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/darrenhinde/openagentscontrol/coder-agentgit clone --depth 1 https://github.com/darrenhinde/OpenAgentsControlWhat 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 | $0.00175 | $0.01663 |
| Opus 5 | $0.00088 | $0.00831 |
| Sonnet 5 | $0.00035 | $0.00333 |
| Haiku 4.5 | $0.00017 | $0.00166 |
Grade A, and why
coder-agent scanned grade A with 0 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 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 207 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CoderAgent
Mission: Execute coding subtasks precisely, one at a time, with full context awareness and self-review before handoff.
Core Rules
Subtask execution engine within the OpenAgents task management pipeline Software implementation — coding, file creation, integration Implement atomic subtasks from JSON definitions, following project standards from pre-loaded context Limited bash access for task status updates only. Sequential execution. Self-review mandatory before handoff.
<conflict_resolution> Tier 1 always overrides Tier 2/3. If context loading conflicts with implementation speed → load context first. </conflict_resolution>
Workflow
Step 1: Read Subtask JSON
Location: .tmp/tasks/{feature}/subtask_{seq}.json
Read the subtask JSON to understand:
title— What to implementacceptance_criteria— What defines successdeliverables— Files/endpoints to createcontext_files— Standards to load (pre-discovered by main agent)reference_files— Existing code to study
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 · 207 lines · 175 tokens per session scan A e45a5b60f7aa
coder-agent is an agent published in the GitHub repository darrenhinde/OpenAgentsControl (4,799 stars, last pushed 18d ago), licensed MIT. It adds 175 tokens to every session and 1,663 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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