Xberg is a document-intelligence engine that reads files, URLs, archives, and source trees and extracts text, metadata, images, tables, and structured data, with additional code-language understanding. Developers use it through language bindings, a command-line tool, REST API, or MCP server, and the catalogue entries support those integrations.
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 xberg-io/xberg --skill polyrepo-boundariesgit clone --depth 1 https://github.com/xberg-io/xbergWrote 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/xberg-io/xberg/polyrepo-boundaries)<a href="https://agentmods.dev/skills/xberg-io/xberg/polyrepo-boundaries"><img src="https://agentmods.dev/badge/skills/xberg-io/xberg/polyrepo-boundaries/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/xberg-io/xberg/polyrepo-boundaries"><img src="https://agentmods.dev/badge/skills/xberg-io/xberg/polyrepo-boundaries.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00028 | $0.00442 |
| Opus 5.5 | $0.00011 | $0.00177 |
| Sonnet 5.5 | $0.00006 | $0.00088 |
| Haiku 4.5 | $0.00003 | $0.00044 |
Grade A, and why
polyrepo-boundaries 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 today.
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
Polyrepo boundaries
Each sibling under the workspace root is an independent Git repository with its own history, release, CI, and governance. Pushing Xberg does not publish a sibling dependency.
Ownership
xberg: reusable Rust document-intelligence primitives, public Rust API, CLI/server surfaces, bindings, and Xberg CI/release packaging.xberg-enterprise: product and deployment behavior that consumes Xberg. Check it before removing or reshaping Rust primitives, even when the symbol is not exposed in language bindings.alef: binding, documentation, snippet, and e2e generation defects. Work around a generator defect in Xberg only when necessary; report and fix the reusable cause in Alef.liter-llm: reusable LLM client behavior, provider request construction, endpoint validation, and network-security controls owned by that client.crawlberg: crawling, URL retrieval, and crawler-specific network policy. Put SSRF protection at the component that performs the outbound request; callers may add stricter policy but cannot replace the transport boundary.sceptre: reusable Sceptre OCR models/runtime. Xberg owns its adapter, configuration, and integration behavior.
API placement
Keep reusable primitives in the Rust crate when enterprise or Rust callers need them. Bindings should expose a primitive only when it forms a coherent supported language API; Rust-only public functionality does not need an FFI wrapper. Compatibility and deprecation policy applies to public APIs, not private internals.
For a cross-repo fix, identify the lowest owning layer, coordinate the dependency/release order, and verify each repository independently. Commit and publish the dependency before updating a consumer to a version that contains the fix.
What ships with it
1 file 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.
- today Changed · -1 lines · -12 tokens per session 05ecd05d84c8
- yesterday Changed · -17 tokens per session bff103e13e02
- 16d ago Changed · +3 lines · -5 tokens per session 6b3db0c605f1
- 1mo ago First seen · 38 lines · 62 tokens per session scan A 6f8627347627
polyrepo-boundaries is a skill published in the GitHub repository xberg-io/xberg (9,455 stars, last pushed today), licensed MIT. It adds 28 tokens to every session and 442 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 2026-08-30.
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