HydraDB is a distributed graph database that stores durable graph data in S3-compatible object storage while separate compute nodes handle queries and indexing. It is for applications that need graph queries through OpenCypher, Neo4j-compatible Bolt clients, or HTTP APIs. The catalogue add-ons operate HydraDB workflows.
Borrowing it
Nothing to install: this file belongs to hydra-db/hydradb. 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/hydra-db/hydradb/main/AGENTS.mdgit clone --depth 1 https://github.com/hydra-db/hydradbWrote 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/instructions/hydra-db/hydradb/agents-md)<a href="https://agentmods.dev/instructions/hydra-db/hydradb/agents-md"><img src="https://agentmods.dev/badge/instructions/hydra-db/hydradb/agents-md/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/instructions/hydra-db/hydradb/agents-md"><img src="https://agentmods.dev/badge/instructions/hydra-db/hydradb/agents-md.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 | $0.04662 | $0.04662 |
| Opus 5.5 | $0.01865 | $0.01865 |
| Sonnet 5.5 | $0.00932 | $0.00932 |
| Haiku 4.5 | $0.00466 | $0.00466 |
Grade F, and why
hydradb AGENTS.md scanned grade F with 4 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
sudo apt-get update Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
rm -rf -- "$ROOT" Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh The source is not reproduced here
Licensed AGPL-3.0
The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
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.
- 12d ago Changed · -1 lines · -7 tokens per session e37b00c38404
- 14d ago Changed · +2 tokens per session 4d116007346b
- 1mo ago Changed · -40 lines · -443 tokens per session d029e01a65b5
- 2mo ago First seen · 440 lines · 5,110 tokens per session scan F 0fc91e36bc53
hydradb AGENTS.md is an instructions file published in the GitHub repository hydra-db/hydradb (13,075 stars, last pushed 3d ago), licensed AGPL-3.0. It adds 4,662 tokens to every session, about $0.0186 per session on Opus 5.5. A static security scan graded it F with 4 findings (asks for root, downloads and executes remote code, recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
hydradb AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| hydradb AGENTS.mdhydra-db/hydradb | Instructions file | 13k | 3d ago | AGPL-3.0 | F | 4,662 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |