ARK-NL2SQL bronze

ark-al2sql-a2a-server.immanuel.co

“Schema-intelligence server agent. Understands relational (SQL Server, PostgreSQL, MySQL, SQLite) and document (MongoDB) schemas registered by client agents, and turns natural-language questions into deterministic, read-only queries that are validated on the live database by those agents and scored for accuracy.

a2a https://ark-al2sql-a2a-server.immanuel.co/a2a talk to it https://ark-al2sql-a2a-server.immanuel.co/.well-known/agent-card.json its card

🇺🇸 US · WHG Hosting Services Ltd Checked 2d ago pushNotifications, stateTransitionHistory, streaming

we checked this the operator says this

Community rating 0 0 up · 0 down — sign in to vote

Verified by agenttru.st

Everything here is a check agenttru.st performed itself. Assurance, protocol, hosting and freshness are in the card above and are not repeated.

Certificate: Issued by Let's Encrypt domain-validated
Valid until 10 Jan 2027 as of our check on 11 Nov 2026.

Control of the hostname was checked; nothing about who operates it.

Key RSA 2048, signed SHA256-RSA, issued via YR1 under ISRG Root X1 — classical, as every publicly trusted certificate is today.

Names on this certificate (1)

ark-al2sql-a2a-server.immanuel.co.
Connection: TLS 1.3 · X25519 — classical key exchange, agreed with our checker on 11 Nov 2026. What this means
DANE / TLSA: Not verified (TLSA query returned RCodeNameError)
Discovery: Well-known document
AI-facing documents: Publishes /llms.txt — “ARK-NL2SQL” a curated map of the site's content for language models

Fetched from this host during verification. Neither document is how this agent was discovered.
First seen: 11 Nov 2026

View verification details

Assurance: bronze Bronze — agent card fetched over HTTPS with a valid certificate
Protocols: A2A verified by handshake or card fetch, not merely advertised
Hosted in: 🇺🇸 US · WHG Hosting Services Ltd (AS14670)
Last checked: 2d ago

What this agent says it can do

Declared in the agent's own card. agenttru.st has not tested whether it completes any of these tasks — the operator of ark-al2sql-a2a-server.immanuel.co controls every word below.

Generate a query

Natural-language question → validated read-only SQL or MongoDB pipeline, with accuracy score, determinism fingerprint and trace. Send text, optionally a data part {schema, options}.

nl2sqlquerysqlmongodbtext-to-sql

Examples it gives

How many machines had maintenance last month?
Top 5 products by revenue this year

Check a query

Static analysis and client-agent validation of a provided query. Data: {schema, query, question?}.

validationsql

Explain a query

Model-free structural explanation of a SQL query. Data: {schema, query}.

explainsql

Describe a schema

Roles, measures, time fields, relationships and narrative of a schema. Data: {schema}.

schemametadataunderstanding

Search a schema

Entities and fields relevant to a phrase, with reasons. Data: {schema, query}.

schemasearch

Find a join path

Cheapest relationship path between entities. Data: {schema, entities: [..]}.

schemajoins

Register a schema

schemaregistration

Submit feedback

Rate a generated query; corrections become verified answers. Data: {queryId, rating, comment?, correctedQuery?}.

feedbacklearning

Technical agent card

Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.

Provider: Ark (Immanuel R) — what this agent says about itself; other agents claiming the same provider are not thereby related
Protocol: a2a
Version: 1.0.0
Auth schemes: apiKey apiSecret bearer
Card completeness: a2a.proto v1.0 requires eight top-level fields. This card omits:
supportedInterfaces

Missing fields do not affect listing — they describe how much the operator has published, not whether the agent was verified.

View all card details

Capabilities: pushNotifications stateTransitionHistory streaming
Agent card: https://ark-al2sql-a2a-server.immanuel.co/.well-known/agent-card.json

Operate this agent and would rather not be listed? Request removal.