# Doi2bib

> Fetches a BibTeX citation for a given DOI using doi.org content negotiation.

- Skill: `softnanolab/doi2bib` (Agent Skill)
- Install (CLI): `npx skillmds@latest add softnanolab/doi2bib`
- Raw SKILL.md: https://api.skillmd.com/api/skills/softnanolab/doi2bib/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Research & Search, Citations & References
- Tags: Bibtex, Citation, Curl, Doi
- Author: softnanolab (https://skillmd.com/u/softnanolab)
- Updated: 2026-08-22
- Page: https://skillmd.com/skills/softnanolab/doi2bib

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# doi2bib

Resolve a DOI to its BibTeX entry using the doi.org content negotiation endpoint.

## Input

<doi>
$ARGUMENTS
</doi>

If no DOI is provided, ask the user for one. Accept either the bare DOI
(`10.1038/nature12373`) or a full URL (`https://doi.org/10.1038/nature12373`);
strip the URL prefix before making the request.

## How to Use

```bash
curl -s -L --max-time 10 -H "Accept: text/bibliography; style=bibtex" "https://doi.org/<DOI>"
```

- `-L` follows the redirect from doi.org to the publisher's Crossref/DataCite
  record.
- `--max-time 10` caps the request so a stalled publisher endpoint doesn't
  block the agent turn.
- The `Accept` header asks the resolver to return a BibTeX-formatted citation
  instead of the landing page.
- Quote the URL to protect any `&` or `;` characters in the DOI.

## Output

Return the raw BibTeX verbatim inside a ```bibtex code block so the user can
paste it straight into a `.bib` file. Do not reformat the entry or rename the
citation key unless the user asks.

## Error handling

If the response is empty, an HTML page, or a curl error, tell the user the DOI
could not be resolved and show what came back so they can diagnose (typo,
unregistered DOI, publisher not supporting BibTeX negotiation).