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 OpenLinkSoftware/ai-agent-skills --skill mtls-curlgit clone --depth 1 https://github.com/OpenLinkSoftware/ai-agent-skillsWrote 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/openlinksoftware/ai-agent-skills/mtls-curl)<a href="https://agentmods.dev/skills/openlinksoftware/ai-agent-skills/mtls-curl"><img src="https://agentmods.dev/badge/skills/openlinksoftware/ai-agent-skills/mtls-curl.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 5 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Data Exfiltration · line 480 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 493 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 497 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 502 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 511 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
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 | $0.00153 | $0.06068 |
| Opus 5 | $0.00077 | $0.03034 |
| Sonnet 5 | $0.00031 | $0.01214 |
| Haiku 4.5 | $0.00015 | $0.00607 |
Grade A, and why
mtls-curl scanned grade A 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 8d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
name: mtls-curl How it starts
The opening of the file, as written. The whole thing — 638 lines — stays where its author put it; the contents beside it link to each section on GitHub.
mTLS Session Skill (v1.1.0)
Executes mTLS-authenticated sessions using a PKCS#12 certificate bundle, covering two modes:
- Mode A — HTTP/HTTPS via
curl— one-shot or repeated HTTP requests against any mTLS-protected endpoint - Mode B — Virtuoso SQL via
isql— interactive SQL session authenticated by client certificate + WebID identity
Both modes guide the user through supplying (or locating) their .p12 / .pfx
file and password before executing. Never logs, echoes, or stores the
certificate password.
Execution Routing
- Local
curl(Mode A) — one-shot HTTP/HTTPS requests with client cert - Local
isql(Mode B) — interactive Virtuoso SQL session with WebID auth - Shell password elicitation —
read -sto collect the password without echo - Environment variables — accept
MTLS_PKCS12_FILE,MTLS_PKCS12_PWD,MTLS_CA_BUNDLE, andMTLS_WEBIDas pre-supplied inputs; skip elicitation when set
Mode selection: default to Mode A (curl) for HTTP endpoints; switch to
Mode B (iSQL) when the user mentions Virtuoso, iSQL, SQL session, port 1111,
or uses the -X/-T/-W flag syntax.
If the user explicitly specifies a different client (e.g., HTTPie, Python
requests, openssl s_client), follow that preference and adapt accordingly.
Step 0 — Resolve Inputs
Collect all required inputs before constructing any command. Which inputs are needed depends on the mode:
| # | Input | Mode A (curl) | Mode B (iSQL) | Source priority |
|---|---|---|---|---|
| 1 | PKCS#12 file path | required | required | Explicit arg → $MTLS_PKCS12_FILE → elicit |
| 2 | PKCS#12 password | required | required | $MTLS_PKCS12_PWD → elicit (masked) |
| 3 | Target URL | required | — | Explicit arg → elicit |
| 4 | Host:port | — | required | Explicit arg → elicit |
| 5 | CA bundle path | optional | required | Explicit arg → $MTLS_CA_BUNDLE → auto-detect → elicit |
| 6 | WebID URI | — | required | Explicit arg → $MTLS_WEBID → elicit |
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 8d ago First seen · 638 lines · 153 tokens per session scan A 2e2097ceeff2
mtls-curl is a skill published in the GitHub repository OpenLinkSoftware/ai-agent-skills (38 stars, last pushed 4d ago), licensed MIT. It adds 153 tokens to every session and 6,068 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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