DAAS - Data As a Service

Facet (谦面) product line · the local self-hosted data platform line of FindData — one SQLite file behind a consolidated MCP server.

📖 Quick Start: QUICKSTART.md (curl → install → ask your AI) · 中文文档: README.zh-CN.md

Layered data platform for financial, economic, and statistical data — a single SQLite file (daas.db) behind a consolidated MCP server, with data fetch delegated down to the fd-open-data-mcp upstream.

What is this? A local data platform that turns Python data libraries (akshare, yfinance, edgar, edinet-tools, dartlab, world_bank_data, ckanapi) into a queryable, indicator-computing, dashboard-ready store backed by one SQLite file. You drive it through Claude Code skills (thin shells that call workflow manifests) or through the consolidated fd-daas-mcp MCP server — both paths read/write the same database.

One command → your AI agent runs the whole platform

curl -fsSL https://raw.githubusercontent.com/FindDataTechnology/fd-daas-mcp/master/install.sh | sh

That single command clones DAAS + the fd-open-data-mcp upstream, provisions both venvs, inits daas.db, and localizes .mcp.json to your paths. When it prints done: ~/code/DAAS, 160+ MCP tools and 13 product Claude Code skills are deployed and wired up — no further setup. (Exact tool count is runtime-defined — selfcheck is the source of truth; latest verified run: 161. .claude/skills/ holds 32 directories in total, of which 13 are the product skills.)

Now open the folder in your AI agent and ask in plain language:

cd ~/code/DAAS
claude

Then just say things like:

• "fetch SPY's daily OHLC and compute a 5-day SMA"

• "build a dashboard of these indicators"

• "alert me when RSI crosses 70"

• "schedule this fetch nightly"

The agent has both surfaces ready — the 160+ MCP tools across 9 groups (daas · cron · alerts · dashboard · composite · research · pdf · gateway · workflow) auto-load from .mcp.json (runtime count is authoritative — selfcheck), and the 13 product skills under .claude/skills/ are thin playbooks the agent invokes when a task matches (fd-daas-based-data-fetch handles resolve → fetch → persist, fd-daas-research orchestrates a full study, etc.).

Verify the install is healthy (or just ask the agent to run them):

fd-daas-mcp/.venv/bin/fd-daas-mcp doctor            # path + schema + row counts
fd-daas-mcp/.venv/bin/python -m daas.fd_daas_mcp.selfcheck   # tool count (runtime is authoritative; latest: 161), failed=0

A real first fetch (the agent runs the same thing when you ask it to):

uv run python .claude/skills/fd-daas-based-data-fetch/scripts/run_indicator.py SPY_ma5
sqlite3 daas.db "SELECT source, COUNT(*) FROM observations GROUP BY source"

The Quick Start commands above are verified against this repo: SPY_ma5 is a real indicator_rules row, and the fd-daas-mcp registry reports all 9 groups healthy (failed=0, skipped_optional=1 for the optional pdf group; latest verified run: 161 tools — runtime count is authoritative).

Requirements: Python 3.10+ and uv — the script installs uv itself if it's missing. Env overrides: DAAS_DEST (default ~/code/DAAS), DAAS_BRANCH (default master), FINDDATA_HOME (default ~/finddata). dartlab fetches need 3.12: uv run --python 3.12 --with dartlab .... Optional credentials (HTTP_PROXY, EDGAR_IDENTITY, EDINET_API_KEY, LLM_*, ALERTS_FEISHU_WEBHOOK_URL) go in a repo-root .env — see Environment Variables.

Non-Claude-Code MCP client? The 160+ tools work in any MCP-aware client (Cursor, Cline, …). The skills are a Claude-Code convenience layer — optional, not required to drive the server.

git clone -b master https://github.com/FindDataTechnology/fd-daas-mcp.git ~/code/DAAS
cd ~/code/DAAS

# 1. venv (data libs are declared deps)
uv sync

# 2. database — creates daas.db (full schema + dep-free starter catalog).
#    DAAS_DATABASE_URL is OPTIONAL: unset, it defaults to ./daas.db (writable
#    cwd) or ~/.fd-daas-mcp/daas.db. Set it only to relocate.
fd-daas-mcp/.venv/bin/fd-daas-mcp init       # one-shot provision + seed
fd-daas-mcp/.venv/bin/fd-daas-mcp doctor      # read-only health check

# 3. .env — add the source keys you need (see Environment Variables)

# 4. launch / health-check the consolidated server
fd-daas-mcp/bin/fd-daas-mcp-server                       # stdio server (what .mcp.json launches)
fd-daas-mcp/.venv/bin/python -m daas.fd_daas_mcp.selfcheck   # registry + tool health (target: failed=0)

If you skipped install.sh, the fd-open-data-mcp upstream still needs to be cloned (it's a path-dependency of fd-daas-mcp). The curl script does this for you; see install.sh for the exact sibling layout under ~/finddata.

Upstream: The fd-open-data-mcp data-fetcher is a sibling repo at ~/finddata/fd-open-data-mcp (cloned automatically by install.sh).

Docs site: The full, role-based documentation lives at docs-site/ (MkDocs Material, EN+ZH bilingual). Read it locally with uv run mkdocs serve (browses at /DAAS/), or build strictly with uv run mkdocs build --strict. See docs-site/README.md for build/serve/deploy.

Related MCP server: coin-mcp

Architecture

Strict downward dependency — a layer never reaches up.

L3  user MCP compositions  (composite manifests, served in-proc on fd-daas-mcp)
L2  workflow manifests      (daas.db `workflows` table + engine, run via workflow_run)
L1  fd-daas-mcp            (consolidated infra: daas/cron/alerts/dashboard/composite/research/pdf/gateway/workflow)
L0  fd-open-data-mcp       (sole data-fetch upstream; concept-based semantic fetcher + entity master)

• L0 — fd-open-data-mcp (sibling repo): the sole data-fetch surface. A concept-based semantic fetcher with ranking/failover/caching; holds the entity master (entities, entity_datasource_links). Served HTTP at :8300 (stdio fallback). Replaces the 11 former per-source data-fetch MCPs.

• L1 — fd-daas-mcp (this repo): the consolidated stdio server, sole entry in repo-root .mcp.json. Exposes 160+ tools across 9 groups (runtime count is authoritative — selfcheck) (daas · cron · alerts · dashboard · composite · research · pdf · gateway · workflow) behind one server and one fd-daas-mcp Click CLI. The thin consolidation layer is fd-daas-mcp/daas/fd_daas_mcp/ (server.py/registry.py/cli.py/selfcheck.py); each group's tool code lives in-package at fd-daas-mcp/<group>-mcp/.

• L2 — workflow manifests: manifests live in the workflows table in daas.db (registered via workflow_register, run via workflow_run). build_workflow_from_goal decomposes a natural-language goal into a manifest via an LLM.

• L3 — user MCP composition: a composite manifest ({name, upstreams, tools, workflows, prompt}) curates a named MCP surface served in-proc on the consolidated server. CRUD via composite_*_manifest.

The fetch skills (fd-daas-based-data-fetch, fd-daas-fetch-data, fd-daas-research) are thin shells: parameter-gathering → workflow_run(name, params) → checkpoint handling. They no longer call Python data libraries directly — fetch goes down through L1→L0.

For the full architecture, conventions, and the daas.db schema reference, see CLAUDE.md and construction/mcp.md.

Project Structure

daas/
├── .claude/skills/          # Claude Code skills (fd-daas-based-data-fetch is the core fetch shell)
├── fd-daas-mcp/             # Consolidated MCP server — sole .mcp.json entry (160+ tools, 9 groups)
│   ├── alerts-mcp/          #   alert rule engine + 7 notification channels
│   ├── composite-mcp/       #   user MCP composition (curate tools + embed workflows + prompt)
│   ├── cron-mcp/            #   task + schedule registry (DB-backed)
│   ├── daas-mcp/            #   datasource/function/indicator/entity catalog + compute + rules
│   ├── dashboard-mcp/       #   standalone-HTML dashboard registry + query
│   ├── gateway-mcp/         #   L0 upstream registry + call routing (former leader gateway half)
│   ├── workflow-mcp/        #   manifest-based multi-step data workflows (former leader workflow half)
│   ├── pdf-mcp/             #   local PDF/text semantic search (sqlite-vec) [optional]
│   ├── research-mcp/        #   persisted research bundle (collections + indicators + dashboard + report)
│   ├── bin/fd-daas-mcp-server      # launcher
│   └── daas/fd_daas_mcp/   # server.py / registry.py / cli.py / selfcheck.py
├── daas.db                  # Shared SQLite database (ships as a demo dataset: registry + observations + scraw_*)
├── dashboards/              # Standalone HTML dashboards (+ index.html, daas.md)
├── construction/            # Architecture docs (mcp.md — layered L0/L1/L2/L3)
└── .env                     # DAAS_DATABASE_URL, proxy, source auth keys, LLM config, ...

daas.db Data Model

One SQLite file at the path in DAAS_DATABASE_URL (relative sqlite:/// paths resolve against repo root; PRAGMA foreign_keys=ON for FK cascade, PRAGMA journal_mode=WAL + busy_timeout=10000 to dodge "database is locked"). Tables group by role:

Query it directly from the repo root: sqlite3 daas.db "SELECT …".

Skills (.claude/skills/)

Skills are plain Markdown (SKILL.md) + Python scripts — thin playbooks the agent invokes automatically when a task matches. The fetch skills gather parameters and call workflow_run; they no longer call Python data libraries directly (fetch goes L1→L0). 13 product skills ship with the repo (8 data-consumption + 5 creation; .claude/skills/ holds 32 directories in total — the other 19 are the 5 openspec-* workflow skills and 14 local-dev helpers, which are repo tooling rather than product surface):

MCP Tool Groups (fd-daas-mcp)

The consolidated server exposes 160+ tools across 9 groups — runtime count is authoritative via selfcheck (latest verified run: 161 tools, failed=0, skipped_optional=1 for the optional pdf group; the per-group counts below reflect that run). Catalog is group-level (per-tool detail via the server's own introspection / selfcheck).

The legacy leader group is dissolved: its gateway-routing half became gateway_*, its workflow-manifest half became workflow_*. Harness-registry / snapshot / provenance capabilities are deleted.

Launch: fd-daas-mcp/bin/fd-daas-mcp-server (stdio). Both the server and the fd-daas-mcp CLI consume registry.build(), so the two surfaces cannot drift.

Environment Variables

A single repo-root .env holds all config; scripts and the MCP server auto-load it. (Keys marked optional are only needed for the features they enable.)

For AI Agents

If you are an AI agent (e.g. Claude Code) operating in this repo:

• Fetch data through the workflow path. Use fd-daas-based-data-fetch: resolve the entity + indicator against daas.db via sqlite3, then workflow_run(name, params) — the manifest routes the fetch down through gateway_call → fd-open-data-mcp (L0) and persists into scraw_<slug> / observations. For multi-step fetches, build_workflow_from_goal emits a manifest.

• Workflow: resolve → fetch (via L0) → persist. Resolve entity+indicator in daas.db; fetch via the gateway; persist into scraw_<slug> (raw) or observations (computed indicator).

• Use the MCP server for everything else — catalog browsing, creating indicators/collections/rules, cron scheduling, alerts, building/finding dashboards, PDF semantic search, composite authoring, research bundles. These are the fd-daas-mcp tools (160+ across 9 groups; runtime count via selfcheck).

• Query daas.db with sqlite3 from the repo root (sqlite3 daas.db "…"). Use PRAGMA foreign_keys=ON for FK cascade.

• Authoritative architecture + schema reference: CLAUDE.md (it has a ## daas.db section listing every table) and construction/mcp.md (the layered L0/L1/L2/L3 reference).

License

Apache 2.0.