# Elements Live

> Research intensity for 118 elements and topics, ~10M papers. Free element scores; x402 pay-per-call.

- name: com.elements-live/elements-live
- version: 2.1.0
- connection class: R0 (autonomous)
- trust: 79/100 flags: no-repository
- quality: 69/100 (needs work)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.elements-live%2Felements-live
- tools: https://api.protogrid.dev/v1/servers/com.elements-live%2Felements-live/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "elements-live": {
      "type": "http",
      "url": "https://www.elements-live.com/mcp",
      "headers": {
        "Authorization": "Bearer ${ELEMENTS_LIVE_TOKEN}"
      }
    }
  }
}
```

Placeholders to fill: `${ELEMENTS_LIVE_TOKEN}`.

## Trust

- hygiene: 80
- liveness: 97
- freshness: 100
- provenance: 45
- drivers: +dns-namespace +reachable +uptime-94% +updated-19d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 69/100 (needs work)

### protocol: 100 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- pass `protocol.list_ttl`: tool list is cacheable (ttlMs 300000)

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 64 (weight 30)

- pass `tools.descriptions`: every tool has a description
- warn `tools.description_length`: 1 tools have descriptions over 1,024 characters, which crowds the context
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: research (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); search_subjects (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_subject_ri (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 1,943 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 25 (weight 15)

- warn `stability.changes`: 28 tool changes in 30 days
- fail `stability.rug_pull`: 3 tools kept their name but changed most of their description in 30 days; review before trusting them

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 9, about 1,943 tokens to load them all
- tool set hash: 4ce0d6820eb6ce9a99289e33b051accc
- tools last changed: 2026-10-16T22:17:30.007Z
- badge: [![protogrid quality](https://protogrid.dev/badge/com.elements-live/elements-live.svg)](https://protogrid.dev/servers/com.elements-live/elements-live)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-16 `lab_run` changed (description)
  - before: Get the papers for a lab_quote: pass its quote_id and a depth (papers_20 or papers_100) to get the top papers matching the quoted filter, ranked by impact, with the curation behind each rank. Titles and metadata only, no abstracts: fetch abstracts by DOI from an abstract source (e.g. OpenAlex) when the answer depends on them. A stale or expired quote is refused. Requires a Professional+ account. Without a key, pay per call: the quoted price of the depth, less the $0.01 quote credit in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
  - after: Get the papers for a lab_quote: pass its quote_id and a depth (papers_20 or papers_100) to get the top papers matching the quoted filter, ranked by impact, with the curation behind each rank. Each paper carries its abstract where one is on file (about 6 in 10). A stale or expired quote is refused. Requires a Professional+ account. Without a key, pay per call: the quoted price of the depth, less the $0.01 quote credit in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
- 2026-10-16 `get_element_papers` changed (description)
  - before: The top papers for one element, narrowed with keyword to one of its materials or applications (e.g. symbol='Al', keyword='aluminum nitride'; the keyword must name one of the element's topics exactly, case aside -- search_subjects finds topic names). Returns title, DOI, venue, year, citations. sort=impact (default) favours recent, well-cited work; sort=foundational gives the most-cited classics; sort=newest the latest. Titles and metadata only, no abstracts: fetch abstracts by DOI from an abstract source (e.g. OpenAlex) when the answer depends on them. Requires a Personal+ account. Capped at 100 papers with no pagination. Without a key, pay per call: $0.02 for up to 20 papers, $0.10 for up to 100, in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
  - after: The top papers for one element, narrowed with keyword to one of its materials or applications (e.g. symbol='Al', keyword='aluminum nitride'; the keyword must name one of the element's topics exactly, case aside -- search_subjects finds topic names). Returns title, DOI, venue, year, citations. sort=impact (default) favours recent, well-cited work; sort=foundational gives the most-cited classics; sort=newest the latest. Each paper carries its abstract where one is on file (about 6 in 10). Requires a Personal+ account. Capped at 100 papers with no pagination. Without a key, pay per call: $0.02 for up to 20 papers, $0.10 for up to 100, in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
- 2026-10-16 `get_subject_papers` changed (description)
  - before: The top papers for one research topic (resolve it with search_subjects first) -- title, DOI, venue, year, citations. Use it when asked what to READ about a specific topic, rather than how active it is. sort=impact (default) favours recent, well-cited work; sort=foundational gives the most-cited classics; sort=newest the latest. Titles and metadata only, no abstracts: fetch abstracts by DOI from an abstract source (e.g. OpenAlex) when the answer depends on them. Requires a Personal+ account. Capped at 100 papers with no pagination. Without a key, pay per call: $0.02 for up to 20 papers, $0.10 for up to 100, in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
  - after: The top papers for one research topic (resolve it with search_subjects first) -- title, DOI, venue, year, citations. Use it when asked what to READ about a specific topic, rather than how active it is. sort=impact (default) favours recent, well-cited work; sort=foundational gives the most-cited classics; sort=newest the latest. Each paper carries its abstract where one is on file (about 6 in 10). Requires a Personal+ account. Capped at 100 papers with no pagination. Without a key, pay per call: $0.02 for up to 20 papers, $0.10 for up to 100, in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
- 2026-10-16 `research` changed (description)
  - before: CALL THIS FIRST for a literature question about chemistry, materials or physics research -- a broad one ('what matters in X') or a specific process or parameter one (a deposition condition, a property value, a defect mechanism). Send the question in plain words (q), or a paper you already know (paper: DOI or title). Returns reading lists in four lenses: relevant (the papers whose TITLE AND ABSTRACT best match the question, across the whole corpus, BM25 -- start here for a specific question), foundational (the classics the question's own papers cite most), now (highest impact, young papers' citations projected) and newest (last two years); plus the research communities and element sub-communities the question is about, with why each matched and whether it is rising. Put the question's key terms in q: filler words are ignored. unmatched_terms lists words that matched nothing; rephrase those. Each paper carries its DOI and a one-line reason. Abstracts are searched but not returned: fetch them by DOI from an abstract source (e.g. OpenAlex) when the answer depends on what a paper reports. One page = up to 10 papers per lens; ask for page 2+ only if needed. Requires a Personal+ account. Without a key, pay per call: $0.05 in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
  - after: CALL THIS FIRST for a literature question about chemistry, materials or physics research -- a broad one ('what matters in X') or a specific process or parameter one (a deposition condition, a property value, a defect mechanism). Send the question in plain words (q), or a paper you already know (paper: DOI or title). Returns reading lists in four lenses: relevant (the papers whose TITLE AND ABSTRACT best match the question, across the whole corpus, BM25 -- start here for a specific question), foundational (the classics the question's own papers cite most), now (highest impact, young papers' citations projected) and newest (last two years); plus the research communities and element sub-communities the question is about, with why each matched and whether it is rising. Put the question's key terms in q: filler words are ignored. unmatched_terms lists words that matched nothing; rephrase those. Each paper carries its DOI, a one-line reason and its abstract where one is on file. Our corpus is curated, not complete: the relevant lens also brings up to 3 of every 10 results from OpenAlex, marked source='openalex' and labelled not yet curated. One page = up to 10 papers per lens; ask for page 2+ only if needed. Requires a Personal+ account. Without a key, pay per call: $0.05 in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
- 2026-10-16 `lab_run` changed (description)
  - before: Buy a Lab quote: pass the quote_id from lab_quote and a depth (papers_20 or papers_100) to get the top papers matching the quoted query, ranked by impact, with the curation behind each rank. Priced from the quote, less the $0.01 the quote cost. A stale or expired quote is refused before any payment. Requires a Professional+ account. Without a key, pay per call: the quoted price of the depth, less the $0.01 quote credit in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
  - after: Get the papers for a lab_quote: pass its quote_id and a depth (papers_20 or papers_100) to get the top papers matching the quoted filter, ranked by impact, with the curation behind each rank. Titles and metadata only, no abstracts: fetch abstracts by DOI from an abstract source (e.g. OpenAlex) when the answer depends on them. A stale or expired quote is refused. Requires a Professional+ account. Without a key, pay per call: the quoted price of the depth, less the $0.01 quote credit in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
- 2026-10-16 `lab_quote` changed (description)
  - before: Price a research question before buying it. Send a filter in the Lab syntax: +must -exclude "exact topic" (a OR b) wild* year:2015..2026, over element symbols or names and topic names (e.g. +Li +Co "solid electrolyte" -sulfide). Returns how many papers match, by year and by research community, the nearest broader query when nothing matches, and a binding quote_id with a price for each deliverable (ranked papers, the full packet). Requires a Professional+ account. Without a key, pay per call: $0.01 in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
  - after: Scope a multi-term question with a boolean filter: +must -exclude "exact topic" (a OR b) wild* year:2015..2026, over element symbols or names and EXACT topic names (e.g. +Li +Co "solid electrolyte" -sulfide). Words that are neither are DROPPED, and wildcards can expand into unrelated fields: read `warnings` first -- it lists every dropped term with the nearest topics, every abbreviation read as a topic, and every wildcard expansion. Returns how many papers match, by year and by research community, the nearest broader query when nothing matches, and a quote_id that lab_run turns into the ranked papers. Narrow filters (two elements + one topic) work best. Requires a Professional+ account. Without a key, pay per call: $0.01 in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
- 2026-10-16 `get_element_papers` changed (description) **meaning changed**
  - before: List the top papers driving an element's RI -- title, DOI, venue, year, citations. Requires a Personal+ account. Capped at 100 papers with no pagination. Without a key, pay per call: $0.02 for up to 20 papers, $0.10 for up to 100, in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
  - after: The top papers for one element, narrowed with keyword to one of its materials or applications (e.g. symbol='Al', keyword='aluminum nitride'; the keyword must name one of the element's topics exactly, case aside -- search_subjects finds topic names). Returns title, DOI, venue, year, citations. sort=impact (default) favours recent, well-cited work; sort=foundational gives the most-cited classics; sort=newest the latest. Titles and metadata only, no abstracts: fetch abstracts by DOI from an abstract source (e.g. OpenAlex) when the answer depends on them. Requires a Personal+ account. Capped at 100 papers with no pagination. Without a key, pay per call: $0.02 for up to 20 papers, $0.10 for up to 100, in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
- 2026-10-16 `get_subject_papers` changed (description)
  - before: List the top papers driving a research topic's RI -- title, DOI, venue, year, citations. This is the grounding tool: use it when asked what to READ about a topic, rather than how active it is. Requires a Personal+ account. Capped at 100 papers with no pagination. Without a key, pay per call: $0.02 for up to 20 papers, $0.10 for up to 100, in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
  - after: The top papers for one research topic (resolve it with search_subjects first) -- title, DOI, venue, year, citations. Use it when asked what to READ about a specific topic, rather than how active it is. sort=impact (default) favours recent, well-cited work; sort=foundational gives the most-cited classics; sort=newest the latest. Titles and metadata only, no abstracts: fetch abstracts by DOI from an abstract source (e.g. OpenAlex) when the answer depends on them. Requires a Personal+ account. Capped at 100 papers with no pagination. Without a key, pay per call: $0.02 for up to 20 papers, $0.10 for up to 100, in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
- 2026-10-16 `research` changed (description, inputSchema)
  - before: CALL THIS FIRST for any literature, reading-list or 'what is important / what is moving' question about chemistry, materials or physics research. Send the question in plain words (q), or a paper you already know (paper: DOI or title). Returns the research communities and element sub-communities the question is about, with why each matched and whether it is rising, and curated reading lists in three lenses: foundational (the classics the question's own papers cite most), now (highest impact, young papers' citations projected) and newest (last two years). Each paper carries its DOI and a one-line reason. One page = up to 10 papers per lens; ask for page 2+ only if needed -- `next` says what it costs. Requires a Personal+ account. Without a key, pay per call: $0.05 in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
  - after: CALL THIS FIRST for a literature question about chemistry, materials or physics research -- a broad one ('what matters in X') or a specific process or parameter one (a deposition condition, a property value, a defect mechanism). Send the question in plain words (q), or a paper you already know (paper: DOI or title). Returns reading lists in four lenses: relevant (the papers whose TITLE AND ABSTRACT best match the question, across the whole corpus, BM25 -- start here for a specific question), foundational (the classics the question's own papers cite most), now (highest impact, young papers' citations projected) and newest (last two years); plus the research communities and element sub-communities the question is about, with why each matched and whether it is rising. Put the question's key terms in q: filler words are ignored. unmatched_terms lists words that matched nothing; rephrase those. Each paper carries its DOI and a one-line reason. Abstracts are searched but not returned: fetch them by DOI from an abstract source (e.g. OpenAlex) when the answer depends on what a paper reports. One page = up to 10 papers per lens; ask for page 2+ only if needed. Requires a Personal+ account. Without a key, pay per call: $0.05 in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
- 2026-10-15 `get_element_papers` changed (inputSchema)

Full history: https://api.protogrid.dev/v1/servers/com.elements-live%2Felements-live/changes

## Remotes

- https://www.elements-live.com/mcp (streamable-http, auth none, reachable true, uptime30d 0.9350649)

## Packages

_none_

## Tools (9)

- `get_element_papers`: The top papers for one element, narrowed with keyword to one of its materials or applications (e.g. symbol='Al', keyword='aluminum nitride'; the keyword must name one of the element's topics exactly, case aside -- search_subjects finds topic names). Returns title, DOI, venue, year, citations. sort=impact (default) favours recent, well-cited work; sort=foundational gives the most-cited classics; sort=newest the latest. Each paper carries its abstract where one is on file (about 6 in 10). Requires a Personal+ account. Capped at 100 papers with no pagination. Without a key, pay per call: $0.02 for up to 20 papers, $0.10 for up to 100, in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
- `get_element_ri`: Get current Research Intensity (RIS) for one of the 118 chemical elements, with a citation URL. No API key needed. Historical RI (HRI) is included with a Personal+ key.
- `get_subject_history`: Full yearly (or monthly) RIS/HRI history for one topic/keyword/sector. Requires a Personal+ account. Without a key, pay per call: $0.10 in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
- `get_subject_papers`: The top papers for one research topic (resolve it with search_subjects first) -- title, DOI, venue, year, citations. Use it when asked what to READ about a specific topic, rather than how active it is. sort=impact (default) favours recent, well-cited work; sort=foundational gives the most-cited classics; sort=newest the latest. Each paper carries its abstract where one is on file (about 6 in 10). Requires a Personal+ account. Capped at 100 papers with no pagination. Without a key, pay per call: $0.02 for up to 20 papers, $0.10 for up to 100, in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
- `get_subject_ri`: Get RI, RIS, HRI and paper count for one research topic/keyword/sector. Requires a Personal+ account -- call search_subjects first to resolve subject_type/subject_id. Without a key, pay per call: $0.01 in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
- `lab_quote`: Scope a multi-term question with a boolean filter: +must -exclude "exact topic" (a OR b) wild* year:2015..2026, over element symbols or names and EXACT topic names (e.g. +Li +Co "solid electrolyte" -sulfide). Words that are neither are DROPPED, and wildcards can expand into unrelated fields: read `warnings` first -- it lists every dropped term with the nearest topics, every abbreviation read as a topic, and every wildcard expansion. Returns how many papers match, by year and by research community, the nearest broader query when nothing matches, and a quote_id that lab_run turns into the ranked papers. Narrow filters (two elements + one topic) work best. Requires a Professional+ account. Without a key, pay per call: $0.01 in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
- `lab_run`: Get the papers for a lab_quote: pass its quote_id and a depth (papers_20 or papers_100) to get the top papers matching the quoted filter, ranked by impact, with the curation behind each rank. Each paper carries its abstract where one is on file (about 6 in 10). A stale or expired quote is refused. Requires a Professional+ account. Without a key, pay per call: the quoted price of the depth, less the $0.01 quote credit in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
- `research`: CALL THIS FIRST for a literature question about chemistry, materials or physics research -- a broad one ('what matters in X') or a specific process or parameter one (a deposition condition, a property value, a defect mechanism). Send the question in plain words (q), or a paper you already know (paper: DOI or title). Returns reading lists in four lenses: relevant (the papers whose TITLE AND ABSTRACT best match the question, across the whole corpus, BM25 -- start here for a specific question), foundational (the classics the question's own papers cite most), now (highest impact, young papers' citations projected) and newest (last two years); plus the research communities and element sub-communities the question is about, with why each matched and whether it is rising. Put the question's key terms in q: filler words are ignored. unmatched_terms lists words that matched nothing; rephrase those. Each paper carries its DOI, a one-line reason and its abstract where one is on file. Our corpus is curated, not complete: the relevant lens also brings up to 3 of every 10 results from OpenAlex, marked source='openalex' and labelled not yet curated. One page = up to 10 papers per lens; ask for page 2+ only if needed. Requires a Personal+ account. Without a key, pay per call: $0.05 in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).
- `search_subjects`: Resolve a free-text query (a compound, material, or research topic) to its subject_type/subject_id for use with get_subject_ri. Free with any API key. Without a key, pay per call: $0.01 in USDC on Base or Solana via x402 (send the payment in _meta["x402/payment"]).