QuantGist_MCP: Instructions file for Codex

AGENTS.md

QuantGist_MCP AGENTS.md is an instructions file for Codex, OpenCode from QuantGist-Technologies/QuantGist_MCP. It costs 940 tokens per session, scanned A, original, MIT.

A set of coding instructions for the QuantGist MCP server, a program that connects an AI assistant to market data and account-management tools through a standard tool interface.

In plain words
What is it for?
Use it when adding or changing tools, working with market or earnings data, handling webhooks or API keys, updating the server, or checking its command-line and HTTP versions.
Why use it?
It gives developers the project layout, safety rules, commands, and checks needed to change the server without accidentally making account changes or breaking either connection method.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions CLAUDE.md; mentions AGENTS.md.

This is QuantGist-Technologies/QuantGist_MCP's own configuration. It tells Codex and OpenCode how to work on QuantGist_MCP itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything QuantGist_MCP configures →

Reuse

Borrowing it

Nothing to install: this file belongs to QuantGist-Technologies/QuantGist_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.

Copy the file
curl -O https://raw.githubusercontent.com/QuantGist-Technologies/QuantGist_MCP/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/QuantGist-Technologies/QuantGist_MCP

Made for: Codex, OpenCode.

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Per session 940 This file is loaded in full into every session.
When invoked 940 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00940 $0.00940
Opus 5.5 $0.00376 $0.00376
Sonnet 5.5 $0.00188 $0.00188
Haiku 4.5 $0.00094 $0.00094

Measured 2mo ago against content hash 2c2cc2efaac8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

QuantGist_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 2mo 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.

AGENTS.md · 55 lines

How it starts

The opening of the file, as written. The whole thing — 55 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — quantgist-mcp

QuantGist MCP server: 22 tools — 15 read-only (macro events, earnings, markets, discovery) plus 7 account tools (webhooks, API keys, billing) — over two transports from one codebase: stdio (quantgist-mcp) and streamable-HTTP (quantgist-mcp-http). Thin client over https://api.quantgist.com/v1. Python 3.10+, low-level mcp SDK.

Consent model: mutating tools (create_webhook, delete_webhook, create_api_key, create_checkout_session) require confirm: true; without it they make no API call and return an approval preview. create_checkout_session never charges — it returns a Stripe-hosted checkout URL a human must open and complete. Once-only secrets ship with a store-securely warning.

CLAUDE.md is the full source of truth (architecture, tool list, release & deploy, rules). Read it before non-trivial work. This file is the short version for any agent.

Commands

uv sync
uv run quantgist-mcp                 # stdio server (needs QUANTGIST_API_KEY)
uv run quantgist-mcp-http            # HTTP server (PORT/HOST env; /health + /mcp)
uvx ruff check src/                  # lint
uv build                             # sdist + wheel

Test against prod with a real key before shipping: build + clean-install, then a full MCP handshake (initialize → list_tools → call_tool) over both transports.

Layout

src/quantgist_mcp/: server.py (tools, dispatch, stdio main), http.py (HTTP transport), api.py (async httpx client + per-request key contextvar), formatters.py (dicts → text). All tool schemas/handlers live in server.py (no tools/ subpackage).

Invariants — do NOT regress

  • HTTP serves the MCP app at the mount ROOT (Mount("/", _root)), never Mount("/mcp") — the sub-mount adds a 307 redirect that breaks strict gateways (Smithery → 502). POST /mcp must be 200.
  • Every tool handler returns a (text, structured_dict) tuple; the dict matches the tool's outputSchema. Errors return CallToolResult(isError=True) (not a tuple).
  • Keep on every tool: description + per-param descriptions, title, annotations, outputSchema.
  • Keep the empty list_resources/list_prompts handlers (avoids "method not found" in scans).
  • Never hardcode the API key (env for stdio; X-API-Key header for HTTP).

Read the full file on GitHub · 55 lines

Changes

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.

  1. 2mo ago First seen · 55 lines · 940 tokens per session scan A 2c2cc2efaac8

Subscribe to this mod's changes

QuantGist_MCP AGENTS.md is an instructions file published in the GitHub repository QuantGist-Technologies/QuantGist_MCP (2 stars, last pushed 3mo ago), licensed MIT. It adds 940 tokens to every session, about $0.0038 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.

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