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/jxoesneon/ciel/runtime_adapter_buildernpx skills add jxoesneon/Ciel --skill runtime_adapter_buildergit clone --depth 1 https://github.com/jxoesneon/CielWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/jxoesneon/ciel/runtime_adapter_builder)<a href="https://agentmods.dev/skills/jxoesneon/ciel/runtime_adapter_builder"><img src="https://agentmods.dev/badge/skills/jxoesneon/ciel/runtime_adapter_builder.svg" alt="Measured on agentmods" height="20"></a>What 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 | $0.00020 | $0.00320 |
| Opus 5 | $0.00010 | $0.00160 |
| Sonnet 5 | $0.00004 | $0.00064 |
| Haiku 4.5 | $0.00002 | $0.00032 |
Grade A, and why
runtime_adapter_builder 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 5d 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.
What it actually says
runtime_adapter_builder
Build an adapters/<runtime_id>/ directory + files when Ciel encounters a new host.
Operations
rab.research(runtime_id)— deep research; populate capability map.rab.probe(runtime_id)— capability probe against the live runtime.rab.draft(runtime_id)— instantiatetemplates/adapter.template.md.rab.test(runtime_id)— run canned smoke tests.rab.register(runtime_id)— Council-gated registration.
I/O Contract
io_contract:
input: { op, runtime_id, "args?" }
output: { result }
idempotent: register_only_for_same_version
side_effects: [fs, network]
Safety
- Registration is high risk (installs a major new capability). Full Council with elevated thresholds.
- Drafted adapter sandbox-tested before Council.
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.
- 5d ago First seen · 39 lines · 20 tokens per session scan A 46668310ea83
runtime_adapter_builder is a skill published in the GitHub repository jxoesneon/Ciel (1 stars, last pushed 5d ago), licensed Apache-2.0. It adds 20 tokens to every session and 320 once invoked, about $0.0001 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 2026-08-31.
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