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 skills add jxoesneon/Ciel --skill api_clientgit 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/api_client)<a href="https://agentmods.dev/skills/jxoesneon/ciel/api_client"><img src="https://agentmods.dev/badge/skills/jxoesneon/ciel/api_client/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/jxoesneon/ciel/api_client"><img src="https://agentmods.dev/badge/skills/jxoesneon/ciel/api_client.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00019 | $0.00343 |
| Opus 5.5 | $0.00008 | $0.00137 |
| Sonnet 5.5 | $0.00004 | $0.00069 |
| Haiku 4.5 | $0.00002 | $0.00034 |
Grade A, and why
api_client 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 1mo 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
api_client
HTTP REST / GraphQL client with auth and retry.
Operations
api.request(method, url, headers?, body?, auth?)api.graphql(endpoint, query, vars?, auth?)api.with_retry(call, strategy)— exponential backoff, idempotency keys.
Auth
Auth credentials pulled via secrets_manager/SKILL.md by name — never inline. Bearer, Basic, OAuth2, API-key header, HMAC.
I/O Contract
io_contract:
input: { method, url, "headers?", "body?", "auth_ref?" }
output: { status, body, headers }
idempotent: depends_on_method
side_effects: [network]
Safety
- State-mutating methods (POST/PUT/PATCH/DELETE) to external endpoints are at least mid-risk.
- Sending to internal / production endpoints is high/critical.
- Request/response bodies stored hashed, not raw, for audit.
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.
- 1mo ago First seen · 42 lines · 19 tokens per session scan A a4edda841061
api_client is a skill published in the GitHub repository jxoesneon/Ciel (1 stars, last pushed 2d ago), licensed Apache-2.0. It adds 19 tokens to every session and 343 once invoked, about $0.0001 per session on Opus 5.5. 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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