Evolving The Data Model
TriliumNext/Trilium
A skill your agent uses when adding a DB migration or a new column/field to a Becca entity in Trilium ("add a migration", "new column on notes/attributes", "ALTER TABLE", "add a field to…
Agent skill
Oce Cost Browser
by datadrivenconstruction in datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction
Browse and search the OpenConstructionERP cost database: classification tree, SQL and semantic search, autocomplete, certainty badges, and the resource catalog.
Install Oce Cost Browser
$ npx skills add datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction --skill oce-cost-browser -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction oce-cost-browser --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction.git skills-src && mkdir -p .claude/skills && cp -r skills-src/6_OpenConstructionERP/oce-cost-browser .claude/skills/oce-cost-browser && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "oce-cost-browser" agent skill from https://github.com/datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction/tree/main/6_OpenConstructionERP/oce-cost-browser into .claude/skills/oce-cost-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "oce-cost-browser", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction/tree/main/6_OpenConstructionERP/oce-cost-browserType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction --skill oce-cost-browser -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction oce-cost-browser --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction.git skills-src && mkdir -p .agents/skills && cp -r skills-src/6_OpenConstructionERP/oce-cost-browser .agents/skills/oce-cost-browser && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "oce-cost-browser" agent skill from https://github.com/datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction/tree/main/6_OpenConstructionERP/oce-cost-browser into .agents/skills/oce-cost-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "oce-cost-browser", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction --skill oce-cost-browser -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction oce-cost-browser --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/6_OpenConstructionERP/oce-cost-browser .cursor/skills/oce-cost-browser && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "oce-cost-browser" agent skill from https://github.com/datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction/tree/main/6_OpenConstructionERP/oce-cost-browser into .cursor/skills/oce-cost-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "oce-cost-browser", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction.git --path 6_OpenConstructionERP/oce-cost-browser--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction --skill oce-cost-browser -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction oce-cost-browser --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/6_OpenConstructionERP/oce-cost-browser .gemini/skills/oce-cost-browser && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "oce-cost-browser" agent skill from https://github.com/datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction/tree/main/6_OpenConstructionERP/oce-cost-browser into .gemini/skills/oce-cost-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "oce-cost-browser", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction oce-cost-browserInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction --skill oce-cost-browser -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction.git skills-src && mkdir -p .github/skills && cp -r skills-src/6_OpenConstructionERP/oce-cost-browser .github/skills/oce-cost-browser && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "oce-cost-browser" agent skill from https://github.com/datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction/tree/main/6_OpenConstructionERP/oce-cost-browser into .github/skills/oce-cost-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "oce-cost-browser", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction --skill oce-cost-browser -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction oce-cost-browser --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/6_OpenConstructionERP/oce-cost-browser .opencode/skills/oce-cost-browser && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "oce-cost-browser" agent skill from https://github.com/datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction/tree/main/6_OpenConstructionERP/oce-cost-browser into .opencode/skills/oce-cost-browser/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "oce-cost-browser", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
oce-cost-browser- GitHub stars
- 345
- Token cost
- ~637 tokens
- SKILL.md length
- 242 words
- Files
- 1
- Skills in repo
- 36
- Repo updated
- First seen
- Licence
- MIT
At a glance
Browse and search the OpenConstructionERP cost database: classification tree, SQL and semantic search, autocomplete, certainty badges, and the resource catalog.
- Works in 3 steps: Always filter by region — the same code… → Trust the tree over free-text for… → Treat rate = 0 on VN/ID as "not yet…
- A user wants to explore cost data without building a BOQ yet
- SKILL.md covers The cost database (2026), Browsing paths, Classification tree and Certainty & variants, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Oce Cost Browser is an agent skill from datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction. Browse and search the OpenConstructionERP cost database: classification tree, SQL and semantic search, autocomplete, certainty badges, and the resource catalog. Use when a user wants to explore cost data without building a BOQ yet.
Its SKILL.md is about 640 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Databases, covering SQL. It works with SQL and Qdrant. The repository describes itself as: 221 AI skills for construction: BIM analysis, cost estimation, scheduling, document control, and automation with Claude Code. The licence is MIT.
When your agent uses it
- A user wants to explore cost data without building a BOQ yet
- Tasks that involve SQL
Example prompts
- “/oce-cost-browser”
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- Always filter by region — the same code exists in several bases with different prices.
- Trust the tree over free-text for browsing; use free-text for finding.
- Treat rate = 0 on VN/ID as "not yet priced", not as free work.
What it can do on your machine
Read from SKILL.md and the folder at commit ce45bbf. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Oce Cost Browser loads about 637 tokens when it runs. Until then it costs about 62 tokens; SKILL.md has 242 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction at commit ce45bbf, republished under its MIT licence (© datadrivenconstruction). 242 words, ~637 tokens.
Download SKILL.mdSave it as
.claude/skills/oce-cost-browser/SKILL.md (or your agent's skills folder).- name
- oce-cost-browser
- description
- Browse and search the OpenConstructionERP cost database: classification tree, SQL and semantic search, autocomplete, certainty badges, and the resource catalog. Use when a user wants to explore cost data without building a BOQ yet.
Cost Browser in OpenConstructionERP
The cost database (2026)
Eight national bases (78,228 positions) plus 30 global markets, each in the 95-column CWICR master schema, with 26 language editions and 48 PPP-repriced resource catalogs per national base.
Browsing paths
| Path | Endpoint | Purpose |
|---|---|---|
| Base picker | GET /api/v1/costs/base-catalog | list families, variants, currencies, positions, loaded badge |
| List / search | GET /api/v1/costs/?region=...&q=...&limit=... | SQL keyword search (works without Qdrant) |
| Tree | GET /api/v1/costs/category-tree/?region=... | collection → department → section → subsection → category |
| Item detail | GET /api/v1/costs/{id} | full components[] breakdown + metadata + variants |
| Autocomplete | GET /api/v1/costs/autocomplete?q=... | fast typeahead for the BOQ editor |
| Semantic | /qdrant-search (Qdrant) | BGE-M3 multilingual ranking across cwicr_<lang>_v3 collections |
Classification tree
Every item carries classification{} built from the parquet:
collection (source, e.g. "İnşaat")
└─ department (discipline, e.g. "İnşaat")
└─ section (chapter, e.g. "LAVABOLAR")
└─ subsection
└─ category (normalized type, e.g. "CONSTRUCTION WORK")Chinese positions may show partial classification (source scope) — that is honest, not a bug.
Certainty & variants
- Some items carry abstract-resource variants (e.g. concrete grade pickers): the item detail exposes
variants[]with per-variant prices; picking one replaces the BOQ line description/price. certaintybadges grade how confidently an item matches a BIM element — review low-certainty picks.
Resource catalog
The catalog module stores the compact per-market catalogs (resource_code, name, type, category, unit, price_avg/min/max, currency, usage_count, classification under specifications). Coefficient bases (VN, ID) seed an editable resource price sheet here — that is how they become estimable.
Best practices
- Always filter by region — the same code exists in several bases with different prices.
- Trust the tree over free-text for browsing; use free-text for finding.
- Treat
rate = 0on VN/ID as "not yet priced", not as free work.
© datadrivenconstruction, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in 6_OpenConstructionERP/oce-cost-browser of datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction.
Open the folder on GitHubat commit ce45bbf
Compare with similar skills
Oce Cost Browser next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Oce Cost Browser this skilldatadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction | 345 | — | ~637 | Automated safety check: Pass | MIT | |
| Evolving The Data ModelTriliumNext/Trilium | 38k | — | ~2.1k | Automated safety check: Pass | AGPL-3.0 | |
| Safe SQL Executionsupabase/supabase | 111k | — | ~4.2k | Automated safety check: Pass | Apache-2.0 | |
| Citus Backportcitusdata/citus | 13k | — | ~3.2k | Automated safety check: Pass | AGPL-3.0 | |
| SQL Database Support for pRESTprest/prest | 4.6k | — | ~1.6k | Automated safety check: Pass | MIT | |
| StarRocks SQL Doc Auto-FixStarRocks/starrocks | 12k | — | ~7.6k | Automated safety check: Notes | Apache-2.0 |
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Categories
Questions about Oce Cost Browser
What does Oce Cost Browser do?
Browse and search the OpenConstructionERP cost database: classification tree, SQL and semantic search, autocomplete, certainty badges, and the resource catalog. Oce Cost Browser is an agent skill from datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction. Browse and search the OpenConstructionERP cost database: classification tree, SQL and semantic search, autocomplete, certainty badges, and the resource catalog.
When should I use Oce Cost Browser?
Oce Cost Browser fits situations like: A user wants to explore cost data without building a BOQ yet; tasks that involve SQL.
How do I install Oce Cost Browser in Claude Code?
Run `npx skills add datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction --skill oce-cost-browser -a claude-code`. Or copy the skill folder (6_OpenConstructionERP/oce-cost-browser in datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction) into .claude/skills/oce-cost-browser in your project. Claude Code loads it when a task matches its description.
How do I install Oce Cost Browser in Codex?
Run `npx skills add datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction --skill oce-cost-browser -a codex`. Or copy the skill folder (6_OpenConstructionERP/oce-cost-browser in datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction) into .agents/skills/oce-cost-browser in your project. Codex loads it when a task matches its description.
Can I use Oce Cost Browser in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction --skill oce-cost-browser -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/oce-cost-browser, .gemini/skills/oce-cost-browser, .github/skills/oce-cost-browser and .opencode/skills/oce-cost-browser in your project.
What does Oce Cost Browser need to run?
SKILL.md names no scripts, command-line tools or credentials: Oce Cost Browser is instructions for the agent only.
Does Oce Cost Browser access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Oce Cost Browser safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Oce Cost Browser use?
Oce Cost Browser is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Oce Cost Browser use?
About 637 tokens (SKILL.md is roughly 2.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Oce Cost Browser?
Skills that share tags, products or a category with Oce Cost Browser: Evolving The Data Model (TriliumNext/Trilium, 38k stars), Safe SQL Execution (supabase/supabase, 111k stars), Citus Backport (citusdata/citus, 13k stars) and SQL Database Support for pREST (prest/prest, 4.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Oce Cost Browser?
datadrivenconstruction (a GitHub user) maintains it in datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction, which has 345 GitHub stars. The repository holds 36 skills in this directory. The repository was last updated on August 22, 2026.
Source: datadrivenconstruction/DDC_Skills_for_AI_Agents_in_Construction on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.