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/major7apps/tiingo-mcp/agents-mdgit clone --depth 1 https://github.com/major7apps/tiingo-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/major7apps/tiingo-mcp/agents-md)<a href="https://agentmods.dev/instructions/major7apps/tiingo-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/major7apps/tiingo-mcp/agents-md.svg" alt="Measured on agentmods" 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 | $0.00748 | $0.00748 |
| Opus 5 | $0.00374 | $0.00374 |
| Sonnet 5 | $0.00150 | $0.00150 |
| Haiku 4.5 | $0.00075 | $0.00075 |
Grade A, and why
tiingo-mcp AGENTS.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 5d 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 — 58 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
This is the canonical repository guide for every coding agent and harness working on tiingo-mcp. CLAUDE.md is a symlink to this file.
Project map
Following OpenAI Harness Engineering, this file is a concise map; use the focused references for durable detail.
- ARCHITECTURE.md — module boundaries, REST safety, upstream WebSocket lifecycle, and process ownership.
- API_SURFACE.md — exact tool-to-route/access/test matrix and excluded surfaces.
- QUALITY.md — local/CI gates, coverage, deterministic/live evidence, and documentation contracts.
- README.md — installation, MCP configuration, tools, entitlements, resources, and prompts.
- CHANGELOG.md — released and unreleased user-facing changes.
Public contract
- Expose 38 tools while preserving the original 17 tool names, required inputs, omission behavior, and results; four approved optional
columnsadditions are the only legacy descriptor deltas. - Preserve three fixed resources, one resource template, five prompts, stdio transport, JSON text compatibility, structured content, and
TIINGO_API_KEYauthentication. - Tiingo WebSockets are upstream data connections exposed through four finite tools. Do not describe or implement an MCP WebSocket or Streamable HTTP transport.
Operating rules
- Keep the implementation Rust-only. Do not reintroduce Python packaging, virtual environments, or
uvxcompatibility. - Keep stdout protocol-only. Send diagnostics to stderr and never log credentials or authorization headers.
- Make surgical changes and preserve unrelated user work. Inspect
git statusbefore editing. - Do not run ignored, quota-consuming live tests without explicit authorization.
- Do not publish crates, create or push tags, create releases, or upload MCPB bundles without explicit authorization.
Commands
cargo fmt --check
cargo clippy --all-targets --all-features -- -D warnings
cargo test --all-targets --locked
cargo llvm-cov --all-targets --all-features --locked --fail-under-lines 93 --summary-only
cargo build --release --locked
cargo deny check all
cargo run --quiet -- --version
dist plan
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.
- 5d ago First seen · 58 lines · 748 tokens per session scan A 2dbe4a15ff6c
tiingo-mcp AGENTS.md is an instructions file published in the GitHub repository major7apps/tiingo-mcp (10 stars, last pushed 6d ago), licensed MIT. It adds 748 tokens to every session, about $0.0037 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.
Other instructions, from other repositories
trading-ops CLAUDE.md
Instructions for l3lackcurtains/trading-ops, covering trading-ops — project rules, authoritative protocols, hard boundaries (never cross), self-improvement loop (applies to every command) and automation scripts.
jesse AGENTS.md
AGENTS.md instructions for jesse-ai/jesse, covering jesse repository guide for ai agents, skills, key characteristics, central framework and technology stack.
gmgn-skills CLAUDE.md
Claude Code instructions for GMGNAI/gmgn-skills, covering claude.md, critical rule — read this first, project overview, available skills and quick decision guide.
awesome-quant AGENTS.md
AGENTS.md instructions for wilsonfreitas/awesome-quant, covering agents.md, project overview, architecture, work tracking and planning and commands.
tradingview-mcp-server CLAUDE.md
Instructions for fiale-plus/tradingview-mcp-server, covering claude.md, project overview, build and development commands, running a single test file and development workflow.
martex-quant CLAUDE.md
Instructions for martex-dev/martex-quant, covering session start — read these first, project instructions, ai trading bot project - master instructions, role and project objective.