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.
npx skills add Canner/wren-engine --skill wren-connection-infogit clone --depth 1 https://github.com/Canner/wren-engineWrote 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.
[](https://agentmods.dev/skills/canner/wren-engine/wren-connection-info)<a href="https://agentmods.dev/skills/canner/wren-engine/wren-connection-info"><img src="https://agentmods.dev/badge/skills/canner/wren-engine/wren-connection-info.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00113 | $0.01070 |
| Opus 5 | $0.00056 | $0.00535 |
| Sonnet 5 | $0.00023 | $0.00214 |
| Haiku 4.5 | $0.00011 | $0.00107 |
Grade A, and why
wren-connection-info scanned grade A with 0 findings 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 8d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Wren Connection Info Reference
Connection info can only be configured through the MCP server Web UI at http://localhost:9001. Do not attempt to set it programmatically. Always direct the user to the Web UI.
Supported data sources
| Value | Database | Fields reference |
|---|---|---|
POSTGRES |
PostgreSQL | databases.md |
MYSQL |
MySQL / MariaDB | databases.md |
MSSQL |
SQL Server | databases.md |
CLICKHOUSE |
ClickHouse | databases.md |
ORACLE |
Oracle | databases.md |
DORIS |
Apache Doris | databases.md |
REDSHIFT |
Amazon Redshift | databases.md |
TRINO |
Trino | databases.md |
BIGQUERY |
Google BigQuery | databases.md |
SNOWFLAKE |
Snowflake | databases.md |
DUCKDB |
DuckDB | databases.md |
ATHENA |
AWS Athena | databases.md |
DATABRICKS |
Databricks | databases.md |
SPARK |
Apache Spark | databases.md |
S3_FILE |
Amazon S3 | file-sources.md |
GCS_FILE |
Google Cloud Storage | file-sources.md |
MINIO_FILE |
MinIO | file-sources.md |
LOCAL_FILE |
Local files | file-sources.md |
Read the linked reference file for the user's data source to get required fields, default ports, and setup notes.
Common patterns
Most database connectors need: host, port, user, password, database.
Exceptions:
- BigQuery — uses
project_id,dataset_id,credentials(base64-encoded). See databases.md for encoding instructions. - Snowflake — uses
accountinstead ofhost, plusschema. - Trino — needs
catalogandschemainstead ofdatabase. - Databricks — uses
serverHostname,httpPath,accessToken(or service principal withclientId,clientSecret). - Spark — only
hostandport(Spark Connect protocol, no auth fields). - File sources — use
url,format, plus bucket/credentials. See file-sources.md.
What ships with it
2 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.
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.
- 8d ago First seen · 84 lines · 113 tokens per session scan A 83f0e6dc16c2
wren-connection-info is a skill published in the GitHub repository Canner/wren-engine (663 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 113 tokens to every session and 1,070 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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