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 agents/rivet-dev/sandbox-agent/claudegit clone --depth 1 https://github.com/rivet-dev/sandbox-agentWhat 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 | $0.00000 | $0.02721 |
| Opus 5 | $0.00000 | $0.01360 |
| Sonnet 5 | $0.00000 | $0.00544 |
| Haiku 4.5 | $0.00000 | $0.00272 |
Grade B, and why
claude scanned grade B 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 2d 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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
- The CLI outputs: `--dangerously-skip-permissions cannot be used with root/sudo privileges for security reasons` How it starts
The opening of the file, as written. The whole thing — 341 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Claude Code Research
Research notes on Claude Code's configuration, credential discovery, and runtime behavior based on agent-jj implementation.
Overview
- Provider: Anthropic
- Execution Method: CLI subprocess (
claudecommand) - Session Persistence: Session ID (string)
- SDK: None (spawns CLI directly)
ACP Terminology (Sandbox Agent v1)
Use these terms consistently when discussing Claude's ACP path:
| Term | Meaning |
|---|---|
| ACP agent process launcher | The command used to start the ACP agent process, commonly an npx launcher script that executes claude-code-acp. |
| ACP agent process | The running ACP agent process spawned by Sandbox Agent from the launcher command. |
| ACP client | The client-visible transport handle identified by X-ACP-Connection-Id; requests and SSE are scoped to this ACP client. |
Related IDs:
- ACP client ID: value of
X-ACP-Connection-Id(transport identity). - ACP session ID:
sessionIdreturned bysession/new(conversation/session identity within ACP).
Credential Discovery
Priority Order
- User-configured credentials (passed as
ANTHROPIC_API_KEYenv var) - Environment variables:
ANTHROPIC_API_KEYorCLAUDE_API_KEY - Bootstrap extraction from config files
- OAuth fallback (Claude CLI handles internally)
Config File Locations
| Path | Description |
|---|---|
~/.claude.json.api |
API key config (highest priority) |
~/.claude.json |
General config |
~/.claude.json.nathan |
User-specific backup (custom) |
~/.claude/.credentials.json |
OAuth credentials |
~/.claude-oauth-credentials.json |
Docker mount alternative for OAuth |
API Key Field Names (checked in order)
{
"primaryApiKey": "sk-ant-...",
"apiKey": "sk-ant-...",
"anthropicApiKey": "sk-ant-...",
"customApiKey": "sk-ant-..."
}
Keys must start with sk-ant- prefix to be valid.
OAuth Structure
// ~/.claude/.credentials.json
{
"claudeAiOauth": {
"accessToken": "...",
"expiresAt": "2024-01-01T00:00:00Z"
}
}
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.
- 2d ago First seen · 341 lines · 0 tokens per session scan B e80dde5c5d86
claude is an agent published in the GitHub repository rivet-dev/sandbox-agent (1,555 stars, last pushed 2mo ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 2,721 tokens. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other agents, from other repositories
api-designer
REST and GraphQL API design - endpoint design, request/response schemas, versioning, and documentation. Use for designing new APIs or evolving existing ones.
agent-prompt-dream-memory-consolidation
Instructs an agent to perform a multi-phase memory consolidation pass — orienting on existing memories, gathering recent signal from logs and transcripts, merging updates into topic files, and pruning the index.
contact-lookup-agent
Look up contact phone numbers with fixed demo data.
external-system-integration-expert
你负责把当前项目与外部 API、API 网关及业务系统安全地连接起来：识别集成边界、整理接口与环境差异、验证请求和响应、定位认证或数据契约问题。.
Audit
Deep security + performance audit of a specific diff. Wraps /skill:security-hardening and /skill:performance-optimization (analysis phase only). Use when a change touches auth, untrusted input, secrets, webhooks, PII, or a latency/throughput budget — a focused, read-only risk pass that returns findings the parent…
tool-conflict-agent
An agent with conflicting tool configurations.