data-twingler

data-twingler is a skill for Claude Code, Codex from OpenLinkSoftware/ai-agent-skills. It costs 139 tokens per session (7,675 once invoked), scanned A, original, MIT.

A natural-language query tool for SQL, SPARQL, SPASQL, SPARQL-FED, and GraphQL data sources. SPARQL queries linked-data graphs, while GraphQL queries structured web data.

In plain words
What is it for?
Use it to run queries, discover graph data, inspect results, and query SQL, RDF, federated SPARQL, or GraphQL endpoints.
Why use it?
It lets you retrieve and explore live database and knowledge-graph data without writing an imperative program.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths; mentions CLAUDE.md.

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/openlinksoftware/ai-agent-skills/data-twingler
Any agent
npx skills add OpenLinkSoftware/ai-agent-skills --skill data-twingler
Clone the repo
git clone --depth 1 https://github.com/OpenLinkSoftware/ai-agent-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for data-twingler

README.md
[![agentmods](https://agentmods.dev/badge/skills/openlinksoftware/ai-agent-skills/data-twingler.svg)](https://agentmods.dev/skills/openlinksoftware/ai-agent-skills/data-twingler)
Your own site
<a href="https://agentmods.dev/skills/openlinksoftware/ai-agent-skills/data-twingler"><img src="https://agentmods.dev/badge/skills/openlinksoftware/ai-agent-skills/data-twingler.svg" alt="Measured on agentmods" height="20"></a>
Per session 139 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 7,675 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00139 $0.07675
Opus 5 $0.00069 $0.03837
Sonnet 5 $0.00028 $0.01535
Haiku 4.5 $0.00014 $0.00768

Measured 6d ago against content hash 0173f3b8e891, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

data-twingler scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

1. Direct native endpoint calls with `curl` or the query protocol's simplest direct mechanism
data-twingler/SKILL.md · 632 lines

How it starts

The opening of the file, as written. The whole thing — 632 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Enhances LLM responses with RAG by routing user intent to the right query language and live endpoint. Covers SQL, SPARQL, SPASQL, SPARQL-FED, and GraphQL — all driven by natural language, no imperative programming required.


Defaults & Settings

Parameter Value
SPARQL Default Endpoint https://linkeddata.uriburner.com/sparql
SPARQL Result Format text/x-html+tr
SPARQL / SQL Timeout 30 seconds
SPARQL Max Results 20 (unless overridden)
Graph IRI Discovery LIMIT 50
GraphQL Default Endpoint https://linkeddata.uriburner.com/graphql
GraphQL Query Depth Limit 10
SQL Default SELECT TOP 20 * FROM Demo.Demo.Customers
Cache TTL 3600 seconds
Parallel Execution Enabled
Tabulate All Results Yes (all query types)
Semantic Variant Retries 3
Fallback Endpoints https://kingsley.idehen.net/sparql, https://demo.openlinksw.com/sparql
Local RDF Directories Fallback only: ~/Documents/LLMs/*/rdf/, ~/Documents/LLMs/GPT5-Chat-Generated/rdf/, ./rdf/
Auto-Discover Local RDF Enabled for fallback only — scans model-root RDF directories and ./rdf/ after endpoint exhaustion
Vector Similarity Threshold (Local) 0.75
Vector Candidate Types schema:Question, schema:DefinedTerm, schema:HowTo, schema:HowToStep, skos:Concept
Server-Side Vector Similarity Threshold 0.5

Query Language Routing

Execution Routing

Default execution order for query execution:

  1. Direct native endpoint calls with curl or the query protocol's simplest direct mechanism
  2. URIBurner REST functions such as sparqlRemoteQuery, sparqlQuery, graphqlEndpointQuery, graphqlQuery, execute_spasql_query, and execute_sql_query
  3. Terminal-owned OAuth flow — when the endpoint requires OAuth 2.0 authentication, execute the OAuth 2.0 flow from the terminal (authorization code, client credentials, or device flow), capture the Bearer token, and inject it into subsequent REST/OpenAPI calls via Authorization: Bearer {token} headers
  4. MCP via https://linkeddata.uriburner.com/chat/mcp/messages or https://linkeddata.uriburner.com/chat/mcp/sse
  5. Authenticated LLM-mediated execution via https://linkeddata.uriburner.com/chat/functions/chatPromptComplete
  6. OPAL Agent routing using recognizable OPAL function names

Read the full file on GitHub · 632 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 632 lines · 139 tokens per session scan A 0173f3b8e891

Subscribe to this mod's changes

data-twingler is a skill published in the GitHub repository OpenLinkSoftware/ai-agent-skills (38 stars, last pushed 2d ago), licensed MIT. It adds 139 tokens to every session and 7,675 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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