv, caching GTFS zips to ~/.cache/subwayskill) matches those instructions and stays within the expected scope for a transit CLI. There are no instructions to read unrelated files, other credentials, or to transmit data to unexpected endpoints.
Install Mechanism
Install guidance uses `go install github.com/nyluke/subwayskill@latest`, a standard public Go install flow. The repository/source is referenced (GitHub URL in metadata). No opaque downloads, URL shorteners, or extract-to-arbitrary-path installers are used.
Credentials
The skill requests no environment variables or credentials. Its actions (outbound HTTP GETs to MTA feed endpoints and S3 GTFS zips, reading/writing ~/.cache/subwayskill) are proportional to its purpose. However, if the MTA realtime feeds require an API key, the skill currently does not declare or accept that credential.
Persistence & Privilege
The skill does not request elevated privileges or permanent platform-wide presence (always is false). It only writes cache files under the user's home (~/.cache/subwayskill) which is reasonable for a CLI. It does not modify other skills or system-wide agent settings.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install subwayskill - After installation, invoke the skill by name or use
/subwayskill - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
Initial release of subwayskill
- Fetches NYC subway departure times for all lines (1-7, A-G, J, Z, L, N, Q, R, W, S, SIR).
- Handles queries about subway trains, commute times, next trains, and transit schedules.
- Supports fuzzy matching for station names and filtering by line, direction, or time.
- Provides both realtime (MTA GTFS-RT) and scheduled times, with structured JSON output option.
- Offers usage tips and suggestions for unrecognized stations.
Metadata
Frequently Asked Questions
What is SubwaySkill?
Fetch NYC subway departure times. Use when the user asks about subway trains, commute times, when the next train is, or NYC transit schedules. Covers all sub... It is an AI Agent Skill for Claude Code / OpenClaw, with 630 downloads so far.
How do I install SubwaySkill?
Run "/install subwayskill" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is SubwaySkill free?
Yes, SubwaySkill is completely free (open-source). You can download, install and use it at no cost.
Which platforms does SubwaySkill support?
SubwaySkill is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created SubwaySkill?
It is built and maintained by nyluke (@nyluke); the current version is v1.0.0.
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