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 agentmods add instructions/fiberplane/mcp-lite/agents-mdgit clone --depth 1 https://github.com/fiberplane/mcp-liteWhat 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 | $0.00622 | $0.00622 |
| Opus 5 | $0.00311 | $0.00311 |
| Sonnet 5 | $0.00124 | $0.00124 |
| Haiku 4.5 | $0.00062 | $0.00062 |
Grade A, and why
mcp-lite AGENTS.md 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 2d 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.
- PRs: include description, motivation, and any breaking changes. Link issues. Add before/after snippets or curl examples for protocol changes. How it starts
The opening of the file, as written. The whole thing — 46 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Repository Guidelines
Project Structure & Module Organization
- Root: Bun monorepo with workspaces in
packages/*andplayground. - Core library:
packages/core- Source:
packages/core/src - Tests:
packages/core/tests/integration/*.test.ts - Build scripts:
packages/core/scripts
- Source:
- Create MCP Lite CLI:
packages/create-mcp-lite- Source:
packages/create-mcp-lite/src - Tests:
packages/create-mcp-lite/tests/**/*.test.ts - Build scripts:
packages/create-mcp-lite/scripts
- Source:
- Playground app:
playground/minimal-server.ts(Hono + MCP HTTP transport) - Examples:
examples/*- These can all run with bun, and test integration of
packages/core(mcp-lite) with various other libraries.
- These can all run with bun, and test integration of
Build, Test, and Development Commands
- Install deps:
bun install - Build all packages:
bun run build - Type-check all:
bun run typecheck - Lint/format (Biome):
bun run lint - Test all (Bun):
bun test - Per-package example:
bun run --filter=core build(orcd packages/core && bun run build)
Coding Style & Naming Conventions
- Language: TypeScript (ESM). Prefer explicit exports.
- Formatting: enforced by Biome; run
bun run lintbefore pushing. - Files: kebab-case for multi-word files (e.g.,
transport-http.ts). - Classes:
PascalCase(e.g.,McpServer). Functions/vars:camelCase. - Types/interfaces:
PascalCase; constantsSCREAMING_SNAKE_CASE.
Testing Guidelines
- Framework: Bun.
- Location: place tests under
packages/<name>/tests/**and name as*.test.ts. - Run:
bun test(all). Run all test files with "foo" or "bar" in the file namebun test foo bar. Run all test files, only including tests whose names includes "baz"bun test --test-name-pattern baz. - Write integration tests for public behavior (HTTP transport, JSON-RPC). Favor black-box tests over internals.
Commit & Pull Request Guidelines
- Commits: concise, imperative subject; scope by package when relevant (e.g.,
core: add StreamableHttpTransport validation). - PRs: include description, motivation, and any breaking changes. Link issues. Add before/after snippets or curl examples for protocol changes.
- Requirements: green tests, lint clean, typecheck clean. Update docs (
README.md, examples) when APIs 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.
- 2d ago First seen · 46 lines · 622 tokens per session scan A c1a73fad502e
mcp-lite AGENTS.md is an instructions file published in the GitHub repository fiberplane/mcp-lite (117 stars, last pushed 10mo ago), licensed MIT. It adds 622 tokens to every session, about $0.0031 per session on Opus 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 2026-08-30.
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