--- title: "Undominated · A dev POST keeps its slash: review, setup & limitations · Undominated.ai" canonical: https://undominated.ai/skills/undominated-slash-not-post/ description: "Refuse a dev POST path with no trailing slash. trailingSlash always 404s that path in dev. Production is a different path shape." --- # Undominated · A dev POST keeps its slash: review, setup & limitations · Undominated.ai > Refuse a dev POST path with no trailing slash. trailingSlash always 404s that path in dev. Production is a different path shape. [← Explore all skills](/skills/) EVIDENCE AND EVALUATION / Undominated.ai # Undominated · A dev POST keeps its slash Refuse a dev POST path with no trailing slash. trailingSlash always 404s that path in dev. Production is a different path shape. [See setup guidance ↓](#setup)[Original source ↗](https://undominated.ai/resources/skills/undominated-slash-not-post/definition.md) SOURCE REVIEW Reviewed 2026-10-14 Evidence 3 linked sources Publisher Undominated.ai Licence [MIT ↗](https://undominated.ai/resources/skills/undominated-slash-not-post/LICENSE.txt) Revision 9b4807766cac [Read what was—and wasn’t—checked ↓](#review) “Refuse a dev POST path with no trailing slash. trailingSlash always 404s that path in dev. Production is a different path shape.” [Undominated.ai · upstream description ↗](https://undominated.ai/resources/skills/undominated-slash-not-post/definition.md) Our analysis follows below. 01 / THE REASONING ## Why this made the selection. - Pairs a bounded workflow with an offline Python checker and explicitly synthetic example inputs. - Created for recurring evidence and comparison failures: missing facts remain unknown and every conclusion keeps its scope. - It names a concrete failure mode: A production path without a slash can pass. This checker sends no request. ### A good fit for - A dev client is about to POST a companion path without a trailing slash. - Use when a dev client is about to POST a companion path without a trailing slash. ### Weigh up before choosing - A production path without a slash can pass. This checker sends no request. - Fixture checks establish the documented local behaviour, not performance on an unrestricted set of real tasks. - Public GitHub source availability is not yet verified; the complete download contains the reviewed source. - A new npm install path is not yet verified. Use the complete source download. - `examples/synthetic.json` passes. The other examples are a refusal and invalid input. 02 / THE REVIEW RECORD ## What we actually inspected. Source review has boundaries. A clear record is more useful than a “safe” badge. ### Material inspected - skills/undominated-slash-not-post/SKILL.md - skills/undominated-slash-not-post/scripts/check.py - skills/undominated-slash-not-post/examples/synthetic.json ### Our findings - First-party resource authored by Undominated.ai; this is our own verification record, not an independent endorsement. - The download preserves the complete source and supporting files. Its manifest hashes identify the exact bytes. - The checker names its required fields as: fields(data, ("environment", "trailingSlash")). - One condition that blocks a pass is: a dev POST keeps the trailing slash; this checker sends no request. ### Not established by this review - Model compliance with these instructions on arbitrary tasks - Native integration in every agent host - Public GitHub source identity - Remote installation through the standard Skills CLI - The new npm resource CLI installation The review applies to the material and revision named here. A newer upstream release can change its behavior. 03 / PUT IT TO WORK ## Add a skill to your workflow. [Upstream setup instructions ↗](https://undominated.ai/resources/skills/undominated-slash-not-post/definition.md) - Download the complete bundle from https://undominated.ai/resources/skills/undominated-slash-not-post/bundle.zip and extract it into a new directory. - Place the extracted directory at .agents/skills/undominated-slash-not-post/ or your host's documented skills directory. Preserve SKILL.md, scripts, examples and licence files together. - Run the documented synthetic example from the skill directory with Python 3.10 or later before using your own evidence. ### Before you start - An Agent Skills compatible host - Python 3.10 or later for the optional checker ### Compatibility Agent Skills compatible hosts · Python 3.10+ ### Implementation Python · Markdown ### Local, explicit inputs - read:user-selected-local-file ### Cost model MIT source at no charge. Your agent host or model provider may charge for use; the included offline checks require no paid API. THE COMPLETE REVIEWED DEFINITION ## Read it before you reuse it. Original source bytes, with attribution. Review the host-specific setup notes above. Copy definition ↗ [Download complete resource + licence ↗](/resources/skills/undominated-slash-not-post/bundle.zip)[Raw Markdown ↗](/resources/skills/undominated-slash-not-post/definition.md) --- name: undominated-slash-not-post description: Refuse a dev POST path with no trailing slash. trailingSlash always 404s that path in dev. Production is a different path shape. license: MIT metadata: author: Undominated.ai version: "1.0.0" --- # A dev POST keeps its slash Use when a dev client is about to POST a companion path without a trailing slash. 1. Read only the fields this checker names. 2. A review is a refusal. A pass stays inside the scope line. 3. Examples are synthetic. They are not a vendor quote, a rank, or a live page. ## Deliverable and limits A production path without a slash can pass. This checker sends no request. `examples/synthetic.json` passes. The other examples are a refusal and invalid input. ## Run the local check Resolve paths relative to this skill directory: ```sh python3 scripts/check.py examples/synthetic.json python3 scripts/check.py /absolute/path/to/your-input.json ``` The examples are **synthetic**, not a vendor quote or a live page. Python 3.10+; standard library only. The script reads one explicit UTF-8 JSON file, prints JSON and makes no network requests or file writes. Exit codes: `0` consistency check passed, `1` review required, `2` invalid input. CLI argument and malformed-input errors return structured JSON; `--help` displays usage text. Unknown or duplicate JSON fields, non-JSON constants and invalid types are rejected. Files are limited to 1 MiB. This source-only skill is **not included in undominated-check@0.4.0**. Keep `SKILL.md`, the checker, examples and MIT licence together. A pass validates the bounded supplied-input contract, not production suitability or permission to publish. The skill does not authorize external actions. The download contains SKILL.md . Extract the whole bundle; the supporting files are required. Inspect the included MANIFEST.json for file hashes. By **Undominated.ai**. [Exact upstream source ↗](https://undominated.ai/resources/skills/undominated-slash-not-post/definition.md) · [Licence](/resources/skills/undominated-slash-not-post/LICENSE.txt) · [Attribution](/resources/skills/undominated-slash-not-post/ATTRIBUTION.txt) SHA-256 9b4807766cacbb9cf4012671c214328483e30b06780cdaeb44b1135d03e0f343 Read the applicable licence MIT License Copyright (c) 2026 Undominated.ai Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 04 / FOLLOW THE EVIDENCE ## The source trail. Our notes are separate from the original resource. Check upstream before adopting a new version. - [Original Undominated definition ↗](https://undominated.ai/resources/skills/undominated-slash-not-post/definition.md) Checked 2026-10-07 https://undominated.ai/resources/skills/undominated-slash-not-post/definition.md Supports: Workflow and input requirements, Stated limitations - [MIT licence ↗](https://undominated.ai/resources/skills/undominated-slash-not-post/LICENSE.txt) Checked 2026-10-07 https://undominated.ai/resources/skills/undominated-slash-not-post/LICENSE.txt Supports: Redistribution terms and attribution - [Complete source bundle ↗](https://undominated.ai/resources/skills/undominated-slash-not-post/bundle.zip) Checked 2026-10-07 https://undominated.ai/resources/skills/undominated-slash-not-post/bundle.zip Supports: Full local source, supporting files and integrity manifest KEEP COMPARING ## Other approaches to consider. Related by category or shared topics. These are alternatives to inspect, not a measured quality order. [### Discernment Nudge ↗ Anthropic skill that, at most once in a conversation, appends two or three short questions after a substantive answer so the user can check a fact, a reasoning step, or missing context.](/skills/anthropics-discernment-nudge/)[### Undominated · 2-bit activation outlier audit ↗ Audits 2-bit weight quantization (QuIP#, AQLM) activation outlier preservation and SQNR thresholds.](/skills/undominated-2bit-activation-outlier-audit/)[### Undominated · A load return is not the catalogue ↗ Refuse a load() return labelled catalogue. The catalogue is imported by the page. Putting it in the load return inlines it into every prerendered page.](/skills/undominated-load-not-catalogue/) [AI Tools ↗](/tools/)[Skills ↗](/skills/)[Agents ↗](/agents/)[MCP Servers ↗](/mcp-servers/)[Workflows ↗](/workflows/) ## Continue your investigation - [Choose a toolkit](/tools/) - [Inspect execution hosts](/agents/) - [Check tool access](/mcp-servers/) - [Check project dependencies](/check-repo/)