developer: Instructions file for Codex

AGENTS.md

developer AGENTS.md is an instructions file for Codex, OpenCode from smarterweather/developer. It costs 1,399 tokens per session, scanned A, original, MIT.

A set of instructions for connecting software agents to Smarter Weather, a weather data service. It covers the service’s REST API and MCP connections, authentication, sign-up, and documentation.

In plain words
What is it for?
Use it to discover the weather service, create an account and API key, configure a connection, and work with its REST API or weather tools.
Why use it?
It gives an agent the correct path through account setup, API keys, authentication, and error handling instead of leaving those details to guesswork.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions AGENTS.md.

This is smarterweather/developer's own configuration. It tells Codex and OpenCode how to work on developer itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything developer configures →

Reuse

Borrowing it

Nothing to install: this file belongs to smarterweather/developer. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/smarterweather/developer/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/smarterweather/developer

Made for: Codex, OpenCode.

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.

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README.md
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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.

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Per session 1,399 This file is loaded in full into every session.
When invoked 1,399 The same file — it is already loaded in full.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 $0.01399 $0.01399
Opus 5.5 $0.00560 $0.00560
Sonnet 5.5 $0.00280 $0.00280
Haiku 4.5 $0.00140 $0.00140

Measured 4d ago against content hash 272c43222867, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

developer AGENTS.md scanned grade A with 1 finding 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.

Makes network callslowCapability

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

curl -sS -D - 'https://api.smarterweather.com/v1/weather?lat=41.66&lon=-91.53'
AGENTS.md · 115 lines

How it starts

The opening of the file, as written. The whole thing — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — Smarter Weather developer platform

Guidance for AI agents integrating with Smarter Weather.

Agents: start here. There is nothing to install. Call the REST API with no key and read the response: every 401, 403, and 429 is an RFC 9457 problem whose next_steps member names where to go (recommended first) and carries an RFC 6750 WWW-Authenticate: Bearer challenge.

curl -sS -D - 'https://api.smarterweather.com/v1/weather?lat=41.66&lon=-91.53'

Then get a key (see below). Every recommended mint path writes SMARTERWEATHER_API_KEY to a local .env (mode 0600, gitignored) and prints only a 12-character prefix — never the bearer. Call again with Authorization: Bearer $SMARTERWEATHER_API_KEY (from the env file).

Surfaces

Surface Endpoint Auth
REST API https://api.smarterweather.com Authorization: Bearer sw_live_* / sw_test_*
Weather MCP https://mcp.smarterweather.com API key Bearer; keyless: free discovery tools, x402 for the rest
Onboarding MCP https://mcp.developers.smarterweather.com Anonymous discovery tools; OAuth for account tools

Canonical machine-readable contracts:

Getting a key

  • Human present (recommended): npx -y @smarterweather/mcp-onboarding@latest login — RFC 8628 device grant; prints a verification URL for the human, writes .env, prints only a key prefix. login blocks until the human approves; run it in the background or with a long shell timeout and relay the printed URL.
  • No human present: npx -y @smarterweather/mcp-onboarding@latest trial (or stdio start_trial) — mints a trial key into .env, returns a prefix + claim link.
  • Agent holds a wallet: pay per call on the weather MCP via x402 (USDC on Base); no account needed.
  • Raw HTTP (curl / conformance only): POST /developer/keys and POST /developer/keys/trial return the bearer in the body — write only the key / api_key field to .env as SMARTERWEATHER_API_KEY= (e.g. jq -er '"SMARTERWEATHER_API_KEY=" + .key' >> .env); never print it.

Read the full file on GitHub · 115 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. 4d ago Changed · +6 lines · +95 tokens per session 272c43222867
  2. 1mo ago Changed · +16 lines · +279 tokens per session 6474de8b42aa
  3. 1mo ago Changed · +26 lines · +339 tokens per session 2c29f2be8e97
  4. 1mo ago First seen · 67 lines · 686 tokens per session scan A 769ceef02696

Subscribe to this mod's changes

developer AGENTS.md is an instructions file published in the GitHub repository smarterweather/developer (1 stars, last pushed today), licensed MIT. It adds 1,399 tokens to every session, about $0.0056 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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