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headroom/plugins/opencode/package.json

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feat: headroom wrap opencode / unwrap opencode CLI (#1105) ## Summary This PR implements transparent `headroom wrap opencode` support without asking users to edit OpenCode provider URLs, choose an extra CLI flag, or maintain a static provider list. The wrapper now lives at the runtime transport boundary: OpenCode keeps its user/provider config, while Headroom intercepts outbound provider traffic in-process and routes it through the local Headroom proxy. ## What changed ### Transparent OpenCode wrapping - `headroom wrap opencode` injects the `headroom-opencode` plugin through `OPENCODE_CONFIG_CONTENT`. - Existing OpenCode provider URLs are preserved. We do not rewrite user config URLs to point at Headroom. - Existing `OPENAI_BASE_URL` and `ANTHROPIC_BASE_URL` env vars are preserved. - Local OpenCode traffic, localhost traffic, and Headroom proxy traffic bypass the shim to avoid loops. ### Runtime transport interception - Added an OpenCode plugin transport shim that wraps: - `globalThis.fetch` - `http.request` / `http.get` - `https.request` / `https.get` - External provider calls are routed to the local Headroom proxy. - The original upstream origin is passed through `x-headroom-base-url`, so the proxy can forward to the real provider without changing OpenCode config. - External `http2.connect` is blocked loudly instead of allowing direct provider traffic to leak outside Headroom. ### Live provider additions Provider coverage is no longer based on a static config scan. Because routing happens at outbound request time, providers added mid-session are routed through Headroom automatically as long as they use the covered Node transport paths. ### Subagent and child-process coverage - The parent OpenCode plugin sets a packaged Node preload shim through `NODE_OPTIONS=--import=.../hook-shim/handler.js`. - The transport shim patches `child_process.spawn`, `exec`, `execFile`, and `fork` so child Node processes receive the Headroom preload even when OpenCode passes a custom `env`. - The child-process shim fails closed if it loads without `HEADROOM_OPENCODE_TRANSPORT_PROXY_URL`. - This closes the subagent leak path where a child Node process could otherwise start without Headroom transport interception. ## Why this goes beyond PR #1089 PR #1089 improves OpenCode provider registration, but it still focuses on provider config shape. This PR moves the enforcement boundary to runtime transport interception. This PR goes further because: - No provider URL rewriting is required. - New providers added mid-session are covered automatically. - Subagents and child Node processes inherit the Headroom transport shim. - Direct external HTTP/2 paths fail loudly instead of leaking. - The wrap remains transparent to the user's OpenCode provider config. - The wrapper is fail-closed for unsupported child-process preload state. ## Additional robustness fixes While validating the change in Docker, the full Python suite exposed unrelated Linux/container robustness issues. These are fixed in this PR so the suite is green: - Binary cache handling now treats cache paths under a non-writable existing parent as unavailable, including when tests run as root in Docker. - `release_version.py` honors `MANUAL_VER` before git calls so direct script execution works outside a `.git` checkout. - Test logger isolation now resets relevant Headroom child loggers so proxy logging setup cannot poison later `caplog` tests. - The scanner missing-path test now uses a guaranteed missing `tmp_path` child instead of relying on `/nonexistent/path`. ## Validation All implementation validation was run inside Docker. - Full Python suite from a fresh Docker copy: `6605 passed, 523 skipped`. - Ruff on changed Python/OpenCode paths: passed. - OpenCode plugin typecheck: passed. - OpenCode plugin tests: `9 passed`. - OpenCode plugin build: passed. - Hook shim preload smoke test: passed. ## Notes This PR intentionally does not add a CLI option. `headroom wrap opencode` means full wrap. Either Headroom wraps OpenCode transparently, or the path fails loudly instead of silently leaking provider traffic. --------- Co-authored-by: Rudimar Ronsoni <6081613+rudironsoni@users.noreply.github.com>
2026-06-22 18:07:12 +02:00
{
"name": "headroom-opencode",
"version": "0.1.0",
"description": "Headroom proxy integration plugin for OpenCode - routes LLM traffic through the Headroom proxy for token compression",
"type": "module",
"main": "./dist/index.js",
"types": "./dist/index.d.ts",
"files": [
"dist",
"hook-shim",
"README.md"
],
"scripts": {
"build": "tsup",
"test": "vitest run",
"test:watch": "vitest",
"typecheck": "tsc --noEmit"
},
"dependencies": {
"@opencode-ai/plugin": "^1.17.8",
"headroom-ai": "^0.22.3"
},
"peerDependencies": {
"@ai-sdk/openai-compatible": "*",
"@ai-sdk/provider": "*",
"ai": "*"
},
"peerDependenciesMeta": {
"@ai-sdk/openai-compatible": {
"optional": true
},
"@ai-sdk/provider": {
"optional": true
},
"ai": {
"optional": true
}
},
"devDependencies": {
"@types/node": "^22.10.0",
"tsup": "^8.0.0",
"typescript": "^5.5.0",
"vitest": "^4.1.5"
},
"license": "Apache-2.0"
}
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