Borrowing it
Nothing to install: this file belongs to TrainLCD/StationAPI. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/TrainLCD/StationAPI/dev/AGENTS.mdgit clone --depth 1 https://github.com/TrainLCD/StationAPIWrote 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.
[](https://agentmods.dev/instructions/trainlcd/stationapi/agents-md)<a href="https://agentmods.dev/instructions/trainlcd/stationapi/agents-md"><img src="https://agentmods.dev/badge/instructions/trainlcd/stationapi/agents-md/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.
<a href="https://agentmods.dev/instructions/trainlcd/stationapi/agents-md"><img src="https://agentmods.dev/badge/instructions/trainlcd/stationapi/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.08044 | $0.08044 |
| Opus 5.5 | $0.03218 | $0.03218 |
| Sonnet 5.5 | $0.01609 | $0.01609 |
| Haiku 4.5 | $0.00804 | $0.00804 |
Grade A, and why
StationAPI AGENTS.md 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 4d 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.
How it starts
The opening of the file, as written. The whole thing — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.
StationAPI Repository Guidelines
This guide explains how automation agents and human contributors should work with the StationAPI repository so releases stay predictable, auditable, and safe. Update this file whenever you change the workflow or behavior it documents.
Project Layout
src/– The Worker itself (stationapi-worker, wasm32 only).lib.rsholds the endpoints,index.rsparses the embedded CSVs into in-memory indexes,repository.rsimplements the repository traits against those indexes, andgraphql/holds the async-graphql types and resolvers.index.rsalso holds the spatial grid used by every coordinate lookup — see Coordinate lookups below.schema/public.graphql– The published GraphQL schema. CI diffs the Worker's SDL against this file, so an unintended change fails the build.build.rs– Stagesgenerated/*.csv(falling back todata/*.csv) intoOUT_DIRand pre-convertsstation_station_typesandconnectionsinto fixed-width binaries.wrangler.jsonc– Staging and production deployment settings.stationapi/src/domain/– Entity definitions and repository abstractions.repository/providesasync_trait-based interfaces, andnormalize.rscontains text normalization for search.stationapi/src/use_case/– Application logic.interactor/query.rsimplements theQueryUseCasecontract defined intraits/query.rs;dto/converts entities intomodeltypes (this is where IPA and TTS segments are built).stationapi/src/model.rs– The values the API returns; the layer between entities and GraphQL types.preprocessor/– Build-time CLI that assemblesgenerated/*.csvfromdata/*.csv, the GTFS feeds, the Tokyu ODPT JSON, and the MLIT railway data (N02, for track lengths — see Track distances below).data/– Canonical CSV datasets. Files follow theN!table.csvnaming scheme. Detailed instructions are indata/README.md.data_validator/– CLI that verifies cross-file constraints (cargo run -p data_validator).Makefile– Convenience targets (make helplists them all).
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.
- 4d ago Changed · +3 lines · +91 tokens per session 789ebbf6d3de
- 15d ago Changed · +4 lines · -629 tokens per session d42762d7f7e6
- 29d ago Changed · +1 lines · +755 tokens per session c1d3a0e3fb28
- 1mo ago Changed · +3 lines · +791 tokens per session 077d3c3db6f9
- 1mo ago Changed · +78 tokens per session 825492e8caf7
- 1mo ago Changed · -1 lines · -65 tokens per session f8744fea1ded
- 1mo ago Changed · +27 tokens per session 335049a0966f
- 1mo ago Changed · +1 lines · +1,229 tokens per session bbafefe10a02
- 1mo ago Changed · -1 lines · -379 tokens per session 30ee3317c267
- 2mo ago First seen · 127 lines · 6,146 tokens per session scan A b9b120c524fe
StationAPI AGENTS.md is an instructions file published in the GitHub repository TrainLCD/StationAPI (14 stars, last pushed 4d ago), licensed MIT. It adds 8,044 tokens to every session, about $0.0322 per session on Opus 5.5. 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 2026-08-31.
Other instructions, from other repositories
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