Borrowing it
Nothing to install: this file belongs to ctxpipe-ai/ctxpipe. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/ctxpipe-ai/ctxpipe/main/.agents/skills/preview-env/hydrate/SKILL.mdgit clone --depth 1 https://github.com/ctxpipe-ai/ctxpipeWrote 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/ctxpipe-ai/ctxpipe/hydrate)<a href="https://agentmods.dev/skills/ctxpipe-ai/ctxpipe/hydrate"><img src="https://agentmods.dev/badge/skills/ctxpipe-ai/ctxpipe/hydrate/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/ctxpipe-ai/ctxpipe/hydrate"><img src="https://agentmods.dev/badge/skills/ctxpipe-ai/ctxpipe/hydrate.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00031 | $0.01627 |
| Opus 5.5 | $0.00012 | $0.00651 |
| Sonnet 5.5 | $0.00006 | $0.00325 |
| Haiku 4.5 | $0.00003 | $0.00163 |
Grade A, and why
preview-env-hydrate scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
Workspace **revision** prepare: `workspace-hydrate` rebuilds the projection (Postgres knowledge units, graph, embeddings) and `workspace-index` the code index. Not `POST /repositories`. [Harness](../harness.md) is `PASS` How it starts
The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.
preview-env hydrate
Workspace revision prepare: workspace-hydrate rebuilds the projection (Postgres knowledge units, graph, embeddings) and workspace-index the code index. Not POST /repositories. Harness is PASS; worker and codesearch were woken. Flow format: run-setup. Use browser plus curl with a cookie jar exported from account A's session (COOKIE_JAR).
HYD-1 New Workspace reaches an active projection
Requires ONB-4 (Workspace 1 from the knowledge template). Steps
- Poll
curl -fsS -b "$COOKIE_JAR" "$BASE_URL/$orgSlug/api/v1/workspaces/$workspace1Slug"every 5 s; recordhydrateStatus,hydrateError,desiredSha,activeProjectionSha. - When
ready,GET …/files/tree(expect 200, not 409) and open Files. - Compare the Settings hydrate chip with the JSON.
Expect (UI) chip Hydrate ready matching the JSON; Files shows the tree with AGENTS.md, the 4 knowledge files, the malformed file, and .agents/skills/ctxpipe-knowledge/SKILL.md from the bootstrap commit.
Expect (backend) workspace_commit_projections row for the head SHA; exactly 4 workspace_knowledge_units rows (one per valid knowledge file; AGENTS.md, .agents/, and the malformed file have none); activeProjectionSha equals desiredSha; workspace-hydrate then workspace-index runs succeeded; the bootstrap commit from ONB-4 is part of the projected revision.
Budget 60 s / 3 min, Workspace created to hydrateStatus === "ready". If the worker deploy timestamp did not move after enqueue, wake again (harness) and keep polling.
Evidence HYD-1-1.png (Settings chips), HYD-1-2.png (Files); JSON status; trace and openworkflow.run.id of both runs.
HYD-2 Malformed file is skipped, not fatal
Requires HYD-1; knowledge/operations/legacy-migration-notes.md from the knowledge template (run-setup).
Steps
- Open Settings on the Workspace page.
- In the Hydrate skipped 1 file notice, select
knowledge/operations/legacy-migration-notes.md. - Check the knowledge units for that path.
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.
- 4d ago First seen · 73 lines · 31 tokens per session scan A d4c2736a6288
preview-env-hydrate is a skill published in the GitHub repository ctxpipe-ai/ctxpipe (27 stars, last pushed today), licensed MIT. It adds 31 tokens to every session and 1,627 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-21.
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