For Agents

The stack is machine-readable. No auth required. Three endpoints: structured JSON, plain-text for LLM context, and an MCP server for direct tool access.

GET /data.json Full structured dataset

167 projects, 6 layers, status, URLs, descriptions, funding, npm and GitHub signal, M&A events, vertical integration map. Updated weekly.

Request

curl https://agentpaymentsstack.com/data.json

Response schema

Field	Type	Description
layers	array	Array of 6 layer objects, L5 to L0
layers[].id	string	L0–L5
layers[].name	string	Layer name
layers[].projects	array	Projects in this layer
project.id	string	Slug, used as URL path
project.name	string	Display name
project.status	string	live \| early \| announced \| acquired
project.description	string	One-sentence summary
project.url	string?	Primary URL
project.tags	string[]?	Category tags
project.chain	string?	Primary blockchain(s)
project.funding	string?	Total raised or valuation
project.npm	object?	package, weekly_downloads
project.github	object?	stars, forks, contributors, last_commit
project.volume	object?	value (number), note (string)
project.editorial	string?	Curator note

Example — filter for live projects in L3

curl -s https://agentpaymentsstack.com/data.json | \
  jq '.layers[] | select(.id == "L3") | .projects[] | select(.status == "live") | .name'

GET /data/x402-volume.json Live x402 on-chain volume

Real-time transaction volume for the x402ExactPermit2Proxy contract on Base mainnet. Decoded from on-chain calldata via Blockscout. Includes 30-day USDC/USDT volume, transaction count, and daily breakdown. Updated weekly.

Request

curl https://agentpaymentsstack.com/data/x402-volume.json

Response shape

{
  "meta": {
    "contract": "0x402085c248EeA27D92E8b30b2C58ed07f9E20001",
    "chain": "base",
    "fetched_at": "2026-03-27T...",
    "note": "x402ExactPermit2Proxy. Covers the reference proxy only — individual facilitators may use separate deployments."
  },
  "volume_30d": {
    "total_usd": 61.80,
    "tx_count": 47,
    "by_token": { "USDC": 61.76, "USDT": 0.04 }
  },
  "daily_volume": { "2026-03-27": 59.40, ... }
}

GET /llms.txt Plain-text for LLM context

A compact, human-and-machine-readable summary of the entire stack. Designed to fit in an LLM context window. Includes key stats, layer descriptions, all project names and one-line summaries, and usage notes.

Request

curl https://agentpaymentsstack.com/llms.txt

Usage — add to Claude context

# In Claude Code
mcp add --transport http https://agentpaymentsstack.com/api/mcp

# Or fetch directly into context
curl https://agentpaymentsstack.com/llms.txt | claude -p "Which L1 wallet has the highest npm downloads?"

POST /api/mcp MCP server (JSON-RPC 2.0)

A Model Context Protocol server exposing the stack as tools. Connect in Claude Code, Cursor, or any MCP-compatible client. Five tools available.

Connect in Claude Code

mcp add --transport http https://agentpaymentsstack.com/api/mcp

Available tools

stack_search_projects

Search projects by name or description. Returns matching projects with layer, status, and URL.

stack_filter_by_layer

Get all projects in a specific layer (L0–L5).

stack_filter_by_status

Filter by status: live, early, announced, or acquired.

stack_get_acquisitions

Return all M&A events with acquirer, target, and deal value.

stack_get_stats

Return top-level stats: total projects, by layer, by status, volume, USDC share.

Raw JSON-RPC example

curl -X POST https://agentpaymentsstack.com/api/mcp \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "tools/call",
    "params": {
      "name": "stack_search_projects",
      "arguments": { "query": "x402" }
    },
    "id": 1
  }'

Rate limits & caching

No auth required. No rate limits currently enforced. data.json is served from Vercel Edge with a 1-hour CDN TTL. Updated weekly or when new projects ship. If you're building something that polls frequently, cache it on your end.

License

Data is available under CC BY 4.0. Attribution: agentpaymentsstack.com / @jordanlyall.

agentpaymentsstack.com · @jordanlyall

data.json · llms.txt