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new: [opencode-greenpt-usage] add GreenPT credit balance plugin

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Show the remaining GreenPT API credit balance in the OpenCode TUI
sidebar. The key is resolved from the ``apiKey`` option, the
``GREENPT_API_KEY`` environment variable, or the active OpenCode
``auth.json`` (provider ``greenpt``); the section is hidden when no key
is present, so the plugin stays portable across machines and profiles.

The balance is read from the ``x-credits-remaining`` header returned by
a free ``HEAD /v1/chat/completions`` probe (HTTP 400 before any credit
is consumed), which avoids a billable call per refresh. Tests cover the
credential resolution, the header parsing and the live API.

Distribute via git clone; there is no npm publish.
This commit is contained in:
Stéphan Sainléger
2026-09-29 21:54:23 +02:00
commit 5c11754e2d
18 changed files with 5268 additions and 0 deletions
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# AGENTS.md
## Project
`opencode-greenpt-usage` — an OpenCode **TUI** plugin (Solid + OpenTUI) that
shows the remaining GreenPT API credit balance in the sidebar. Distributed by
`git clone`; there is no npm publish.
## Commands
```bash
npm install # install dev dependencies
npm test # unit tests (vitest)
npm run typecheck # tsc --noEmit
GREENPT_API_KEY=... npm run test:integration # live API test
```
## Conventions
- The plugin entry is the `default export { id, tui }` in `src/index.tsx`.
Types come from `@opencode-ai/plugin/tui` as **type-only** imports; the
host provides `solid-js` and `@opentui/solid` at runtime.
- The section is registered on the `sidebar_content` slot and is hidden when
no GreenPT credential is present (`showWhenUnavailable` opts into a hint).
- Balance probing must stay **free**: `HEAD /v1/chat/completions` returns
`400` plus `x-credits-remaining`. Never replace it with a billable call.
- Credential resolution order: `apiKey` option, `GREENPT_API_KEY`, active
OpenCode `auth.json` (`greenpt`, `type: "api"`). No profile-switching
command may leak into this logic.
- No code comments unless functionally required.

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AGENTS.md

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free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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You should have received a copy of the GNU Affero General Public License
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Also add information on how to contact you by electronic and paper mail.
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network, you should also make sure that it provides a way for users to
get its source. For example, if your program is a web application, its
interface could display a "Source" link that leads users to an archive
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You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
<https://www.gnu.org/licenses/>.

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# opencode-greenpt-usage
An [OpenCode](https://opencode.ai) TUI plugin that shows the remaining
**GreenPT API credit balance** in the sidebar.
```
▼ GreenPT
Balance 5.31 € updated 21:35
```
## How it works
- The API key is resolved in this order:
1. the plugin `apiKey` option;
2. the `GREENPT_API_KEY` environment variable;
3. the **active** OpenCode auth store (`auth.json`, provider `greenpt`,
entry `type: "api"`) — i.e. exactly what a plain `opencode auth login`
produces.
- The balance is read with a **free** `HEAD /v1/chat/completions` probe:
the API answers `400 Bad Request` before any billing, yet the response
still carries the `x-credits-remaining` header. No credit is consumed
and no generation is triggered.
- The section is **hidden while no GreenPT key is present**.
- Refresh happens on startup, at the end of a session, on server
reconnection, on a timer (300 s by default) and on demand through the
`greenpt.refresh` command.
There is no dependency on any local profile or command: the plugin only
looks for a key.
## Requirements
- OpenCode `>= 1.18.0` (TUI plugin system).
- A GreenPT account and API key.
## Installation
1. **Clone this repository** wherever you keep your projects.
2. **Connect GreenPT to OpenCode**:
```bash
opencode auth login
```
Pick **GreenPT** from the list, then paste the API key.
(Alternative: export `GREENPT_API_KEY` in your environment.)
3. **Register the plugin** in `~/.config/opencode/tui.json`, setting the
**absolute path to your clone**:
```jsonc
{
"$schema": "https://opencode.ai/tui.json",
"plugin": [
["file:///ABSOLUTE/PATH/TO/opencode-greenpt-usage/src/index.tsx", { "order": 700 }]
]
}
```
> Use a `file://` URL pointing at the source file `src/index.tsx`
> (OpenCode compiles the TSX itself). Do not point at a bundle: that
> would embed a second copy of `solid-js` and the section would stay
> blank.
4. **Fully quit OpenCode and relaunch it** (plugins are not hot-reloaded).
## Configuration
All options are optional and go in the plugin entry of `tui.json`:
| Option | Type | Default | Description |
| --------------------- | ------- | --------------------------- | ------------------------------------------------------- |
| `apiKey` | string | resolved automatically | Explicit GreenPT key. |
| `baseUrl` | string | `https://api.greenpt.ai/v1` | GreenPT API base URL. |
| `refreshInterval` | number | `300` | Refresh interval in seconds (`0` disables the timer). |
| `order` | number | `700` | Sidebar section position. |
| `showWhenUnavailable` | boolean | `false` | Show a hint when no GreenPT key exists. |
| `unit` | string | `€` | Unit appended after the amount. |
## Troubleshooting
- **The section does not appear**: make sure `opencode auth login` stored a
`greenpt` key (or that `GREENPT_API_KEY` is set), and that the `file://`
URL in `tui.json` points at the right path.
- **"invalid GreenPT key"**: the API key was rejected (HTTP 401).
- **"balance unavailable"**: GreenPT did not return the balance header; try
again later.
## Development
```bash
npm install
npm test # unit tests
npm run typecheck # type check
GREENPT_API_KEY=... npm run test:integration # test against the live API
```
## License
AGPL-3.0-or-later. See [LICENSE](LICENSE).

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{
"name": "opencode-greenpt-usage",
"version": "0.1.0",
"description": "OpenCode TUI plugin that shows the remaining GreenPT API credit balance in the sidebar.",
"type": "module",
"license": "AGPL-3.0-or-later",
"keywords": [
"opencode",
"opencode-plugin",
"tui",
"greenpt",
"credits",
"balance"
],
"engines": {
"opencode": ">=1.18.0"
},
"scripts": {
"test": "vitest run",
"test:integration": "GREENPT_INTEGRATION=1 vitest run test/integration.greenpt.test.ts",
"typecheck": "tsc --noEmit"
},
"peerDependencies": {
"@opencode-ai/plugin": "*",
"@opentui/solid": "*",
"solid-js": "*"
},
"devDependencies": {
"@opencode-ai/plugin": "^1.18.33",
"@opentui/solid": "^0.5.12",
"@types/node": "^24.0.0",
"solid-js": "^1.9.0",
"typescript": "^5.6.0",
"vitest": "^3.0.0"
}
}

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import { request as httpRequest } from "node:http"
import { request as httpsRequest } from "node:https"
/**
* Response header carrying the remaining credit balance.
*
* The public documentation mentions `x-credit-balance`, but the live API
* actually returns `x-credits-remaining`; both are accepted, the live one
* taking precedence.
*/
export const CREDIT_HEADERS = ["x-credits-remaining", "x-credit-balance"] as const
export type Balance = {
credits: number
raw: string
}
export type BalanceError =
| { kind: "unauthorized" }
| { kind: "missing-header"; status: number }
| { kind: "network"; cause?: unknown }
export type BalanceResult = Balance | BalanceError
export type FetchLike = (input: string, init?: RequestInit) => Promise<Response>
function headerMap(headers: HeadersInit | undefined): Record<string, string> {
const out: Record<string, string> = {}
if (!headers) return out
new Headers(headers).forEach((value, key) => {
out[key] = value
})
return out
}
/**
* Direct Node HTTP(S) request, bypassing OpenCode's local-server fetch
* wrapper (which would otherwise intercept the call).
*
* @param input Absolute URL to request.
* @param init Optional method, headers and abort signal.
* @returns A standard `Response`, with the body buffered in memory.
*/
export function nativeFetch(input: string, init?: RequestInit): Promise<Response> {
return new Promise((resolve, reject) => {
const url = new URL(input)
const lib = url.protocol === "http:" ? httpRequest : httpsRequest
const req = lib(
{
hostname: url.hostname,
port: url.port || undefined,
path: `${url.pathname}${url.search}`,
method: init?.method ?? "GET",
headers: headerMap(init?.headers),
},
(res) => {
const chunks: Uint8Array[] = []
res.on("data", (chunk) => {
chunks.push(chunk instanceof Uint8Array ? chunk : Uint8Array.from(chunk))
})
res.on("end", () => {
const headers = new Headers()
for (const [key, value] of Object.entries(res.headers)) {
if (typeof value === "string") headers.set(key, value)
else if (Array.isArray(value)) headers.set(key, value.join(", "))
}
const body = new Uint8Array(chunks.reduce((sum, c) => sum + c.byteLength, 0))
let offset = 0
for (const chunk of chunks) {
body.set(chunk, offset)
offset += chunk.byteLength
}
resolve(new Response(body, { status: res.statusCode ?? 0, headers }))
})
},
)
const abort = () => {
req.destroy()
reject(Object.assign(new Error("Aborted"), { name: "AbortError" }))
}
if (init?.signal?.aborted) {
abort()
return
}
init?.signal?.addEventListener("abort", abort, { once: true })
req.on("error", reject)
req.end()
})
}
/**
* Extract the credit balance from response headers.
*
* @param headers Response headers to inspect.
* @returns The parsed balance, or `null` when no known header is present or
* its value is not a finite number (the latter is treated as
* absent to keep the display resilient).
*/
export function parseCreditHeader(headers: HeadersInit | undefined): Balance | null {
if (!headers) return null
const map = new Headers(headers)
for (const name of CREDIT_HEADERS) {
const raw = map.get(name)
if (raw === null) continue
const trimmed = raw.trim()
const credits = Number.parseFloat(trimmed)
if (!Number.isFinite(credits)) return null
return { credits, raw: trimmed }
}
return null
}
/**
* Fetch the remaining GreenPT credit balance.
*
* The balance is only exposed on the (billable) chat-completions route. A
* `HEAD` request without a body is rejected by the API with `400 Bad
* Request` **before** any credit is consumed, yet the response still
* carries the credit header. This makes the probe free and side-effect
* free.
*
* A `GET` fallback is attempted if `HEAD` yields no header, and any
* `401`/`403` is reported as an authentication failure.
*
* @param baseUrl GreenPT API base URL (e.g. `https://api.greenpt.ai/v1`).
* @param apiKey Bearer API key.
* @param signal Optional abort signal.
* @param fetchImpl Injectable fetch implementation (tests / native fallback).
* @returns The balance on success, or a typed `BalanceError`.
*/
export async function fetchBalance(
baseUrl: string,
apiKey: string,
signal?: AbortSignal,
fetchImpl: FetchLike = nativeFetch,
): Promise<BalanceResult> {
const endpoint = `${baseUrl.replace(/\/+$/, "")}/chat/completions`
const headers: Record<string, string> = {
Authorization: `Bearer ${apiKey}`,
Accept: "application/json",
"User-Agent": "opencode-greenpt-usage",
}
let lastStatus = 0
for (const method of ["HEAD", "GET"] as const) {
let response: Response
try {
response = await fetchImpl(endpoint, { method, headers, signal })
} catch (cause) {
if (signal?.aborted) throw cause
return { kind: "network", cause }
}
if (response.status === 401 || response.status === 403) return { kind: "unauthorized" }
const parsed = parseCreditHeader(response.headers)
if (parsed) return parsed
lastStatus = response.status
}
return { kind: "missing-header", status: lastStatus }
}

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import { existsSync, readFileSync } from "node:fs"
import { homedir } from "node:os"
import { join } from "node:path"
/** Provider id OpenCode uses for GreenPT in its auth store. */
export const GREENPT_PROVIDER_ID = "greenpt"
/** Environment variable documented by GreenPT / models.dev for the API key. */
export const GREENPT_API_KEY_ENV = "GREENPT_API_KEY"
export type CredentialOptions = {
apiKey?: string
}
export type CredentialEnv = NodeJS.Dict<string>
export type CredentialResult =
| { ok: true; key: string }
| { ok: false; reason: "missing" }
/**
* Resolve the GreenPT API key.
*
* Resolution order (first match wins):
* 1. the explicit `apiKey` plugin option;
* 2. the `GREENPT_API_KEY` environment variable;
* 3. the active OpenCode auth store (`auth.json`, provider `greenpt`,
* entry `type: "api"`).
*
* No dependency on any local profile-switching command: the store that is
* active at runtime is the one read, which is what a plain `opencode auth
* login` produces.
*
* @param options Plugin options, possibly carrying an explicit key.
* @param stateDir OpenCode state directory (from `api.state.path.state`).
* @param env Environment mapping, injectable for tests.
* @returns `{ ok: true, key }` when a key is found, otherwise
* `{ ok: false, reason: "missing" }`.
*/
export function resolveGreenptKey(
options: CredentialOptions,
stateDir: string | undefined,
env: CredentialEnv = process.env as CredentialEnv,
): CredentialResult {
const fromOption = options.apiKey?.trim()
if (fromOption) return { ok: true, key: fromOption }
const fromEnv = env[GREENPT_API_KEY_ENV]?.trim()
if (fromEnv) return { ok: true, key: fromEnv }
for (const dir of credentialSearchDirs(stateDir, env)) {
const fromAuthFile = readAuthJsonKey(dir)
if (fromAuthFile) return { ok: true, key: fromAuthFile }
}
return { ok: false, reason: "missing" }
}
/**
* Compute the candidate directories that may hold an OpenCode `auth.json`,
* in priority order and without duplicates.
*
* @param stateDir Directory reported by the TUI plugin API, if available.
* @param env Environment mapping used to honour `OPENCODE_DATA_DIR` and
* `XDG_DATA_HOME` / `$HOME`.
* @returns An ordered, de-duplicated list of directories.
*/
export function credentialSearchDirs(
stateDir: string | undefined,
env: CredentialEnv = process.env as CredentialEnv,
): string[] {
const dirs: string[] = []
const extra = stateDir?.trim()
if (extra) dirs.push(extra)
const explicit = env.OPENCODE_DATA_DIR?.trim()
if (explicit) dirs.push(explicit)
const xdg = env.XDG_DATA_HOME?.trim()
if (xdg) {
dirs.push(join(xdg, "opencode"))
} else {
const home = env.HOME?.trim() || (env === process.env ? homedir() : undefined)
if (home) dirs.push(join(home, ".local", "share", "opencode"))
}
return [...new Set(dirs)]
}
/**
* Read the GreenPT API key from an OpenCode `auth.json` file.
*
* Only `type: "api"` entries with a non-empty `key` field are accepted;
* OAuth entries are ignored because the GreenPT API is API-key based.
*
* @param stateDir Directory containing `auth.json`.
* @returns The key, or `undefined` when absent or unreadable.
*/
function readAuthJsonKey(stateDir: string): string | undefined {
const authPath = join(stateDir, "auth.json")
if (!existsSync(authPath)) return undefined
try {
const parsed = JSON.parse(readFileSync(authPath, "utf8")) as Record<
string,
{ type?: string; key?: string } | undefined
>
const entry = parsed[GREENPT_PROVIDER_ID]
if (entry && entry.type === "api" && typeof entry.key === "string" && entry.key) {
return entry.key
}
} catch {
// Unreadable or malformed auth store: treat as no credential.
}
return undefined
}

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import type { BalanceError } from "./balance"
/** Key used to persist the section fold state in the shared KV store. */
export const BALANCE_OPEN_KV = "greenpt.usage.open"
/** Default unit appended to the balance (GreenPT credits are euro-denominated). */
export const DEFAULT_UNIT = "€"
/**
* Format a credit amount for display with two decimals.
*
* @param credits Numeric balance.
* @returns The formatted amount (without unit), or `"-"` when not finite.
*/
export function formatCredits(credits: number): string {
if (!Number.isFinite(credits)) return "-"
return credits.toFixed(2)
}
/**
* Human-readable message for a balance error.
*
* @param error Typed error returned by the balance client.
* @returns A short, single-line description.
*/
export function formatBalanceError(
error: BalanceError | { kind: "no-credential"; reason: "missing" },
): string {
switch (error.kind) {
case "unauthorized":
return "invalid GreenPT key"
case "missing-header":
return `balance unavailable (http ${error.status})`
case "network":
return "network error"
case "no-credential":
return "no GreenPT key (/connect)"
}
}
/**
* Read the persisted fold state, tolerating a missing or broken KV store.
*
* @param kv KV store exposing `get`, if available.
* @param fallback Value returned when the state is absent or invalid.
* @returns Whether the section should start expanded.
*/
export function readFoldOpen(
kv: { get: (key: string, fallback?: boolean) => unknown } | undefined,
fallback = true,
): boolean {
if (!kv) return fallback
try {
const value = kv.get(BALANCE_OPEN_KV, fallback)
if (typeof value !== "boolean") return fallback
return value
} catch {
return fallback
}
}

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/** @jsxImportSource @opentui/solid */
import type { TuiPlugin, TuiPluginModule } from "@opencode-ai/plugin/tui"
import { createBalanceStore, type BalanceOptions } from "./store"
import { GreenptWidget } from "./widget"
/** Sidebar slot order; the OpenCode Go widget uses 600. */
const DEFAULT_ORDER = 700
const tui: TuiPlugin = async (api, options) => {
const opts = (options ?? {}) as BalanceOptions
const store = createBalanceStore(api, opts)
api.slots.register({
order:
typeof opts.order === "number" && Number.isFinite(opts.order) ? opts.order : DEFAULT_ORDER,
slots: {
sidebar_content() {
return (
<GreenptWidget
api={api}
store={store}
showWhenUnavailable={opts.showWhenUnavailable === true}
unit={opts.unit}
/>
)
},
},
})
api.command?.register(() => [
{
value: "greenpt.refresh",
title: "Refresh GreenPT balance",
category: "Plugin",
onSelect() {
void store.refresh()
},
},
])
api.lifecycle.onDispose(() => store.dispose())
void store.refresh()
}
const plugin: TuiPluginModule & { id: string } = {
id: "greenpt.usage",
tui,
}
export default plugin

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import { createSignal } from "solid-js"
import type { TuiPluginApi } from "@opencode-ai/plugin/tui"
import { fetchBalance, nativeFetch, type Balance, type BalanceError, type FetchLike } from "./balance"
import { resolveGreenptKey, type CredentialEnv } from "./credential"
/** Default GreenPT API base URL. */
export const DEFAULT_BASE_URL = "https://api.greenpt.ai/v1"
/** Default refresh interval, in seconds. The probe is free but should stay gentle. */
export const DEFAULT_REFRESH_SECONDS = 300
export type BalanceOptions = {
apiKey?: string
baseUrl?: string
refreshInterval?: number
order?: number
showWhenUnavailable?: boolean
unit?: string
}
export type BalanceState =
| { status: "loading" }
| { status: "ready"; data: Balance; fetchedAt: number }
| {
status: "error"
error: BalanceError | { kind: "no-credential"; reason: "missing" }
}
export type BalanceStore = {
state: () => BalanceState
now: () => number
refresh: () => Promise<void>
dispose: () => void
}
const BACKOFF_BASE_MS = 60_000
const BACKOFF_MAX_MS = 10 * 60_000
const STATE_RETRY_MS = 5_000
const TICK_MS = 30_000
/**
* Create the reactive store backing the sidebar widget.
*
* Refreshes on creation, on `session.idle`, on `server.connected`, on a
* timer, and on demand via `refresh()`. Errors are retried with an
* exponential backoff so a transient outage does not hammer the API.
*
* @param api TUI plugin API (used for the auth store path and events).
* @param options Plugin options.
* @param env Environment mapping, injectable for tests.
* @param fetchImpl Fetch implementation, injectable for tests.
* @returns The store.
*/
export function createBalanceStore(
api: TuiPluginApi,
options: BalanceOptions = {},
env: CredentialEnv = process.env as CredentialEnv,
fetchImpl: FetchLike = nativeFetch,
): BalanceStore {
const [state, setState] = createSignal<BalanceState>({ status: "loading" })
const [now, setNow] = createSignal(Date.now())
const baseUrl = options.baseUrl ?? DEFAULT_BASE_URL
const interval = options.refreshInterval ?? DEFAULT_REFRESH_SECONDS
let refreshTimer: ReturnType<typeof setTimeout> | undefined
let tickTimer: ReturnType<typeof setTimeout> | undefined
let stateRetryTimer: ReturnType<typeof setTimeout> | undefined
let backoff = BACKOFF_BASE_MS
let inFlight = false
let disposed = false
let retriedState = false
const controller = new AbortController()
const unsubscribeIdle = api.event.on("session.idle", () => void refresh())
const unsubscribeConnected = api.event.on("server.connected", () => void refresh())
function scheduleNext() {
if (disposed) return
if (refreshTimer) clearTimeout(refreshTimer)
refreshTimer = undefined
const intervalMs = interval * 1000
if (intervalMs <= 0) return
const delay = state().status === "error" ? backoff : intervalMs
refreshTimer = setTimeout(() => {
refreshTimer = undefined
void refresh()
}, delay)
}
function tick() {
if (disposed) return
setNow(Date.now())
tickTimer = setTimeout(tick, TICK_MS)
}
async function refresh(): Promise<void> {
if (disposed || inFlight) return
inFlight = true
try {
const credential = resolveGreenptKey(options, api.state.path.state, env)
if (!credential.ok) {
setState({ status: "error", error: { kind: "no-credential", reason: credential.reason } })
if (api.state.path.state === undefined && !retriedState) {
retriedState = true
stateRetryTimer = setTimeout(() => void refresh(), STATE_RETRY_MS)
}
return
}
let result
try {
result = await fetchBalance(baseUrl, credential.key, controller.signal, fetchImpl)
} catch {
if (disposed) return
result = { kind: "network", cause: undefined } as BalanceError
}
if (disposed) return
if ("credits" in result) {
backoff = BACKOFF_BASE_MS
setState({ status: "ready", data: result, fetchedAt: Date.now() })
} else {
backoff = Math.min(backoff * 2, BACKOFF_MAX_MS)
setState({ status: "error", error: result })
}
} finally {
inFlight = false
}
if (disposed) return
scheduleNext()
}
tickTimer = setTimeout(tick, TICK_MS)
function dispose() {
disposed = true
controller.abort()
if (refreshTimer) clearTimeout(refreshTimer)
if (tickTimer) clearTimeout(tickTimer)
if (stateRetryTimer) clearTimeout(stateRetryTimer)
unsubscribeIdle()
unsubscribeConnected()
}
return { state, now, refresh, dispose }
}

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/** @jsxImportSource @opentui/solid */
import { createSignal, Match, Show, Switch } from "solid-js"
import type { TuiPluginApi, TuiThemeCurrent } from "@opencode-ai/plugin/tui"
import { formatBalanceError, formatCredits, readFoldOpen, BALANCE_OPEN_KV, DEFAULT_UNIT } from "./format"
import type { BalanceStore } from "./store"
/**
* Sidebar section showing the remaining GreenPT credit balance.
*
* The section is hidden entirely when no GreenPT credential is available
* and `showWhenUnavailable` is false, so a colleague who does not use
* GreenPT never sees an empty or misleading block.
*/
export function GreenptWidget(props: {
api: TuiPluginApi
store: BalanceStore
showWhenUnavailable: boolean
unit?: string
}) {
const theme = () => props.api.theme.current
const state = () => props.store.state()
const status = () => state().status
const [open, setOpen] = createSignal(readFoldOpen(props.api.kv))
const toggle = () => {
const next = !open()
setOpen(next)
try {
props.api.kv.set(BALANCE_OPEN_KV, next)
} catch {
// KV persistence is optional; the local toggle still applies.
}
}
const error = () => {
const s = state()
return s.status === "error" ? s.error : undefined
}
const credentialReason = () => {
const e = error()
return e?.kind === "no-credential" ? e.reason : undefined
}
const hidden = () => credentialReason() !== undefined && !props.showWhenUnavailable
const unit = () => props.unit ?? DEFAULT_UNIT
const balanceText = () => {
const s = state()
if (s.status !== "ready") return undefined
return `${formatCredits(s.data.credits)} ${unit()}`
}
const balanceColor = () => {
const s = state()
return s.status === "ready" && s.data.credits > 0 ? "success" : "error"
}
const updatedAt = () => {
const s = state()
if (s.status !== "ready") return ""
const d = new Date(s.fetchedAt)
const hh = String(d.getHours()).padStart(2, "0")
const mm = String(d.getMinutes()).padStart(2, "0")
return `updated ${hh}:${mm}`
}
return (
<Show when={!hidden()} fallback={<box />}>
<box flexDirection="column" gap={1}>
<text fg={theme().text} onMouseUp={toggle}>
<span style={{ fg: theme().textMuted }}>{open() ? "▼ " : "▶ "}</span>
<b>GreenPT</b>
<Show when={!open() && balanceText()}>
{(text) => <span style={{ fg: theme()[balanceColor()] }}> {text()}</span>}
</Show>
</text>
<Show when={open()}>
<Switch>
<Match when={status() === "ready"}>
<box flexDirection="row" gap={1} justifyContent="space-between">
<text fg={theme().textMuted}>Balance</text>
<box flexDirection="row" gap={1}>
<text fg={theme()[balanceColor()]}>{balanceText()}</text>
<text fg={theme().textMuted}>{updatedAt()}</text>
</box>
</box>
</Match>
<Match when={status() === "loading"}>
<text fg={theme().textMuted}>loading…</text>
</Match>
<Match when={credentialReason() !== undefined && props.showWhenUnavailable}>
<CredentialHint reason={credentialReason()!} theme={theme()} />
</Match>
<Match when={status() === "error"}>
<text fg={theme().textMuted}>{formatBalanceError(error()!)}</text>
</Match>
</Switch>
</Show>
</box>
</Show>
)
}
/**
* Hint shown when the credential is missing and the section is explicitly
* kept visible.
*/
function CredentialHint(props: { reason: "missing"; theme: TuiThemeCurrent }) {
return (
<text fg={props.theme.textMuted}>
{props.reason === "missing" ? "no GreenPT key (/connect)" : "no GreenPT key"}
</text>
)
}

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import { describe, expect, it } from "vitest"
import { fetchBalance, parseCreditHeader, type FetchLike } from "../src/balance"
const API_KEY = "test-key"
function headers(init: Record<string, string>): Headers {
return new Headers(init)
}
describe("parseCreditHeader", () => {
it("reads the live x-credits-remaining header", () => {
expect(parseCreditHeader(headers({ "x-credits-remaining": "5.309411174" }))).toEqual({
credits: 5.309411174,
raw: "5.309411174",
})
})
it("accepts the documented x-credit-balance fallback", () => {
expect(parseCreditHeader(headers({ "x-credit-balance": "12.5" }))).toEqual({
credits: 12.5,
raw: "12.5",
})
})
it("prefers the live header when both are present", () => {
const result = parseCreditHeader(
headers({ "x-credits-remaining": "1", "x-credit-balance": "2" }),
)
expect(result?.credits).toBe(1)
})
it("returns null when neither header is present", () => {
expect(parseCreditHeader(headers({ "content-type": "application/json" }))).toBeNull()
})
it("returns null for a malformed value", () => {
expect(parseCreditHeader(headers({ "x-credits-remaining": "not-a-number" }))).toBeNull()
})
it("returns null for undefined headers", () => {
expect(parseCreditHeader(undefined)).toBeNull()
})
})
describe("fetchBalance", () => {
it("returns the balance from a free 400 probe", async () => {
const fetchImpl: FetchLike = async () =>
new Response(null, {
status: 400,
headers: { "x-credits-remaining": "5.309411174" },
})
const result = await fetchBalance("https://api.greenpt.ai/v1", API_KEY, undefined, fetchImpl)
expect(result).toEqual({ credits: 5.309411174, raw: "5.309411174" })
})
it("uses HEAD first, without a body", async () => {
let method: string | undefined
const fetchImpl: FetchLike = async (_input, init) => {
method = init?.method
return new Response(null, { status: 400, headers: { "x-credits-remaining": "1" } })
}
await fetchBalance("https://api.greenpt.ai/v1", API_KEY, undefined, fetchImpl)
expect(method).toBe("HEAD")
})
it("normalises a trailing slash on the base URL", async () => {
let url: string | undefined
const fetchImpl: FetchLike = async (input) => {
url = input
return new Response(null, { status: 400, headers: { "x-credits-remaining": "1" } })
}
await fetchBalance("https://api.greenpt.ai/v1/", API_KEY, undefined, fetchImpl)
expect(url).toBe("https://api.greenpt.ai/v1/chat/completions")
})
it("reports unauthorized on 401", async () => {
const fetchImpl: FetchLike = async () => new Response(null, { status: 401 })
const result = await fetchBalance("https://api.greenpt.ai/v1", API_KEY, undefined, fetchImpl)
expect(result).toEqual({ kind: "unauthorized" })
})
it("falls back to GET when HEAD carries no header", async () => {
const methods: string[] = []
const fetchImpl: FetchLike = async (_input, init) => {
methods.push(init?.method ?? "GET")
if (init?.method === "HEAD") return new Response(null, { status: 400 })
return new Response(null, { status: 400, headers: { "x-credits-remaining": "7.5" } })
}
const result = await fetchBalance("https://api.greenpt.ai/v1", API_KEY, undefined, fetchImpl)
expect(methods).toEqual(["HEAD", "GET"])
expect(result).toEqual({ credits: 7.5, raw: "7.5" })
})
it("reports a missing header when none is present", async () => {
const fetchImpl: FetchLike = async () => new Response(null, { status: 400 })
const result = await fetchBalance("https://api.greenpt.ai/v1", API_KEY, undefined, fetchImpl)
expect(result).toEqual({ kind: "missing-header", status: 400 })
})
it("reports a network error", async () => {
const fetchImpl: FetchLike = async () => {
throw new Error("boom")
}
const result = await fetchBalance("https://api.greenpt.ai/v1", API_KEY, undefined, fetchImpl)
if (!("kind" in result)) throw new Error("expected an error result")
expect(result.kind).toBe("network")
})
})

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import { afterEach, describe, expect, it } from "vitest"
import { mkdtempSync, mkdirSync, rmSync, writeFileSync } from "node:fs"
import { tmpdir } from "node:os"
import { join } from "node:path"
import { credentialSearchDirs, resolveGreenptKey } from "../src/credential"
const created: string[] = []
function tempDir(): string {
const dir = mkdtempSync(join(tmpdir(), "greenpt-cred-"))
created.push(dir)
return dir
}
function writeAuth(dir: string, content: unknown): void {
writeFileSync(join(dir, "auth.json"), JSON.stringify(content))
}
afterEach(() => {
while (created.length > 0) {
const dir = created.pop()
if (dir) rmSync(dir, { recursive: true, force: true })
}
})
describe("resolveGreenptKey", () => {
it("prefers the explicit apiKey option", () => {
const dir = tempDir()
writeAuth(dir, { greenpt: { type: "api", key: "from-auth" } })
const result = resolveGreenptKey({ apiKey: "from-option" }, dir, { GREENPT_API_KEY: "from-env" })
expect(result).toEqual({ ok: true, key: "from-option" })
})
it("prefers the environment variable over the auth store", () => {
const dir = tempDir()
writeAuth(dir, { greenpt: { type: "api", key: "from-auth" } })
const result = resolveGreenptKey({}, dir, { GREENPT_API_KEY: "from-env" })
expect(result).toEqual({ ok: true, key: "from-env" })
})
it("reads the active auth store when nothing else is set", () => {
const dir = tempDir()
writeAuth(dir, { greenpt: { type: "api", key: "from-auth" } })
const result = resolveGreenptKey({}, dir, {})
expect(result).toEqual({ ok: true, key: "from-auth" })
})
it("ignores OAuth entries", () => {
const dir = tempDir()
writeAuth(dir, { greenpt: { type: "oauth", access: "token" } })
const result = resolveGreenptKey({}, dir, {})
expect(result).toEqual({ ok: false, reason: "missing" })
})
it("ignores empty keys", () => {
const dir = tempDir()
writeAuth(dir, { greenpt: { type: "api", key: "" } })
const result = resolveGreenptKey({}, dir, {})
expect(result).toEqual({ ok: false, reason: "missing" })
})
it("returns missing when no credential is available", () => {
const dir = tempDir()
const result = resolveGreenptKey({}, dir, {})
expect(result).toEqual({ ok: false, reason: "missing" })
})
it("falls back to XDG data home", () => {
const xdg = tempDir()
const stateDir = join(xdg, "opencode")
mkdirSync(stateDir)
writeAuth(stateDir, { greenpt: { type: "api", key: "from-xdg" } })
const result = resolveGreenptKey({}, undefined, { XDG_DATA_HOME: xdg })
expect(result).toEqual({ ok: true, key: "from-xdg" })
})
})
describe("credentialSearchDirs", () => {
it("puts the state dir first and de-duplicates", () => {
const dirs = credentialSearchDirs("/state", {
XDG_DATA_HOME: "/xdg",
OPENCODE_DATA_DIR: "/state",
})
expect(dirs[0]).toBe("/state")
expect(dirs).toContain(join("/xdg", "opencode"))
expect(new Set(dirs).size).toBe(dirs.length)
})
it("falls back to ~/.local/share/opencode", () => {
const dirs = credentialSearchDirs(undefined, { HOME: "/home/tester" })
expect(dirs).toContain(join("/home/tester", ".local", "share", "opencode"))
})
})

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import { describe, expect, it } from "vitest"
import { formatBalanceError, formatCredits, readFoldOpen } from "../src/format"
describe("formatCredits", () => {
it("formats with two decimals", () => {
expect(formatCredits(5.309411174)).toBe("5.31")
})
it("formats zero", () => {
expect(formatCredits(0)).toBe("0.00")
})
it("returns a dash for non-finite input", () => {
expect(formatCredits(Number.NaN)).toBe("-")
})
})
describe("formatBalanceError", () => {
it("renders each error kind", () => {
expect(formatBalanceError({ kind: "unauthorized" })).toContain("invalid")
expect(formatBalanceError({ kind: "network" })).toContain("network")
expect(formatBalanceError({ kind: "missing-header", status: 400 })).toContain("400")
expect(formatBalanceError({ kind: "no-credential", reason: "missing" })).toContain("GreenPT")
})
})
describe("readFoldOpen", () => {
it("defaults to open when the KV store is absent", () => {
expect(readFoldOpen(undefined)).toBe(true)
})
it("reads a persisted boolean", () => {
expect(readFoldOpen({ get: () => false })).toBe(false)
})
it("falls back when the stored value is not a boolean", () => {
expect(readFoldOpen({ get: () => "nope" })).toBe(true)
})
it("survives a throwing KV store", () => {
expect(
readFoldOpen({
get: () => {
throw new Error("kv down")
},
}),
).toBe(true)
})
})

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import { describe, expect, it } from "vitest"
import { fetchBalance } from "../src/balance"
import { DEFAULT_BASE_URL } from "../src/store"
const apiKey = process.env.GREENPT_API_KEY
const enabled = process.env.GREENPT_INTEGRATION === "1" && typeof apiKey === "string" && apiKey.length > 0
const suite = enabled ? describe : describe.skip
suite("GreenPT live API", () => {
it("returns a finite balance from the free HEAD probe", async () => {
const result = await fetchBalance(DEFAULT_BASE_URL, apiKey as string)
if ("kind" in result) {
throw new Error(`expected a balance, got error: ${result.kind}`)
}
expect(Number.isFinite(result.credits)).toBe(true)
expect(result.credits).toBeGreaterThanOrEqual(0)
})
it("reports unauthorized for an invalid key", async () => {
const result = await fetchBalance(DEFAULT_BASE_URL, "sk-definitely-invalid")
expect(result).toEqual({ kind: "unauthorized" })
})
})

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{
"compilerOptions": {
"target": "ESNext",
"module": "ESNext",
"moduleResolution": "bundler",
"jsx": "react-jsx",
"jsxImportSource": "@opentui/solid",
"strict": true,
"noEmit": true,
"noUncheckedIndexedAccess": true,
"skipLibCheck": true,
"verbatimModuleSyntax": true,
"types": ["node"]
},
"include": ["src", "test"]
}