Borrowing it
Nothing to install: this file belongs to okyashgajjar/costwise-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/okyashgajjar/costwise-mcp/main/AGENTS.mdgit clone --depth 1 https://github.com/okyashgajjar/costwise-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/okyashgajjar/costwise-mcp/agents-md)<a href="https://agentmods.dev/instructions/okyashgajjar/costwise-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/okyashgajjar/costwise-mcp/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/okyashgajjar/costwise-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/okyashgajjar/costwise-mcp/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 | $0.03635 | $0.03635 |
| Opus 5 | $0.01818 | $0.01818 |
| Sonnet 5 | $0.00727 | $0.00727 |
| Haiku 4.5 | $0.00364 | $0.00364 |
Grade B, and why
costwise-mcp AGENTS.md 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 10d 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.
On Ubuntu/Debian: `sudo apt install gcc libsqlite3-dev` How it starts
The opening of the file, as written. The whole thing — 218 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Context for AI Coding Agents
Last updated by big-pickle on 2026-06-10.
V2 Foundation (in progress — branch feat/v2-foundation)
Goal: cut the dominant cost of long single sessions — Anthropic prompt-cache write/read, not model output. Evidence: a single call charged $2.95 where $2.84 was a 5-min cache write of ~455k tokens; output was only ~3.9k. The MCP cannot control when/how the client caches (breakpoints/TTL are client-owned); its only lever is reducing how many tokens ever enter the resident context window (the thing re-cached every turn). Every V2 piece serves that one goal.
Three steps:
- DONE — compact
repo_summary.BuildRepositorySummaryCompact(ks, budget, module)ininternal/retrieval/repository_summary.go: token-budgeted (reusesparseBudget), top modules by symbol count ++N morerollup, dropped the unboundedLayerschain, optionalmoduledrill-down. Tool gainedbudget+moduleparams. LegacyBuildRepositorySummary/Format()untouched. (50-module synthetic: 1192→216 tokens; capped regardless of repo size.) - DONE (code) — 3 cache-reducing tools in
internal/mcpserver/tools.go:remember(repo_path,key,fact)(durable fact →kmemoryUserNote+ per-reposession_facts.json),stash_context(repo_path,content,label?)(park large blob out of window → tiny handle; file-backedinternal/stashat<repoRoot>/.mycli-fts/stash/),recall(repo_path,query,source?,budget?)(query-scoped read of a stash by handle, or facts; hard-capped via step-1 budgeting). Stores wired intoRepoSession(Stash,FactsPath,RememberFact,RecallFacts). Chosen over compact/summarize/forget because the user requires no context drop — stash is lossless (relocates tokens, re-fetchable). All tool outputs stay tiny. New names added toclaude.goallow-list. Tests:internal/stash,internal/session/repo_session_v2_test.go. - DONE —
costwise-sessionskill (session-awareness). Teaches the model to keep the session lean (route large content through stash/recall, remember durable facts, prefer narrow retrieval). Single embedded source of truth:internal/skill/policy.md(go:embed, ~275 tok). Delivered two ways: (a) automatic/cross-IDE viaserver.WithInstructions(skill.Instructions())ininternal/mcpserver/server.go— every MCP client auto-loads it, zero install; (b) native Claude Code SKILL.md viacostwise skill {install,uninstall,print}(cmd/skill.go) writing~/.claude/skills/costwise-session/SKILL.md(or.claude/...with--local).installwrites the skill by default (opt out--no-skill);uninstallremoves it. Other IDEs rely on the instructions field +skill printfor manual placement.internal/skillis standalone (NOT in the Target interface). Tests ininternal/skill/skill_test.go.
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.
- 10d ago First seen · 218 lines · 3,635 tokens per session scan B efa72beb7b4c
costwise-mcp AGENTS.md is an instructions file published in the GitHub repository okyashgajjar/costwise-mcp (21 stars, last pushed 1mo ago), licensed MIT. It adds 3,635 tokens to every session, about $0.0182 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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