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 skills add elevanaltd/HestAI-MCP --skill mcp-toolsgit clone --depth 1 https://github.com/elevanaltd/HestAI-MCPWrote 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/elevanaltd/hestai-mcp/mcp-tools)<a href="https://agentmods.dev/skills/elevanaltd/hestai-mcp/mcp-tools"><img src="https://agentmods.dev/badge/skills/elevanaltd/hestai-mcp/mcp-tools/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/elevanaltd/hestai-mcp/mcp-tools"><img src="https://agentmods.dev/badge/skills/elevanaltd/hestai-mcp/mcp-tools.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 | $0.00023 | $0.00683 |
| Opus 5 | $0.00012 | $0.00342 |
| Sonnet 5 | $0.00005 | $0.00137 |
| Haiku 4.5 | $0.00002 | $0.00068 |
Grade B, and why
mcp-tools scanned grade B 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 7d 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.
Unrestricted tool accessmediumExcessive agency
A wildcard tool grant or "run any command" leaves no least-privilege boundary at all.
allowed-tools: "*" What it actually says
===MCP_TOOLS=== META: TYPE::SKILL VERSION::"1.0" STATUS::ACTIVE PURPOSE::"MCP tool implementation patterns for HestAI" DOMAIN::HEPHAESTUS[tool_crafting]⊕HERMES[communication]
§1::TOOL_STRUCTURE LOCATION::src/hestai_mcp/mcp/tools/ RETURN_TYPE::dict[str,Any] PATTERN::[ "async def my_tool_async(", " required_param: str,", " optional_param: str | None = None,", ") -> dict[str, Any]:", " """Tool description."""", " # Validate inputs first", " validated = validate_param(required_param)", " # Implementation", " return {"status": "success", "data": result}" ]
§2::SESSION_TOOLS CLOCK_IN::[ PURPOSE::"Start session, returns context paths + AI synthesis", PARAMS::[role,working_dir,focus?,model?], RETURNS::[session_id,context_paths,ai_synthesis] ] CLOCK_OUT::[ PURPOSE::"Archive session transcript to OCTAVE", PARAMS::[session_id,description?], RETURNS::[archive_path,learnings] ] BIND::[ PURPOSE::"Bootstrap agent binding with low token usage", PARAMS::[role,topic?,tier?,working_dir?], RETURNS::[agent_file,skills,context_paths] ]
§3::KEY_DIRECTORIES CONTEXT::.hestai/state/context/["Living context files (PROJECT-CONTEXT, etc.)"] ACTIVE::.hestai/state/sessions/active/["Current session data (gitignored)"] ARCHIVE::.hestai/state/sessions/archive/["Compressed session archives"] NORTH_STAR::.hestai/north-star/["North Star and specs (committed, PR-controlled)"]
§4::SHARED_UTILITIES LOCATION::src/hestai_mcp/mcp/tools/shared/ MODULES::[ path_resolution.py::"Path validation and traversal prevention", security.py::"Input sanitization", fast_layer.py::"Git state and branch detection", compression.py::"OCTAVE compression helpers" ]
§5::SECURITY PATH_VALIDATION::prevent_traversal[../,symlinks] INPUT_SANITIZATION::validate_before_use ROLE_VALIDATION::allowlist_pattern["^[a-z][a-z0-9-]*$"]
§6::ASYNC_PATTERNS REQUIREMENT::all_MCP_tools_must_be_async AI_INTEGRATION::AIClient.complete_text()[optional_synthesis] ERROR_HANDLING::graceful_fallback_on_failure
===END===
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.
- 7d ago First seen · 74 lines · 23 tokens per session scan B dd2d79ea1d09
mcp-tools is a skill published in the GitHub repository elevanaltd/HestAI-MCP (0 stars, last pushed yesterday), licensed Apache-2.0. It adds 23 tokens to every session and 683 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 1 finding (unrestricted tool access). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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