OpenMetadata is an open platform that organizes information about data, including its meaning, ownership, quality, history, and relationships. It provides governed context for data users, AI assistants, and agents that need to discover and understand trustworthy data.
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 agentmods add skills/open-metadata/openmetadata/connector-standardsnpx skills add open-metadata/OpenMetadata --skill connector-standardsgit clone --depth 1 https://github.com/open-metadata/OpenMetadataWrote 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/open-metadata/openmetadata/connector-standards)<a href="https://agentmods.dev/skills/open-metadata/openmetadata/connector-standards"><img src="https://agentmods.dev/badge/skills/open-metadata/openmetadata/connector-standards.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 | $0.00026 | $0.00836 |
| Opus 5 | $0.00013 | $0.00418 |
| Sonnet 5 | $0.00005 | $0.00167 |
| Haiku 4.5 | $0.00003 | $0.00084 |
Grade A, and why
connector-standards 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 5d 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 — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Load OpenMetadata Connector Standards
When to Activate
When a user asks to "load standards", "show connector standards", or before starting any connector development or review work.
Behavior
Load All Standards
If no specific standard is requested, load all standards in this order:
${CLAUDE_SKILL_DIR}/standards/main.md— Architecture overview${CLAUDE_SKILL_DIR}/standards/patterns.md— Error handling, logging, pagination${CLAUDE_SKILL_DIR}/standards/code_style.md— Python and JSON Schema conventions${CLAUDE_SKILL_DIR}/standards/schema.md— Connection schema patterns${CLAUDE_SKILL_DIR}/standards/connection.md— Connection class patterns${CLAUDE_SKILL_DIR}/standards/service_spec.md— ServiceSpec registration${CLAUDE_SKILL_DIR}/standards/testing.md— Unit and integration test patterns${CLAUDE_SKILL_DIR}/standards/registration.md— How to register a connector${CLAUDE_SKILL_DIR}/standards/performance.md— Performance best practices${CLAUDE_SKILL_DIR}/standards/memory.md— Memory management and OOM prevention${CLAUDE_SKILL_DIR}/standards/lineage.md— Lineage extraction methods${CLAUDE_SKILL_DIR}/standards/sql.md— SQLAlchemy patterns and URL building
Then read all source-type standards:
${CLAUDE_SKILL_DIR}/standards/source_types/*.md
Load Specific Standard
If a specific standard or service type is requested:
| Request | File to Load |
|---|---|
| "testing" | standards/testing.md |
| "patterns" | standards/patterns.md |
| "schema" | standards/schema.md |
| "lineage" | standards/lineage.md |
| "sql" | standards/sql.md |
| "memory" | standards/memory.md |
| "database" | standards/source_types/database.md |
| "sql databases" | standards/source_types/sql_databases.md |
| "data warehouses" | standards/source_types/data_warehouses.md |
| "nosql" | standards/source_types/nosql_databases.md |
| "dashboard" | standards/source_types/dashboard.md |
| "pipeline" | standards/source_types/pipeline.md |
| "messaging" | standards/source_types/messaging.md |
| "mlmodel" | standards/source_types/mlmodel.md |
| "storage" | standards/source_types/storage.md |
| "search" | standards/source_types/search.md |
| "api" | standards/source_types/api.md |
| etc. | standards/source_types/{name}.md |
What ships with it
1 file 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.
- 5d ago First seen · 76 lines · 26 tokens per session scan A 60d3f6ff1157
connector-standards is a skill published in the GitHub repository open-metadata/OpenMetadata (15,109 stars, last pushed today), licensed Apache-2.0. It adds 26 tokens to every session and 836 once invoked, about $0.0001 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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