Apache XTable is a converter that lets data move between lakehouse table formats such as Apache Hudi, Apache Iceberg, and Delta Lake. It helps data-processing systems and query engines use data written in another supported format.
Borrowing it
Nothing to install: this file belongs to apache/incubator-xtable. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/apache/incubator-xtable/main/AGENTS.mdgit clone --depth 1 https://github.com/apache/incubator-xtableWrote 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/instructions/apache/incubator-xtable/agents-md)<a href="https://agentmods.dev/instructions/apache/incubator-xtable/agents-md"><img src="https://agentmods.dev/badge/instructions/apache/incubator-xtable/agents-md/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/instructions/apache/incubator-xtable/agents-md"><img src="https://agentmods.dev/badge/instructions/apache/incubator-xtable/agents-md.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 | $0.01870 | $0.01870 |
| Opus 5.5 | $0.00748 | $0.00748 |
| Sonnet 5.5 | $0.00374 | $0.00374 |
| Haiku 4.5 | $0.00187 | $0.00187 |
Grade A, and why
incubator-xtable AGENTS.md 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 2d 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 — 209 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Apache XTable Agent Guide
This file gives repository-specific instructions for agents working in this repo.
Scope
- Applies to the whole repository unless a deeper
AGENTS.mdis added later.
Repo Structure
xtable-api: shared public interfaces and SPI contracts.xtable-core: core conversion logic, sync flow, and common implementation code.xtable-hudi-support: Hudi-specific support modules, including shaded extensions underxtable-hudi-support-extensions.xtable-utilities: bundled CLI and shaded distribution jar.xtable-aws: AWS-related shaded support dependencies.xtable-hive-metastore: Hive Metastore shaded support dependencies.xtable-service: service-layer code.release/scripts: release and compliance automation, including shaded license tooling.specandrfc: design docs and proposal material.website: project site content.
When changing code, prefer to work in the narrowest module that owns the behavior. If a change crosses module boundaries, verify all affected modules instead of only the top-level caller.
Common Validation
Use Java 11 for local Maven work.
Common commands:
./mvnw test
./mvnw verify
./mvnw spotless:check
./mvnw spotless:apply
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.
- 2d ago Changed · +2 lines · +70 tokens per session 5456932959f4
- 3d ago Changed · +1 lines · +49 tokens per session e06c880c431c
- 7d ago Changed · +4 lines · +60 tokens per session c1530762d809
- 2mo ago First seen · 202 lines · 1,691 tokens per session scan A ed5afda0b71f
incubator-xtable AGENTS.md is an instructions file published in the GitHub repository apache/incubator-xtable (1,326 stars, last pushed yesterday), licensed Apache-2.0. It adds 1,870 tokens to every session, about $0.0075 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.
incubator-xtable AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| incubator-xtable AGENTS.mdapache/incubator-xtable | Instructions file | 1.3k | yesterday | Apache-2.0 | A | 1,870 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |