Wikidata Sparql
REMOTE · GATEWAY.PIPEWORX.IO · 2 COMPONENTS
Wikidata SPARQL MCP — Wikidata Query Service
Available components
Last scanned (12 hours ago)
Scores higher than 44% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Education and Research
Recent critical change
Authorization (9 Sept 2026). See the changelog before you install this server.
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (forget). See how to fix → View diagnostics → Fail
- HTTPS check failed: the endpoint is reachable over plaintext HTTP. See how to fix → View diagnostics → Fail
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability82
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 23779 tokens (~475/item across 50 items; 50 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Tools include usage examples.Pass
Stability & Change Management32
- Stability check failed: schema churn in the 10 days we've observed: 0 tool removals, 0 breaking changes, 1 auth/transport breaks, 2 additions. See how to fix → Fail
Tool Coverage99
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 95% of tool parameters carry a description.Partial
- Structured output schemas are declared (16% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
- An AI judge read all 51 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities40
- Spec-recency check failed: implements MCP spec 2025-03-26; the latest is 2026-07-28. See how to fix → Fail
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 5 Nov 26 −14
- Authorization: pass → fail ▼ critical
- Stability: 0.30 → fail ▼ security
- The server rewrote its instructions, which are the text every model session reads security
- Tool “deep_research” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx” rewrote its description, which is the text the model reads security
- 4 Nov 26 +15
- Authorization: fail → pass ▲ security
- The server rewrote its instructions, which are the text every model session reads security
- Tool “ask_pipeworx” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads security
- Tool “deep_research” rewrote its description, which is the text the model reads security
- Stability: fail → 0.30 functional
- 3 Nov 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Tool “ask_pipeworx” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads security
- Tool “deep_research” rewrote its description, which is the text the model reads security
- 2 Nov 26 −13
- Authorization: pass → fail ▼ critical
- Stability: 0.20 → fail ▼ security
- The server rewrote its instructions, which are the text every model session reads security
- Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads security
- Tool “deep_research” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx” rewrote its description, which is the text the model reads security
- 1 Nov 26 +14
- Authorization: fail → pass ▲ security
- Stability: fail → 0.20 functional
- 31 Oct 26 +1
- The server rewrote its instructions, which are the text every model session reads security
- Tool “deep_research” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx” rewrote its description, which is the text the model reads security
- 30 Oct 26 −14
- Authorization: pass → fail ▼ critical
- Stability: 0.10 → fail ▼ security
- The server rewrote its instructions, which are the text every model session reads security
- Tool “deep_research” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads security
- Tool “compare_entities” rewrote its description, which is the text the model reads security
- 29 Oct 26 0
- Authorization: pass → fail ▼ critical
- Stability: 0.07 → fail ▼ security
- The server rewrote its instructions, which are the text every model session reads security
- Tool “ask_pipeworx” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads security
- Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads security
- Tool “bet_research” rewrote its description, which is the text the model reads security
- Tool “deep_research” rewrote its description, which is the text the model reads security
- “bet_research” reworded the description of “market” cosmetic
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://gateway.pipeworx.io/wikidata-sparql/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=pipeworx.io | CN=WE1,O=Google Trust Services,C=US | 19 Sept 2026 | 18 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 907077ac952af983139424aa9b807ef7 |
| SANs: pipeworx.io, gateway.pipeworx.io, *.gateway.pipeworx.io | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of gateway.pipeworx.io. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| io. | present | 38690 | 8 | Verified |
| pipeworx.io. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://gateway.pipeworx.io/wikidata-sparql/mcp | Verified | 200 | |
| http (plaintext) | http://gateway.pipeworx.io/wikidata-sparql/mcp | Served over HTTP | 200 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
resolve_entity Resolve Entity ~654
"What's the ticker for…" / "find the CIK for…" / "what's the LEI for…" / "what's the RxCUI for…" / "look up the ID for…" / "what is X's official identifier" / "who owns X" / "is X a subsidiary of Y" — resolve a user-spoken NAME to the canonical/official identifiers other tools require as input. Use FIRST whenever you have a name but need an ID. SUPPORTED TYPES: "company" (cross-source identity spine: 10-digit CIK + ticker + company_name from SEC EDGAR, legal-entity LEI from GLEIF with parent/ultimate-parent/children ownership when the LEI resolves, and security FIGI from OpenFIGI — by exact ticker map when a ticker is implied, and otherwise by name search, so NON-EQUITY instruments that never have a ticker (municipal and corporate bonds, notes, authority debt) DO resolve here; when a name matches more than one instrument it asserts nothing and returns `figi_candidates` to pick from, which is the correct answer to an issuer name that does not identify a single bond; every identifier is labelled with the source that established it, and an identifier that could NOT be resolved is stated explicitly under `unresolved` rather than omitted — accepts ticker, CIK, ISIN, or company name as input; an ISIN like "CH0038863350" resolves to the LEGAL ENTITY that issued the security via the GLEIF ISIN-to-LEI mapping, covering non-US issuers EDGAR cannot reach), "drug" (returns RxCUI + ingredient + brand from RxNorm + pipeworx://rxnorm/concept/{rxcui} citation; accepts brand or generic name). LEI/FIGI enrichment degrades gracefully — if GLEIF or OpenFIGI is unavailable, the EDGAR identifiers still return. Each call cascades through several lookup endpoints internally — using resolve_entity replaces 2-3 manual lookups.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | OPTIONAL ISO 3166-1 alpha-2 of the country whose business register you mean ("NO", "FI", "JP", "GB", "FR", "EE", "BR"). Narrows the national-register fan-out and is often the difference between the r… |
| type | string | yes | Entity type: "company" or "drug". |
| value | string | yes | For company: ticker (AAPL), CIK (0000320193), or name. For drug: brand or generic name (e.g., "ozempic", "metformin"). Pass the ENTITY NAME ONLY — for a bond that is the ISSUER exactly as printed ("N… |
| Name | Type | Req | Description |
|---|---|---|---|
| brand | string | – | – |
| candidates | array | – | Rivals, best first. Populated on "ambiguous" and on "matched" alike. |
| cik_withheld | string | – | A CIK that came back from a FUZZY SEC name match and is NOT asserted, because the spine matched a stronger non-US candidate, or `match_status` is "ambiguous" or "incomplete" and the SEC hit was not a… |
| company_name_withheld | string | – | The company name of a FUZZY SEC name match that is NOT asserted, withheld together with `cik_withheld`. See `unresolved.cik`. |
| fanout_incomplete | object | – | Present IFF at least one register in `searched[]` carried an `error` — set even when `match_status` stayed "ambiguous". `withheld_match` is the candidate this call declined to ASSERT because a regist… |
| figi_withheld | string | – | A FIGI that is NOT asserted. Either it matched this name in OpenFIGI (`figi_match: "name_search"`) while `match_status` is "incomplete" — a name search cannot tell a company apart from a security car… |
| ids | object | yes | Every identifier established: cik, ticker, company_name, lei, figi, isin, cusip, register_id, register_country. A key absent here appears in `unresolved` with a reason — never silently dropped. |
| ingredient | string | – | – |
| lei_withheld | string | – | A LEI that is NOT asserted: it matched the bare string exactly in GLEIF, but `match_status` is "ambiguous" or "incomplete" so the registers cannot say which company that string means, and a GLEIF hit… |
| match_explanation | string | – | Plain words. Always present when the spine ran, and required on "ambiguous" and "no_match". |
| match_scoring | object | – | The margin rule's own inputs, so a caller can see WHY it fell where it did. |
| match_status | string | – | The headline to branch on. "ambiguous" is an ANSWER, not a failure: two companies matched the name equally well and both are in `candidates`. "no_match" means every register in `searched` was asked a… |
| notes | string | – | – |
| query | string | yes | – |
| registers | array | – | The matched entity as every register that carries it — the match (flagged `matched: true`) plus anything that collapsed into it. A Companies House number AND the LEI that crosswalks to it are the SAM… |
| related | array | – | Entities that collapsed INTO the match, each carrying `collapsed_by`. |
| resolved | boolean | yes | At least one identifier was established. Read `match_status` and `unresolved` for WHICH — a company can be resolved in a national register with no CIK at all. |
| resources | object | – | – |
| searched | array | – | EVERY register asked, with its own as-of date and row count. A register that could not be reached carries `error` — 0 rows with an error is "we could not ask", 0 rows without one is "nothing is there… |
| sec_alternatives | array | – | EDGAR's other name-matching candidates: distinct companies, deduped by CIK, excluding this issuer's own share classes — surfaced instead of dropped so a caller can tell a genuinely CONTESTED name mat… |
| sources | object | yes | Per-identifier provenance. Every key in `ids` has a matching key here. |
| ticker_withheld | string | – | The ticker of a FUZZY SEC name match that is NOT asserted, withheld together with `cik_withheld` because it is the same guess. Carried so a caller who meant the US filer can still use it; see `unreso… |
| type | string | yes | – |
| unresolved | object | yes | Per-identifier reason an id could NOT be established — the honest twin of `ids`. |
{"type":"company","value":"AAPL"} scan_competitor_ai_presence Scan Competitor AI Presence ~225
Compare AI visibility across multiple entities side-by-side. Probes each entity (your brand + N competitors) with ai_visibility_check, ranks by score, surfaces which is most/least recognized. Useful for competitive AI-marketing audits: "does Claude know about us as well as our competitors?". Returns ranked list with score, confidence, signal density per entity.
| Name | Type | Req | Description |
|---|---|---|---|
| _apiKey | string | – | Optional Anthropic API key — only if "anthropic" is in models. Passed to api.anthropic.com per probe. |
| context | string | – | Optional shared context applied to every probe (e.g. "B2B SaaS", "Boston restaurant"). Disambiguates common names. |
| entities | array | yes | Array of 2-8 entities to compare (brand/business/product names). First entry treated as the "subject" for narrative; rest are competitors. |
| models | array | – | Which models to probe. Supported: "workers-ai" (free default), "anthropic" (requires _apiKey). Omit for just workers-ai. |
No output schema declared.
{"entities":["Pipeworx","Zapier"]} scan_dependency Scan Dependency ~254
Composite "should I add this npm package to my project" check in ONE call — fans out across deps.dev (license + advisories + version history) and bundlephobia (gzipped/minified bundle size, dependency count, ESM/tree-shake support). Use whenever an agent asks "is X safe / popular / small" or "what does adding lodash cost me". Returns a summary block (is_latest, license, published_at, advisory_count, bundle_kb_min, bundle_kb_gz, dependency_count, has_esm, tree_shakeable), per-advisory detail, links, and a list of recent alternative versions. NPM ecosystem only in v1; PyPI / Maven / Cargo / Go fall under deps.dev:version directly. Partial failures degrade gracefully — bundlephobia's first measurement on a new version can take 5-30s; sources_failed will list it if it times out, the rest still returns.
| Name | Type | Req | Description |
|---|---|---|---|
| package | string | yes | npm package name. Scoped packages (e.g. "@types/node") are accepted. |
| version | string | – | Specific version to check (e.g., "18.3.1"). Defaults to the latest published version when omitted. |
No output schema declared.
{"package":"left-pad"} search_within Search Within a Source ~238
Semantic search INSIDE a fetched record. Pass the text you already pulled (e.g. a SEC 10-K body, an article, a long tool result) plus a natural-language query; get back the top-N passages with character offsets and similarity scores. Use when the record is too big to cram into the prompt — search_within saves context, returns only the passages that matter, and every passage carries an offset so the agent can verify a verbatim quote. Pairs with ask_pipeworx_grounded: fetch with the gateway, ground over the relevant passages instead of the whole document. BGE-base-en embeddings + cosine over 500-char overlapping windows; cap is 200K chars (longer inputs are truncated and flagged).
| Name | Type | Req | Description |
|---|---|---|---|
| limit | number | – | Max passages to return (1-20, default 5). |
| query | string | yes | Natural-language query — what passages do you want? E.g. "supply-chain risk", "fiscal year 2024 revenue", "drug interactions with warfarin". |
| text | string | yes | The document text to search inside (max ~200K chars). |
No output schema declared.
{"query":"supply-chain risk","text":"Apple Inc. reported fiscal 2023 revenue of $383.285 billion, driven by strong iPhone and Services growth. Net income was $96.995 billion. The company faced supply-chain risk in China during the quarter."} subclasses_of Subclasses Of ~75
Return all subclasses of a Wikidata class via transitive P279 (subclass-of) traversal; takes a Wikidata entity id (e.g. Q11424) and returns labelled subclass items up to the specified limit.
| Name | Type | Req | Description |
|---|---|---|---|
| entity_id | string | yes | – |
| lang | string | – | – |
| limit | number | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| head | object | – | – |
| results | object | – | – |
{"entity_id":"Q146"}{"entity_id":"Q7889","lang":"fr","limit":200} subscribe Subscribe to Alerts ~943
Create a proactive monitoring subscription to a live-data event stream. Returns the new subscription id. Requires a Pipeworx OAuth account (anonymous + BYO cannot persist subscriptions). Supported types: "sec_8k" (8-K filings matching ticker + item codes — e.g. items:["5.02"] = officer change), "polymarket_edge" (Polymarket↔Kalshi cross-venue mispricings — params:{topic:"fed"}), "fred_series" (new FRED observations — params:{series_id:"UNRATE"}), "patent_grant" (new USPTO grants for an applicant), "clinical_trial" (new/updated ClinicalTrials.gov studies), "form_d" (new SEC Form D fundraise notices — params:{state?, industry?, min_amount?, exemption?}, all optional), "news_keyword" (GDELT keyword news alerts, metadata+link only — params:{query, lang?, domains?}), "job_post" (new public job-board postings — params:{ats?, board_token?} or {domain?}, plus optional title_query/location_query), "tool_diff" (re-runs any read-only tool on a schedule and fires on change — params:{tool, args?, fields[], schedule}), "new_entity" (new business registrations from a state business-entity registry — params:{state:"CO", name_query?, entity_type?}), "tech_change" (a watched domain's website technology stack adds or drops a technology — params:{domains:["acme.com"], technologies?}). Delivery channels: feed (always on — pull via recent_alerts or GET registry.pipeworx.io/alerts.json), and optionally email (set delivery:{email:"you@x.com"}) or sms (delivery:{sms:"+15551234567"} — phone must be verified at /account first; 10/day cap).
| Name | Type | Req | Description |
|---|---|---|---|
| delivery | object | – | Optional delivery channels in addition to the always-on persistent feed. {email:"you@x.com"} sends a templated alert per fired event. {sms:"+15551234567"} sends an SMS per event — must match the veri… |
| params | object | yes | Type-specific filter. sec_8k: {ticker:"AAPL", items?:["5.02","1.01"]}. polymarket_edge: {topic:"fed", min_spread_bps?:500}. fred_series: {series_id:"UNRATE"}. patent_grant: {applicant:"Apple Inc."}.… |
| type | string | yes | Subscription type. |
No output schema declared.
No examples provided.
suggest_questions What Can I Ask Pipeworx? ~240
What can I ask Pipeworx? / what is Pipeworx good for? / what can you do? / give me ideas / show me examples / getting started / what data do you have? — the onboarding entry point for an agent that just connected and wants to know what is worth asking. Returns category-bucketed example questions (company financials, drugs & clinical trials, economics, real estate, prediction markets, weather, government & patents, science & academia, news) — each with the exact tool + argument shape that answers it, drawn from the live catalog of thousands of tools. Call with no arguments for the full spread, or pass `topic` (e.g. "finance", "pharma", "betting") to focus. Use this FIRST when you do not yet know what Pipeworx can do for you, or to learn how to call the meta-tools (ask_pipeworx, entity_profile, compare_entities, etc.).
| Name | Type | Req | Description |
|---|---|---|---|
| topic | string | – | Optional focus area: finance | pharma | economics | real-estate | betting | weather | government | science | news. Omit for a cross-category spread. |
No output schema declared.
{"topic":"finance"} unsubscribe Unsubscribe from Alerts ~60
Cancel a subscription by id. Ownership is enforced — you can only cancel your own subscriptions. The row is deactivated (not deleted) so its historical events stay available via recent_alerts.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | Subscription id (uuid) returned by subscribe. |
No output schema declared.
No examples provided.
updown_divergence_rate Updown Divergence Rate ~586
How often two venues settled the SAME 15-minute crypto window differently, over every settled window on record. Compares polymarket.com (Chainlink TWAP) with Kalshi and with Polymarket US (both CF Benchmarks BRTI), and Kalshi with Polymarket US as the same-feed control. Per pair: windows both venues settled, divergent count, the rate with its 95% Wilson interval (withheld under 30 paired windows), which direction they split, and what was excluded (unsettled on a side, 50-50). A HEADLINE RATE IS A CONCENTRATION QUESTION, so every pair also carries `concentration` (UTC days and hours the divergent windows fell in, the busiest day, the top-3-day share, and a plain reading) and `by_how_decided` (the rate by how far the reference venue's mid was from 50 at its last priced minute: the rate is a fraction of a percent for windows that were decided by the end and tens of percent for the ones that were not). `divergent_path` gives the mean Up mid by minute on both venues over the divergent windows only, split by who said Up, so the "early spike that fades" story can be checked rather than assumed. Measured on the archive 2026-10-27 over 30 days of btc: polymarket.com vs Kalshi diverged on 48 of 2,847 windows (1.69%, interval 1.27-2.23), spread over 27 of 31 UTC days, 0.19% of windows decided by the end and 17-29% of the ones still undecided; Polymarket US vs Kalshi on 0 of 1,838. asset btc | eth | sol | xrp | bnb (bnb has no pair: Kalshi only); days 1-90 (default 30), capped by what the archive holds (it starts 2026-09-22 for polymarket.com and Kalshi, 2026-10-07 for Polymarket US). Read-only; cheap enough to call, it reads several thousand archive rows.
| Name | Type | Req | Description |
|---|---|---|---|
| asset | string | – | btc (default) | eth | sol | xrp | bnb. The archive holds btc/eth on all three venues, sol/xrp on polymarket.com and Polymarket US, bnb on Kalshi only (no pair). |
| days | number | – | Look-back in days, 1-90 (default 30). The archive starts 2026-09-22 (polymarket.com, Kalshi) and 2026-10-07 (Polymarket US, btc), so a longer span is capped by what is held; coverage is reported per… |
No output schema declared.
{"asset":"btc","days":30}{"asset":"eth","days":14} updown_venue_compare Updown Venue Compare ~719
The same 15-minute crypto "up or down" window priced on polymarket.com, Polymarket US and Kalshi, side by side, with whether each pair is actually the same contract. Pass asset (btc | eth | sol | xrp | bnb) and window ("current" default, "next", "previous", or the window START as ISO such as 2026-10-27T14:15:00Z, on a 15-minute boundary). Per venue: question, Up bid / ask / mid / last, spread_pp, quote_state, volume WITH ITS UNIT, open interest, liquidity, settlement source, comparison basis, when it settles. THE VENUES ARE NOT ONE CONTRACT. Kalshi and Polymarket US settle on CF Benchmarks' BRTI (60-second average at the end against the same at the start): the same bet, so a gap between them is a real disagreement. polymarket.com settles on a Chainlink 60-second TWAP, end against start: same comparison shape, different feed, so a gap against either is partly the contract. `pairs[]` gives equivalent ("true"|"false"|"unclear"|"not_comparable") from resolution_diff for every pair, material_differences, mid_diff_pp (a minus b, in percentage points) and read_as in words. Measured over 30 days of settled windows the Chainlink and BRTI feeds settle a window differently about 1.2-1.8% of the time, almost entirely windows that ended near the threshold (see updown_divergence_rate). `net_spread` is computed only for the pair that is equivalent: the gap in mid terms and at top of book (buy Up where cheaper at the ask, Down where Up is dearer at 1 minus the bid) after BOTH venues' taker fees, each fee carrying its verified-as-of date. Top-of-book size is shown where the venue publishes it (Polymarket US); the Kalshi figure is not in its market payload, so read its order book before sizing. A venue with no market for the window is {status:"not_listed", reason}; one that could not be read is {status:"unavailable", refusal} -- never an empty object, and never the same thing. A one-sided book (typical Polymarket US just before a window is decided) has quote_state "bid_only", a null…
| Name | Type | Req | Description |
|---|---|---|---|
| asset | string | – | btc (default) | eth | sol | xrp | bnb. Coverage differs by venue; a venue that does not list the asset answers not_listed. |
| horizon | string | – | 15m (default and the only value offered). |
| window | string | – | "current" (default), "next", "previous", or the window START as an ISO-8601 timestamp on a 15-minute boundary, e.g. 2026-10-27T14:15:00Z. An unaligned timestamp is refused, not rounded. |
No output schema declared.
{"asset":"btc","horizon":"15m","window":"current"}{"asset":"eth","window":"previous"}{"asset":"btc","window":"2026-10-27T14:30:00Z"} validate_claim Validate Claim ~370
"Is it true that…" / "fact check" / "verify the claim that…" / "did X really…" / "was Y actually…" / "confirm or refute" / "true or false" — natural-language claim verification against authoritative sources. Use whenever the agent needs to check whether something a user said is factually correct. Company-financial claims (revenue, net income, cash for public US companies) verify via the structured SEC EDGAR + XBRL fast path with exact percent-delta math; ANY OTHER factual claim (macro statistics, rates, prices, drug data, records) automatically falls through to the grounded pipeline — routed to the right live source, answered with verbatim evidence, then judged. Returns a verdict (confirmed / approximately_correct / refuted / inconclusive / unsupported / could_not_verify), the grounded or structured actual value with pipeworx:// citation, and reasoning. IMPORTANT for callers: could_not_verify means the check did not happen (our LLM or source failed) and carries verification_error{stage,detail} — it is NOT evidence for or against the claim, and must not be shown as one. unsupported means we looked and cover no source for it. Replaces 4–6 sequential calls (NL parsing → entity resolution → data lookup → comparison).
| Name | Type | Req | Description |
|---|---|---|---|
| claim | string | yes | Natural-language factual claim, e.g., "Apple's FY2024 revenue was $400 billion" or "Microsoft made about $100B in profit last year". |
| tolerance_pct | number | – | Max percent deviation still graded approximately_correct (0.5–50). Overrides the tolerance implied by the claim wording — set 1–2 for hallucination detection where any material error must be refuted.… |
No output schema declared.
{"claim":"Apple's fiscal 2023 revenue was $383 billion"} How do I install the Wikidata Sparql MCP server?
Wikidata Sparql is a hosted endpoint at https://gateway.pipeworx.io/wikidata-sparql/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · gateway.pipeworx.io
claude mcp add --transport http pipeworx-io-wikidata-sparql 'https://gateway.pipeworx.io/wikidata-sparql/mcp'
What is the Wikidata Sparql MCP server?
Wikidata Sparql is an MCP server listed in the public MCP registry as io.github.pipeworx-io/wikidata-sparql. Wikidata SPARQL MCP, Wikidata Query Service. This page covers its hosted endpoint (https://gateway.pipeworx.io/wikidata-sparql/mcp).
Is the Wikidata Sparql MCP server safe to use?
Wikidata Sparql scores 63 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Wikidata Sparql MCP server expose?
Wikidata Sparql exposes 50 tools: ask_pipeworx, ask_pipeworx_beta, ask_pipeworx_grounded, search_within, deep_research, and 45 more. Their descriptions and schemas cost roughly 23,542 tokens of context every time the server is loaded.
Does the Wikidata Sparql MCP server require authentication?
No. We connected to Wikidata Sparql without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Wikidata Sparql MCP server still maintained?
Wikidata Sparql is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.