Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Multi-venue VWAP, bid/ask, crypto FX, metals and equities with provenance receipts for AI agents
These three are never merged into one score: opinions, measurements and popularity are different things.
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
Pick the AI app you use, then copy the settings.
You need
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Pick your app above. We remember it, so next time the button says “Install in …”.
Works in Claude on the web, desktop and mobile:
https://mcp.blocksize.info/mcp/server/?utm_source=mcp-registryRun this in your terminal
claude mcp add --transport http agentic-payments 'https://mcp.blocksize.info/mcp/server/?utm_source=mcp-registry'Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"agentic-payments": {
"url": "https://mcp.blocksize.info/mcp/server/?utm_source=mcp-registry"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Paste into .vscode/mcp.json in your project
{
"servers": {
"agentic-payments": {
"type": "http",
"url": "https://mcp.blocksize.info/mcp/server/?utm_source=mcp-registry"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
https://mcp.blocksize.info/mcp/server/?utm_source=mcp-registryMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
We have not read this server’s tool list yet; we check endpoints in rotation.
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026
The publisher (mcp.blocksize.info) is not the repo owner (jf-cmyk); someone else may have listed it
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Not checked yet; we check endpoints in rotation
Not checked yet; we check endpoints in rotation
Not checked yet; we read the tool list when we check the endpoint
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 0 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
The registry does not list a required key, though some servers ask you to sign in on first use.
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
The GitHub repo last changed –, and the latest version (0.6.24) reached the registry 30 days ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
In the same category: Spec Driven Development, Remote Desktop Commander, dotnet-mcp
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
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Institutional-grade market data for AI agents, with three integration surfaces:
https://blocksize.info/?utm_source=agentic-widget&utm_medium=aihttps://mcp.blocksize.info/https://mcp.blocksize.info/mcp/server/https://mcp.blocksize.info/anthropic/mcp/https://mcp.blocksize.info/claude-connectorhttps://mcp.blocksize.info/mcp/manifest.jsonhttps://mcp.blocksize.info/openapi.jsonhttps://mcp.blocksize.info/docshttps://mcp.blocksize.info/quickstart/remote-mcphttps://mcp.blocksize.info/quickstart/first-pricehttps://mcp.blocksize.info/prompt-exampleshttps://mcp.blocksize.info/privacyhttps://mcp.blocksize.info/supporthttps://mcp.blocksize.info/server.jsonhttps://mcp.blocksize.info/llms.txthttps://mcp.blocksize.info/sitemap.xmlhttps://mcp.blocksize.info/robots.txthttps://mcp.blocksize.info/data-packages.jsonhttps://mcp.blocksize.info/category-hubs.jsonhttps://mcp.blocksize.info/rwa-market-datahttps://mcp.blocksize.info/market-data-licensinghttps://mcp.blocksize.info/signed-oracle-feedsBlocksize is optimized to be found for high-intent searches around real-time price data, market data APIs for AI agents, x402-paid data, and MCP market data discovery.
Canonical intent pages:
https://mcp.blocksize.info/rwa-market-datahttps://mcp.blocksize.info/market-data-licensinghttps://mcp.blocksize.info/signed-oracle-feedshttps://mcp.blocksize.info/market-data-api-for-ai-agentshttps://mcp.blocksize.info/real-time-price-data-apihttps://mcp.blocksize.info/crypto-vwap-apihttps://mcp.blocksize.info/bid-ask-price-apihttps://mcp.blocksize.info/fx-rates-apihttps://mcp.blocksize.info/metals-price-apihttps://mcp.blocksize.info/x402-market-data-apihttps://mcp.blocksize.info/mcp-market-data-serverhttps://mcp.blocksize.info/accountless-market-data-apihttps://mcp.blocksize.info/price-data-api-exampleshttps://mcp.blocksize.info/market-data-api-comparisonhttps://mcp.blocksize.info/crypto-market-data-api-alternativeshttps://mcp.blocksize.info/oracle-data-api-for-ai-agentsRecommended repository topics and listing keywords:
market-data, price-data, real-time-data, mcp, ai-agents, x402, crypto-vwap, bid-ask, fx-rates, metals-api, agentic-payments
Indexing checklist:
https://mcp.blocksize.info/sitemap.xml in Google Search Console and Bing Webmaster Tools.server.json, llms.txt, OpenAPI JSON, and data-packages.json as the canonical machine-readable citations in marketplaces, docs, and repo descriptions.category-hubs.json for dated coverage states, rights boundaries, methodology, and citation instructions. Cataloged, candidate, and production-promoted coverage are intentionally separate states.RWA claims boundary:
The remote MCP server is meant for directory listings and fast evaluation in ChatGPT Developer Mode, Cursor, Claude MCP clients, Smithery, Glama, and other Streamable HTTP clients.
It exposes only read-only discovery tools:
search_pairslist_instrumentsget_pricing_infoget_product_catalogrecommend_account_planget_workflow_endpointget_market_data_endpointsearchfetchThis public surface does not execute paid live market data calls directly.
The paid HTTP API is the production data path for live access:
GET /v1/vwap/{pair}GET /v1/bidask/{pair}GET /v1/fx/{pair}GET /v1/metal/{ticker}GET /v1/batchFree discovery endpoints:
GET /v1/coverageGET /v1/searchGET /v1/instruments/{service}GET /v1/samples/market-data?service=vwap&symbol=BTCUSD for a clearly synthetic value preview and attributed paid handoffGET /health/v1/search is paginated with limit and offset. Its total_matches field is the full match count for the searched catalogs; the default 50 is only the response page size and is unrelated to starter credits.
Payment modes:
PAYMENT-SIGNATURENew eligible authenticated users receive 30,000 free live data credits every calendar month (UTC), positioned as Start with 30,000 free live-data credits every month. The allowance is an evaluation and prototyping licence with required attribution; production commercial use requires a subscription. The number is configured once in FREE_TIER_MONTHLY_CREDITS (src/config.py) and every surface renders it from there. Raw caller-selected HTTP identity headers are disabled in production and cannot claim or spend credits. When the monthly allowance is exhausted, agents can use direct x402 payment, start a subscription trial at /go/free-trial (plans from EUR 49/month, see /go/pricing), or contact Blocksize sales about an Enterprise authenticated account plan.
Unit pricing is one list for both payment modes: 1 credit = $0.001 USDC, and every product costs the same number of credits in a connector as its x402 price (src/pricing_catalog.py):
| Product | Credits | USDC (x402) |
|---|---|---|
| Core crypto: VWAP, bid/ask, state price, 30m and 24h VWAP | 2 | $0.002 |
| Extended crypto: the same routes for long-tail pairs | 4 | $0.004 |
| FX and metals | 5 | $0.005 |
| Tokenized equities | 8 | $0.008 |
| Pre-trade sanity check | 100 | $0.10 |
| Market brief, price receipt, monitor evaluation | 250 | $0.25 |
| Token quality, state divergence | 500 | $0.50 |
| Macro snapshot, Solana token brief | 1,000 | $1.00 |
| Trader alpha pack | 2,500 | $2.50 |
The Anthropic-safe MCP surface is mounted at /anthropic/mcp/ and exposes read-only tools only (the Cursor and OpenAI connectors expose the same set):
search_pairslist_instrumentsget_credit_balanceget_vwapget_bid_askget_state_priceget_vwap_30mget_vwap_24hget_fx_rateget_metal_priceget_market_briefrun_pre_trade_checkcreate_price_receiptget_macro_snapshotget_token_qualityget_state_divergenceget_solana_token_briefget_trader_alpha_packLive market data tools use server-side free-tier credits keyed to authenticated user identity. The allowance is 30,000 credits per verified identity per calendar month (UTC), set by FREE_TIER_MONTHLY_CREDITS and shared by the Claude, Cursor, and OpenAI connectors. The legacy ANTHROPIC_DAILY_CREDITS, CURSOR_DAILY_CREDITS, and OPENAI_DAILY_CREDITS variables are ignored; per-user entitlement overrides for subscribers still apply.
For local beta testing, set ANTHROPIC_ENABLE_BETA_TOKENS=true and ANTHROPIC_BETA_TOKENS to a JSON object mapping random bearer tokens to user ids. For public Claude custom connectors, set ANTHROPIC_AUTH_PROVIDER=clerk, keep ANTHROPIC_ENABLE_BETA_TOKENS=false, and configure the Clerk env vars in .env.example. The Claude OAuth metadata endpoints are served at /.well-known/oauth-protected-resource/anthropic/mcp/ and /.well-known/oauth-authorization-server/anthropic/mcp.
For builders who want the full tool surface inside a local MCP client, this repo also contains the advanced local MCP server in src/mcp_server.py.
That mode is intended for direct builder integrations and requires local credentials.
Use GET /v1/coverage for current source-backed counts and qualification boundaries. The response separates enabled live discovery namespaces, decision-grade canonical RWA identities, and research/manual-verification coverage. Namespace and venue-row counts overlap and must not be summed as a unique-instrument total.
uv venv
source .venv/bin/activate uv pip install -e ".[dev]"
Run the HTTP server:
uvicorn src.resource_server:app --port 8402
Run the advanced local MCP server:
python -m src.mcp_server
.venv/bin/python -m pytest tests/ -q
MIT