Borrowing it
Nothing to install: this file belongs to major7apps/tiingo-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/major7apps/tiingo-mcp/main/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/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/major7apps/tiingo-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/major7apps/tiingo-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 | $0.00783 | $0.00783 |
| Opus 5.5 | $0.00313 | $0.00313 |
| Sonnet 5.5 | $0.00157 | $0.00157 |
| Haiku 4.5 | $0.00078 | $0.00078 |
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 1mo 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 — 59 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.
- packaging/README.md — installer builds, Homebrew setup, and release checks.
- 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. Approved optional REST controls and broader intraday intervals are the only legacy input-schema extensions; API_SURFACE.md records the exact 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.
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.
- 1mo ago Changed · +1 lines · +23 tokens per session 2a0d3cf052ff
- 1mo ago Changed · +12 tokens per session fcdbbbf2acd7
- 2mo 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 (11 stars, last pushed 5d ago), licensed MIT. It adds 783 tokens to every session, about $0.0031 per session on Opus 5.5. 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.
tiingo-mcp AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| tiingo-mcp AGENTS.mdmajor7apps/tiingo-mcp | Instructions file | 11 | 5d ago | MIT | A | 783 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |