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tako-mcp: Instructions file for Codex

AGENTS.md

tako-mcp AGENTS.md is an instructions file for Codex, OpenCode from TakoData/tako-mcp. It costs 3,607 tokens per session, scanned A, original, MIT.

Project instructions for Tako MCP, a TypeScript server that lets AI agents access Tako's knowledge base of data visualizations.

In plain words
What is it for?
Use them when developing the Cloudflare Worker, running it locally, deploying staging or production, or checking the tool registry and smoke tests.
Why use it?
They collect the commands and checks needed to install, run, test, validate, and deploy the server safely.

Instructions file for CodexOpenCode

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

This is TakoData/tako-mcp's own configuration. It tells Codex and OpenCode how to work on tako-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 tako-mcp configures →

not rated 6repo changed today A scan 3,607 tokens original MIT
View source ↗ TakoData/tako-mcp docs.tako.com
Reuse

Borrowing it

Nothing to install: this file belongs to TakoData/tako-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/TakoData/tako-mcp/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/TakoData/tako-mcp

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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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.

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Per session 3,607 This file is loaded in full into every session.
When invoked 3,607 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 $0.03607 $0.03607
Opus 5.5 $0.01443 $0.01443
Sonnet 5.5 $0.00721 $0.00721
Haiku 4.5 $0.00361 $0.00361

Measured today against content hash 4f41441947e4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tako-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 today.

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 · 145 lines

How it starts

The opening of the file, as written. The whole thing — 145 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Project Overview

Tako MCP Server — an MCP (Model Context Protocol) server that provides AI agents access to Tako's knowledge base of 100K+ data visualizations.

The implementation is a single Cloudflare Workers TypeScript server (workers/) deployed at mcp.tako.com (prod) and mcp.staging.tako.com (staging). This is the canonical Tako MCP — all tool work lands here.

Build & Run

Hosted Worker (TypeScript)

cd workers

# Install
npm ci

# Local dev (in-memory, no Cloudflare deploy)
npm run dev

# Deploy (requires CF auth)
npm run deploy:staging
npm run deploy:production

# Verification
npm run typecheck
npm test
npm run registry:check     # validate registry/server.json + _registry.ts have no drift
SMOKE_BASE_URL=https://mcp.staging.tako.com TAKO_SMOKE_API_TOKEN=... npm run smoke

Architecture

Hosted (Cloudflare Workers) — workers/

  • Framework: @modelcontextprotocol/sdk with StreamableHTTPServerTransport
  • Runtime: Cloudflare Workers (TypeScript, nodejs_compat flag)
  • Endpoints: two path-selected MCP surfaces — POST /mcp (generic, anonymous tier allowed) and POST /mcp/chatgpt (OAuth-only, the surface submitted to OpenAI) — plus GET /health. The request path picks the surface; nothing reads the client User-Agent (workers/src/surface.ts).
  • Auth: Authorization: Bearer <TAKO_API_TOKEN> extracted at request boundary, forwarded to Django as X-API-Key; OAuth 2.1 flow for Claude.ai / ChatGPT
  • Tool registry: auto-generated from workers/src/tools/*.ts via workers/scripts/gen-registry.ts; outputs workers/src/tools/_registry.ts, registry/server.json, registry/lhm.plugin.json, docs/TOOLS.md and workers/src/generated/skills.ts in lockstep (CI checks all five for drift)
  • Skills: /mcp serves the skills/ directory through the MCP Skills extension (SEP-2640): skills/list, skills/get and skill://<name>/SKILL.md resources. A connection gets only the skills whose every named tool it registers, so a default /mcp gets tako-search, and a connection with no skills declares neither the extension nor resources. /mcp/chatgpt serves no skills; ChatGPT gets them from the plugin zip (chatgpt-plugin/build.sh).
  • CI: .github/workflows/workers-ci.yml (typecheck + tests on PRs), workers-deploy.yml (staging on push to main; production on published GitHub Release, gated by the production environment; manual workflow_dispatch for either env), workers-smoke.yml (auto-smoke after successful staging deploys)

Read the full file on GitHub · 145 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. today Changed · +3 lines · +274 tokens per session 4f41441947e4
  2. 2d ago Changed · +5 lines · +416 tokens per session 88a2253ac4f1
  3. 1mo ago Changed · +155 tokens per session 81e7f4eb23a2
  4. 1mo ago First seen · 137 lines · 2,762 tokens per session scan A a9f77e94022c

Subscribe to this mod's changes

tako-mcp AGENTS.md is an instructions file published in the GitHub repository TakoData/tako-mcp (6 stars, last pushed today), licensed MIT. It adds 3,607 tokens to every session, about $0.0144 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.

FREDai-agentsclaudecloudflare-workersdata-visualizationfinancial-data
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