Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/timmy6942025/opencode-builder-skill/opencode-confignpx skills add Timmy6942025/opencode-builder-skill --skill opencode-configgit clone --depth 1 https://github.com/Timmy6942025/opencode-builder-skillWhat 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 | $0.00070 | $0.11451 |
| Opus 5 | $0.00035 | $0.05726 |
| Sonnet 5 | $0.00014 | $0.02290 |
| Haiku 4.5 | $0.00007 | $0.01145 |
Grade E, and why
opencode-config scanned grade E with 2 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 yesterday.
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.
Reaches for credential fileshighPrivilege escalation
SSH keys, cloud credentials, git-credentials, .npmrc, /etc/shadow: reading these is how a config file becomes a credential leak.
| `profile` | AWS named profile from `~/.aws/credentials` (defaults to `AWS_PROFILE` env var). | Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
<key>rm -rf *</key> How it starts
The opening of the file, as written. The whole thing — 1,418 lines — stays where its author put it; the contents beside it link to each section on GitHub.
OpenCode Configuration
📚 Official Docs: For the latest information, always refer to the official documentation: https://opencode.ai/docs/config/
OpenCode uses JSON-based configuration files to control runtime behavior, TUI appearance, server settings, tool permissions, agent definitions, and provider connections. This skill covers every aspect of configuration: file format, locations, precedence, merging, all available fields, TUI config, variable substitution, enterprise managed settings, environment variables, and troubleshooting.
Table of Contents
- Format
- Config Locations & Precedence
- Config Merging Behavior
- All Config Fields
- TUI Config (tui.json)
- Variable Substitution
- Managed Settings (Enterprise)
- Provider-Specific Options
- Environment Variables
- Debugging & Verification
- Troubleshooting
Format
OpenCode supports both JSON and JSONC (JSON with Comments) formats for all configuration files.
Schema
Every config file should include a $schema field for editor validation and autocomplete:
- Server/runtime config:
"$schema": "https://opencode.ai/config.json" - TUI config:
"$schema": "https://opencode.ai/tui.json"
{
"$schema": "https://opencode.ai/config.json",
"model": "anthropic/claude-sonnet-4-5",
"autoupdate": true,
"server": {
"port": 4096
}
}
Schemas enable autocompletion in VS Code, JetBrains editors, and other JSON-aware editors. Omitting the schema is valid but not recommended.
Config Locations & Precedence
Configuration files are merged together, not replaced. Settings from multiple locations are combined. Later sources override earlier ones only for conflicting keys. Non-conflicting settings from all configs are preserved.
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.
- yesterday First seen · 1,418 lines · 70 tokens per session scan E d962e1422abe
opencode-config is a skill published in the GitHub repository Timmy6942025/opencode-builder-skill (2 stars, last pushed 3mo ago), licensed MIT. It adds 70 tokens to every session and 11,451 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it E with 2 findings (reaches for credential files, recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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