Borrowing it
Nothing to install: this file belongs to Haris0059/ibu-mcp. 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/Haris0059/ibu-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/Haris0059/ibu-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/instructions/haris0059/ibu-mcp/claude-md)<a href="https://agentmods.dev/instructions/haris0059/ibu-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/haris0059/ibu-mcp/claude-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/haris0059/ibu-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/haris0059/ibu-mcp/claude-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 | $0.00583 | $0.00583 |
| Opus 5 | $0.00292 | $0.00292 |
| Sonnet 5 | $0.00117 | $0.00117 |
| Haiku 4.5 | $0.00058 | $0.00058 |
Grade A, and why
ibu-mcp CLAUDE.md scanned grade A with 0 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 9d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 40 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
What this is
A stdio MCP server (@modelcontextprotocol/sdk) exposing IBU student-portal data as tools. Entry: src/index.ts. Tool modules live in src/tools/*.ts. HTTP client and auth in src/client.ts and src/auth.ts.
Commands
npm run dev— run viatsx(no build step)npm run build—tsctodist/npm start— run built server fromdist/index.js
There is no test framework and no linter configured.
Stdio MCP — do not write to stdout
The server uses StdioServerTransport. stdout is the MCP protocol channel. Any stray console.log, process.stdout.write, or printed banner will corrupt the JSON-RPC stream and break the client. Use console.error (stderr) for all logging/debug output.
Tool naming and registration
- All MCP tool names use the
ibu_<verb>_<noun>prefix (e.g.,ibu_get_grades,ibu_mark_notification_read). - Tools are defined as entries in a domain-grouped array in
src/tools/<domain>.tswithname,description,inputSchema(JSON Schema withproperties/required), andhandler. - Register the array in
src/index.tsviaregisterTools(...). The registrar insrc/index.tsconverts the JSON Schema shape into zod and wires error handling — match the existing shape so the conversion keeps working (string properties, optionalenum,description).
Error handling convention
src/client.ts maps known HTTP statuses to user-facing messages (401 = expired JWT, 402 = unpaid fees, 403 = locked account, 301 = mandatory survey, 500 = upstream IBU issue). When adding tools, let ibufetch() raise — don't swallow these.
Gotcha: Sporadic 5xx responses from rest.ibu.edu.ba are most commonly caused by unpaid financials on the account being queried, not by a code bug. Don't add retries or "fix" 5xx handling without checking that first.
Auth tokens
IBU_ACCESS_TOKEN and IBU_USER_JWT come from the user's browser session (DevTools → Network on rest.ibu.edu.ba). The JWT expires when the session ends — a 401 means the user needs to re-copy the header, not a code change.
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.
- 9d ago First seen · 40 lines · 583 tokens per session scan A 233338dfb3a9
ibu-mcp CLAUDE.md is an instructions file published in the GitHub repository Haris0059/ibu-mcp (2 stars, last pushed 3mo ago), licensed MIT. It adds 583 tokens to every session, about $0.0029 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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