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 holon-run/uxc --skill notion-openapi-skillgit clone --depth 1 https://github.com/holon-run/uxcWrote 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/holon-run/uxc/notion-openapi-skill)<a href="https://agentmods.dev/skills/holon-run/uxc/notion-openapi-skill"><img src="https://agentmods.dev/badge/skills/holon-run/uxc/notion-openapi-skill/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/holon-run/uxc/notion-openapi-skill"><img src="https://agentmods.dev/badge/skills/holon-run/uxc/notion-openapi-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 7 findings, up to high
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 →
- high Privilege Escalation · line 117 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- medium Data Exfiltration · line 15 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 47 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 92 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 144 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 152 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 226 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 | $0.00057 | $0.02319 |
| Opus 5.5 | $0.00023 | $0.00928 |
| Sonnet 5.5 | $0.00011 | $0.00464 |
| Haiku 4.5 | $0.00006 | $0.00232 |
Grade A, and why
notion-openapi-skill 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.
How it starts
The opening of the file, as written. The whole thing — 236 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Notion Public API Skill
Use this skill to run Notion Public API operations through uxc + OpenAPI.
Reuse the uxc skill for shared execution, OAuth, and error-handling guidance.
Prerequisites
uxcis installed and available inPATH.- Network access to
https://api.notion.com/v1. - Access to the curated OpenAPI schema URL:
https://raw.githubusercontent.com/holon-run/uxc/main/skills/notion-openapi-skill/references/notion-public.openapi.json
- A Notion integration token or OAuth credential with content read access.
- For writes, the integration also needs the corresponding Notion insert/update content capabilities.
Scope
This skill covers a read-first Notion REST surface focused on traversal plus common content writes:
- token identity validation
- title search for pages, data sources, and databases
- page lookup
- block lookup
- recursive traversal via block-children pagination
- page property retrieval
- page creation
- page updates, including trash/restore via
in_trash - block append
- block updates
- block deletion
- data source retrieval and query
- legacy database retrieval and query
This skill does not cover:
- full Notion REST coverage
- comments, file uploads, webhooks, page move, or schema mutation
- automatic recursive traversal loops inside one single command
Endpoint And Version
- base URL:
https://api.notion.com/v1 - required version header for this skill:
Notion-Version: 2026-03-11
The schema is intentionally curated around traversal and schema discovery. It is not a full dump of the Notion API.
Authentication
Notion Public API requires:
Authorization: Bearer <token>Notion-Version: 2026-03-11
Recommended: dedicated REST credential
If you already have an internal integration token:
uxc auth credential set notion-openapi \
--auth-type api_key \
--header "Authorization=Bearer {{secret}}" \
--header "Notion-Version=2026-03-11" \
--secret-env NOTION_API_TOKEN
uxc auth binding add \
--id notion-openapi \
--host api.notion.com \
--path-prefix /v1 \
--scheme https \
--credential notion-openapi \
--priority 100
What ships with it
4 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.
- 1mo ago First seen · 236 lines · 57 tokens per session scan A c9891dbf013b
notion-openapi-skill is a skill published in the GitHub repository holon-run/uxc (119 stars, last pushed 1mo ago), licensed MIT. It adds 57 tokens to every session and 2,319 once invoked, about $0.0002 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 2026-08-30.
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