external-sources: Research & Knowledge for AI Agents | OpenAgentSkill

Overview

Use when Home Assistant's own data is not enough — querying long-term history from InfluxDB (or another external store Home Assistant writes to but cannot read back) directly from this machine.

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HA NOVA External Sources

Scope

Data that Home Assistant SENDS somewhere but cannot read back:

InfluxDB long-term history (the common case: the recorder purges after ~10 days, InfluxDB keeps years)
the same pattern for other read-only stores (Prometheus, Grafana's backend) when the user has one

Not in scope: Home Assistant's own history and statistics (ha-nova:history), energy data (ha-nova:energy), or writing to any external system. This skill is read-only by contract.

The premise correction (say this first)

The influxdb integration is write-only from Home Assistant's side: it streams states out, and Home Assistant has no API to query them back. So "show me last year's temperature from InfluxDB" cannot go through the relay at all — the relay only talks to Home Assistant.

Instead, this skill queries InfluxDB's own HTTP API directly from this machine, using the client's normal HTTP tooling. Say that plainly before doing it: it is a different data path, with the user's own credentials.

Bootstrap (once per session)

Read and follow ../ha-nova/session-bootstrap.md.

Confirm the integration exists: ha-nova relay core --method GET --path /api/components and look for influxdb. If it is absent, Home Assistant is not writing to InfluxDB and there is nothing to query.
Credentials come from the user's environment, never from chat and never from a file in the repo:
- HANOVA_INFLUXDB_URL (e.g. http://192.168.1.10:8086)
- HANOVA_INFLUXDB_TOKEN (2.x/3.x) or HANOVA_INFLUXDB_USER + HANOVA_INFLUXDB_PASSWORD (1.x)
- HANOVA_INFLUXDB_BUCKET (2.x) or HANOVA_INFLUXDB_DB (1.x)
- HANOVA_INFLUXDB_ORG (2.x — the query API requires it on self-hosted OSS; optional on Cloud, where the token implies it) If they are unset, explain what to set and where (their shell profile) — then STOP. Never ask the user to paste a token into the conversation.

Relay Contract

The relay is NOT used for the query itself — it cannot reach other hosts, by design. It is used only to check the integration is present (above) and to resolve entity names (ha-nova:entity-discovery rules apply).

The query goes out with the client's own HTTP tool.

Flow

Detect the InfluxDB version once: GET <url>/ping (1.x answers with an X-Influxdb-Version header) or GET <url>/health (2.x/3.x).
Resolve what the user means to a real Home Assistant entity first, then split it for the query: the writer tags rows with domain and with entity_id = the object id WITHOUT the domain prefix (sensor.kitchen_temperature → "domain" = 'sensor', "entity_id" = 'kitchen_temperature'). Querying the full ID silently returns nothing.
Query, bounded, and read-only:
- 1.x: GET <url>/query?db=<db>&q=<InfluxQL> — e.g. SELECT mean("value") FROM "°C" WHERE "domain" = 'sensor' AND "entity_id" = 'kitchen_temperature' AND time > now() - 365d GROUP BY time(1d)
- 2.x: POST <url>/api/v2/query?org=<org> with Authorization: Token <token>, a Flux body, and Accept: application/csv
- 3.x: POST <url>/api/v3/query_sql with SQL Always bound the time range and aggregate in the query (GROUP BY time(...)) — never pull raw points for a year and summarize client-side.
Present the result as an answer, not a data dump: the trend, the numbers that matter, the time range, and the source (InfluxDB, not Home Assistant).

When this comes up repeatedly

If the user keeps asking for the same InfluxDB series, the better answer is a Home Assistant entity: an influxdb sensor in YAML materializes a query as a real sensor, which then works with ha-nova:history and dashboards like anything else. Hand off to ha-nova:yaml-config for that — it is the durable fix.

Error Handling

Missing credentials: a configuration gap, not an error. Say what to set, stop.
Connection refused / timeout / DNS failure: the most likely real failure — this machine may have no route to the store (separate VLAN, firewall, a hostname only resolvable inside HA's network). Name the exact host:port that failed, suggest verifying reachability from THIS machine and that the store listens beyond localhost; do not retry blindly.
401/403: the token is wrong or lacks read permission on that bucket — the user fixes it in InfluxDB, not here.
Empty result: usually the full entity ID in the entity_id tag (it holds only the object id) or a wrong measurement name (InfluxDB names measurements after the unit, e.g. °C). Show what you queried before concluding the data does not exist.

Output Format

Apply skills/ha-nova/output-rules.md to all user-facing output.

Render the Report shape (output-rules.md). Name the source explicitly (InfluxDB, queried directly — not Home Assistant), the time range, and the query in short form; answer the question, do not paste raw rows.

Safety

Read-only skill: never issue mutating relay or service calls.
For write intent, hand off to the owning skill; unfamiliar writes go through ha-nova:fallback first.
Read-only by contract: this skill never constructs an INSERT, DELETE, DROP, or any schema change against an external store. If the user asks for one, refuse and point at the store's own tooling.
Credentials live in the user's environment only. Never echo a token, never write one into a file, never ask for one in chat.
The relay is not involved in these queries: say so, so the user knows their data path.

Guardrails

Always bound the time range; always aggregate server-side.
Never guess an entity_id or measurement name — resolve, then query.
Never present external data as if it came from Home Assistant.

View source ↗

File metadata

name: external-sources
description: Use when Home Assistant's own data is not enough — querying long-term history from InfluxDB (or another external store Home Assistant writes to but cannot read back) directly from this machine.
license: MIT
compatibility: Requires the ha-nova CLI (run 'ha-nova setup' first) and the HA NOVA Relay in Home Assistant (App, or standalone container on Container/Core).

View original text

---
name: external-sources
description: Use when Home Assistant's own data is not enough — querying long-term history from InfluxDB (or another external store Home Assistant writes to but cannot read back) directly from this machine.
license: MIT
compatibility: Requires the ha-nova CLI (run 'ha-nova setup' first) and the HA NOVA Relay in Home Assistant (App, or standalone container on Container/Core).
---

# HA NOVA External Sources

## Scope

Data that Home Assistant SENDS somewhere but cannot read back:
- InfluxDB long-term history (the common case: the recorder purges after ~10 days, InfluxDB keeps years)
- the same pattern for other read-only stores (Prometheus, Grafana's backend) when the user has one

Not in scope: Home Assistant's own history and statistics (`ha-nova:history`), energy data (`ha-nova:energy`), or writing to any external system. This skill is read-only by contract.

## The premise correction (say this first)

The `influxdb` integration is **write-only from Home Assistant's side**: it streams states out, and Home Assistant has no API to query them back. So "show me last year's temperature from InfluxDB" cannot go through the relay at all — the relay only talks to Home Assistant.

Instead, this skill queries InfluxDB's own HTTP API **directly from this machine**, using the client's normal HTTP tooling. Say that plainly before doing it: it is a different data path, with the user's own credentials.

## Bootstrap (once per session)

Read and follow `../ha-nova/session-bootstrap.md`.
1. Confirm the integration exists: `ha-nova relay core --method GET --path /api/components` and look for `influxdb`. If it is absent, Home Assistant is not writing to InfluxDB and there is nothing to query.
2. Credentials come from the user's environment, never from chat and never from a file in the repo:
   - `HANOVA_INFLUXDB_URL` (e.g. `http://192.168.1.10:8086`)
   - `HANOVA_INFLUXDB_TOKEN` (2.x/3.x) or `HANOVA_INFLUXDB_USER` + `HANOVA_INFLUXDB_PASSWORD` (1.x)
   - `HANOVA_INFLUXDB_BUCKET` (2.x) or `HANOVA_INFLUXDB_DB` (1.x)
   - `HANOVA_INFLUXDB_ORG` (2.x — the query API requires it on self-hosted OSS; optional on Cloud, where the token implies it)
   If they are unset, explain what to set and where (their shell profile) — then STOP. Never ask the user to paste a token into the conversation.

## Relay Contract

The relay is NOT used for the query itself — it cannot reach other hosts, by design. It is used only to check the integration is present (above) and to resolve entity names (`ha-nova:entity-discovery` rules apply).

The query goes out with the client's own HTTP tool.

## Flow

1. Detect the InfluxDB version once: `GET <url>/ping` (1.x answers with an `X-Influxdb-Version` header) or `GET <url>/health` (2.x/3.x).
2. Resolve what the user means to a real Home Assistant entity first, then split it for the query: the writer tags rows with `domain` and with `entity_id` = the object id WITHOUT the domain prefix (`sensor.kitchen_temperature` → `"domain" = 'sensor'`, `"entity_id" = 'kitchen_temperature'`). Querying the full ID silently returns nothing.
3. Query, bounded, and read-only:
   - **1.x**: `GET <url>/query?db=<db>&q=<InfluxQL>` — e.g. `SELECT mean("value") FROM "°C" WHERE "domain" = 'sensor' AND "entity_id" = 'kitchen_temperature' AND time > now() - 365d GROUP BY time(1d)`
   - **2.x**: `POST <url>/api/v2/query?org=<org>` with `Authorization: Token <token>`, a Flux body, and `Accept: application/csv`
   - **3.x**: `POST <url>/api/v3/query_sql` with SQL
   Always bound the time range and aggregate in the query (`GROUP BY time(...)`) — never pull raw points for a year and summarize client-side.
4. Present the result as an answer, not a data dump: the trend, the numbers that matter, the time range, and the source (InfluxDB, not Home Assistant).

## When this comes up repeatedly

If the user keeps asking for the same InfluxDB series, the better answer is a Home Assistant entity: an `influxdb` sensor in YAML materializes a query as a real sensor, which then works with `ha-nova:history` and dashboards like anything else. Hand off to `ha-nova:yaml-config` for that — it is the durable fix.

## Error Handling

- Missing credentials: a configuration gap, not an error. Say what to set, stop.
- Connection refused / timeout / DNS failure: the most likely real failure — this machine may have no route to the store (separate VLAN, firewall, a hostname only resolvable inside HA's network). Name the exact host:port that failed, suggest verifying reachability from THIS machine and that the store listens beyond localhost; do not retry blindly.
- `401`/`403`: the token is wrong or lacks read permission on that bucket — the user fixes it in InfluxDB, not here.
- Empty result: usually the full entity ID in the `entity_id` tag (it holds only the object id) or a wrong measurement name (InfluxDB names measurements after the unit, e.g. `°C`). Show what you queried before concluding the data does not exist.

## Output Format

Apply `skills/ha-nova/output-rules.md` to all user-facing output.

Render the Report shape (output-rules.md). Name the source explicitly (InfluxDB, queried directly — not Home Assistant), the time range, and the query in short form; answer the question, do not paste raw rows.

## Safety

- Read-only skill: never issue mutating relay or service calls.
- For write intent, hand off to the owning skill; unfamiliar writes go through `ha-nova:fallback` first.

- **Read-only by contract**: this skill never constructs an INSERT, DELETE, DROP, or any schema change against an external store. If the user asks for one, refuse and point at the store's own tooling.
- Credentials live in the user's environment only. Never echo a token, never write one into a file, never ask for one in chat.
- The relay is not involved in these queries: say so, so the user knows their data path.

## Guardrails

- Always bound the time range; always aggregate server-side.
- Never guess an `entity_id` or measurement name — resolve, then query.
- Never present external data as if it came from Home Assistant.

Review the source

Skill source recorded

Skill instructions are recorded. This is not a runtime test, safety guarantee or compatibility certification.

Review before install: Avoid automatic install

License: MIT

Dependency or permission surface needs review
Permission surface may require sandboxing
Low GitHub adoption signal
AI review approval is missing
Quality score needs review
Permission surface needs review: secrets or environment access, shell or command execution
GitHub adoption: 21 GitHub stars
Stars/forks activity: 21 stars, 1 forks; issue activity unavailable in current metadata
Dependency/runtime risk: command execution surface, credential or environment access
Permission surface: secrets or environment access, shell or command execution
Review status: AI review approval is missing

Open full audit

Listed tools are metadata hints, not tested compatibility. Agent prompts are suggested handoffs.

Start with one small task

1Read the source. Confirm the input, expected output, dependencies and permissions.
2Ask your agent for a plan. Approve setup and any costs before running a small isolated test.
3

Source & usage notes

IndexedStatic Checked

Repository metadata and review signals are advisory. Popularity, source discovery and successful execution are different facts.

Source repository: markusleben/ha-nova
License: MIT
Version: Unknown
Last GitHub push: Sep 13, 2026
Registry updated: Sep 14, 2026
Instruction path: skills/external-sources/SKILL.md @ 8e63c4ed2bd0

Version reported in registry metadata; check source releases before relying on it.

Quality

55/100

Promising

Trust

55/100

Agent access

This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.

Open install API LLM text format Open manifest Auto-resolve Plan

More details

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    "eval": "https://www.openagentskill.com/api/agent/evals?slug=markusleben-external-sources&task=Use%20external-sources%20in%20an%20agent%20workflow&max_risk=medium",
    "resolve": "https://www.openagentskill.com/api/agent/resolve?task=Use%20external-sources%20in%20an%20agent%20workflow&agent=codex&max_risk=medium",
    "receipt": "https://www.openagentskill.com/api/agent/receipt?task=Use%20external-sources%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text",
    "install": "https://www.openagentskill.com/api/skills/markusleben-external-sources/install",
    "manifest": "https://www.openagentskill.com/api/registry/manifest/markusleben-external-sources"
  }
}

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Creator: markusleben
Source: markusleben/ha-nova
Indexed by: OpenAgentSkill community index

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This Registry indexed listing is attributed to markusleben but is not marked official yet. Claim it to add a verified owner signal and make future launch, install, and audit updates easier to trust.

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[![Listed on OpenAgentSkill](https://www.openagentskill.com/api/badge/markusleben-external-sources?metric=listed&label=Listed)](https://www.openagentskill.com/skills/markusleben-external-sources?ref=github&utm_source=github&utm_medium=referral&utm_campaign=creator_badge)
[![OpenAgentSkill Trust](https://www.openagentskill.com/api/badge/markusleben-external-sources?metric=trust&label=Trust)](https://www.openagentskill.com/skills/markusleben-external-sources?ref=github&utm_source=github&utm_medium=referral&utm_campaign=creator_badge)
[![OpenAgentSkill Audit](https://www.openagentskill.com/api/badge/markusleben-external-sources?metric=audit&label=Audit)](https://www.openagentskill.com/skills/markusleben-external-sources/audit)
[![Agent Proven](https://www.openagentskill.com/api/badge/markusleben-external-sources?metric=proven&label=Agent%20Proven)](https://www.openagentskill.com/skills/markusleben-external-sources?ref=github&utm_source=github&utm_medium=referral&utm_campaign=creator_badge)

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