Borrowing it
Nothing to install: this file belongs to Rizz22/fireflyiii-mcp-daften. 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/Rizz22/fireflyiii-mcp-daften/main/AGENTS.mdgit clone --depth 1 https://github.com/Rizz22/fireflyiii-mcp-daftenWrote 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/rizz22/fireflyiii-mcp-daften/agents-md)<a href="https://agentmods.dev/instructions/rizz22/fireflyiii-mcp-daften/agents-md"><img src="https://agentmods.dev/badge/instructions/rizz22/fireflyiii-mcp-daften/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/rizz22/fireflyiii-mcp-daften/agents-md"><img src="https://agentmods.dev/badge/instructions/rizz22/fireflyiii-mcp-daften/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 | $0.07632 | $0.07632 |
| Opus 5 | $0.03816 | $0.03816 |
| Sonnet 5 | $0.01526 | $0.01526 |
| Haiku 4.5 | $0.00763 | $0.00763 |
Grade A, and why
fireflyiii-mcp-daften 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 8d 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.
- **Always verify new or changed tool fields against the Firefly III OpenAPI spec before implementing.** Fetch the YAML with `curl -s "https://api-docs.firefly-iii.org/firefly-iii-6.5.5-v1.yaml" -A "Mozilla/5.0"` and gre How it starts
The opening of the file, as written. The whole thing — 553 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MCP server for Firefly III — Project Documentation
Project Overview
MCP server for Firefly III is a TypeScript implementation of an MCP (Model Context Protocol) server that bridges Claude Code to a running Firefly III personal finance instance. This is a greenfield, open-source project (MIT license).
Users can query their finances in natural language through Claude, getting answers about accounts, transactions, budgets, categories, bills, piggy banks, and financial insights without writing queries themselves.
Current state: 140 tools across 14 groups, full CRUD, stdio and HTTP (OAuth or PAT) transports, tool filtering via --preset/--groups/--read-only.
Architecture at a glance
MCP client (Claude Code / Desktop / ...)
│
│ stdio HTTP (StreamableHTTP, stateless)
▼ ▼
StdioServerTransport OAuth proxy (src/http.ts)
│ · /.well-known metadata, /oauth/{authorize,token,register,callback}
│ (404 instead, if FIREFLY_OAUTH_CLIENT_ID is unset — PAT-only mode)
│ · substitutes redirect_uri, Bearer guard
│ · per-request token via AsyncLocalStorage
└────────────┬────────────┘
▼
McpServer (src/server.ts)
│ registerAllTools (src/tools/index.ts)
│ · TOOL_GROUPS / PRESETS filtering, read-only proxy
▼
Tool groups (src/tools/*.ts, 14 groups / 140 tools)
· defineTool wrapper: zod validation, error formatting (src/tools/_helpers.ts)
· autocomplete prompts with per-user TTL cache
│
▼
FireflyClient (src/client.ts)
· Bearer auth, 30s timeout, FireflyError → friendly messages
│
▼
Transform layer (src/transform.ts)
· unwraps JSON:API envelopes → flat objects + pagination
│
▼
Firefly III REST API (/api/v1)
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.
- 8d ago First seen · 553 lines · 7,632 tokens per session scan A 4edeb6769314
fireflyiii-mcp-daften AGENTS.md is an instructions file published in the GitHub repository Rizz22/fireflyiii-mcp-daften (0 stars, last pushed 3d ago), licensed MIT. It adds 7,632 tokens to every session, about $0.0382 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 2026-08-31.
Other instructions, from other repositories
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.