ncbi-eutilities-assistant
Query NCBI Entrez databases through official E-utilities with deterministic search, summary, fetch, link, and history workflows.
Skill by Scientific-Tooling
Install
Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.
npx agentmarket install skill/scientific-tooling-ncbi-eutilities-assistant
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About
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What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.
- Tools
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- Secrets
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- Install scripts
- None found
- Runs as
- Python package
Network hosts it talks to 1
codeload.github.com· found in install command
Files it touches
~/.claude/skills/ncbi-eutilities-assistant
What's inside
- Skill name
ncbi-eutilities-assistant- Description
- Query NCBI Entrez databases through official E-utilities with deterministic search, summary, fetch, link, and history workflows.
- License
- MIT
- Instructions
- 118 lines in SKILL.md · view on GitHub
Before installing
- Ships executable scripts
Files (10)
- SKILL.md
- README.md · agents/
- claude.yaml · agents/
- openai.yaml · agents/
- .gitkeep · assets/
- config.yaml
- README.md · references/
- eutilities-reference.md · references/
- eutils_cli.py · scripts/
- run.sh · scripts/
SKILL.md (first lines)
# Skill: NCBI E-utilities Assistant
## Use When
- A user wants to query NCBI Entrez databases such as `pubmed`, `gene`, `protein`, `nuccore`, `assembly`, or `snp` through the official E-utilities API.
- A user needs deterministic command-line access to `einfo`, `esearch`, `esummary`, `efetch`, `elink`, or `epost`.
- A user wants a higher-level PubMed workflow that searches, summarizes, and optionally fetches abstracts/full records in one command.
- A user wants a PubMed literature-review workflow that extracts titles, abstracts, authors, MeSH terms, keywords, and article IDs into structured JSON/JSONL.
- A user wants a time-bounded PubMed research update brief, such as "show me the last 7 days of CRISPR progress" or "summarize the last month of base editing papers."
- A user wants to retrieve records in batches, page through results, or use the Entrez History server (`WebEnv` + `query_key`) instead of issuing one request per ID.
- A user wants the exact request URL, method, and parameters before making the network call.
## Inputs
- Required:
- target endpoint: `info`, `search`, `summary`, `fetch`, `link`, or `post`
- target database, such as `pubmed`, `gene`, `protein`, `nuccore`, or another Entrez database
- one of:
- search term for `search`
- ID list or ID file for `summary`, `fetch`, `link`, and `post`
- `WebEnv` + `query_key` for history-based `summary`, `fetch`, and `link`
- Optional:
- for the high-level PubMed flow:
- search term
- output directory
- whether to run `efetch`
- `efetch` `retmode` / `rettype`, defaulting to PubMed abstract-oriented retrieval
- for the PubMed review flow:
- search term
- output directory
- optional date and sort filters
- optional explicit `records.json` / `records.jsonl` output paths
- for the PubMed update brief flow:
- topic term, such as `CRISPR`, `base editing`, or `prime editing`
- relative date window such as 7 or 30 days, or explicit date range
- maximum number of papers to include
- output directory and optional markdown brief path
- `email`, `tool`, and `api_key`
- `retmode`, `rettype`, `retmax`, `retstart`, `sort`, and date filters
- output path
- `--dry-run` to print the exact request plan without making the network call
## Workflow
1. Read [eutilities-reference.md](references/eutilities-reference.md) when endpoint semantics or limits are uncertain.
2. Translate the request into one of the deterministic wrapper commands:
- `scripts/run.sh info`
- `scripts/run.sh search`
- `scripts/run.sh summary`
- `scripts/run.sh fetch`
- `scripts/run.sh link`
- `scripts/run.sh post`
- `scripts/run.sh pubmed-workflow`
- `scripts/run.sh pubmed-review`
- `scripts/run.sh pubmed-update-brief`
3. Include `--email` whenever available. Keep `--tool` set unless the user has a strong reason to override it. Include `--api-key` when higher request throughput is needed.
4. Prefer `search --usehistory y` for large result sets, then continue with `summary` or `fetch` using `--webenv` and `--query-key`.
5. For PubMed-first tasks, prefer `pubmed-workflow` over hand-building three separate commands unless the user explicitly wants raw endpoint-level control.
6. For literature-review preparation, prefer `pubmed-review`; it performs PubMed retrieval and extracts structured records from `efetch` XML.
7. For recurring "latest progress" requests, prefer `pubmed-update-brief`; it writes a deterministic `brief.md` draft plus the raw retrieval artifacts.
8. Use `--dry-run` before live calls when the user wants to inspect or approve the request shape.
9. For long ID lists or `--id-file`, let the script auto-select `POST`.
10. Report the exact command, endpoint, database, key parameters, and where the response was written.
## Output Contract
- Exact command(s) run
- Endpoint name and target database(s)
- Key request parameters:
- search term, IDs, or history parameters
- `retmode` / `rettype`
- paging controls such as `retmax` and `retstart`
- Response destination:
- inline output summary, or
- saved file path
- For `pubmed-workflow`:
- `esearch.json`
- `esummary.json` when hits are returned
- `efetch.*` when `--include-fetch yes`
- `manifest.json` describing counts, IDs, `WebEnv`, `query_key`, and output paths
- For `pubmed-review`:
- `esearch.json`
- `esummary.json`
- `efetch.xml`
- `records.json`
- `records.jsonl`
- `manifest.json`
- For `pubmed-update-brief`:
- `esearch.json`
- `esummary.json`
- `efetch.xml`
- `records.json`
- `records.jsonl`
- `brief.md`
- `manifest.json`
- For history workflows:
- whether the response contains `WebEnv` / `query_key`
- the recommended next command
- When `--dry-run` is used:
- request method
- request URL
- request body when applicable
## Limits
- This skill depends on live access to `https://eutils.ncbi.nlm.nih.gov/entrez/eutils/`.
- NCBI recommends no more than 3 requests per second without an API key, and up to 10 requests per second by default with an API key.
- `EFetch` output formats vary by database; `retmode` and `rettype` must match what the target database supports.
- JSON output is not uniformly available for every endpoint/database combination, so XML or text may still be required.
- Common failure cases:
- missing or wrong `db`
- providing IDs when the workflow should use `WebEnv` + `query_key`, or vice versa
- omitting `email` / `tool` in repeated or high-volume use
- exceeding NCBI rate limits
- assuming `retmode=json` is available for every request
- trying to retrieve large result sets one ID at a time instead of using historyFrom Scientific-Tooling/structured-intelligence, MIT.
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Signals
- Stars
- 4
- Forks
- 1
- Open issues
- 0
- Last commit (this folder)
- Mar 11, 2026 (7 months ago)
From GitHub (fetched Oct 24, 2026).
Details
- License
- MIT
- First seen
- Oct 24, 2026
- Last checked
- Oct 24, 2026
- Source
- GitHubgithub-graphql
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Cite this page
ncbi-eutilities-assistant skill. Agent Mart. https://agentmart.dev/skills/scientific-tooling-ncbi-eutilities-assistant (last updated 2026-10-24)