# Agent Economy Index (index.agentexchange.work)

> Independent daily measurement of the machine-customer economy since 2026-09-29: x402 Bazaar size, sellers, calls, payers, prices, concentration and churn; MCP registry size and growth; MCP server integrity. CC BY 4.0.

- Latest snapshot JSON: https://index.agentexchange.work/v1/latest.json
- All series JSON: https://index.agentexchange.work/v1/series.json (one metric: ?key=bazaar.resources)
- One day: https://index.agentexchange.work/v1/snapshots/<YYYY-MM-DD>.json
- MCP (Streamable HTTP): POST https://index.agentexchange.work/mcp with tools index_latest, index_series
- MCP remote census (every remote registry server probed daily): https://index.agentexchange.work/v1/census.json, per server https://index.agentexchange.work/v1/mcp/<name>.json and https://index.agentexchange.work/mcp-server/<name>
- Operator claims (no account, no email): serve the registry name as the body of https://<your host>/.well-known/agentexchange-claim.txt, then POST https://index.agentexchange.work/v1/mcp/claim (form or JSON: name, optional webhook URL, optional contact); claimed servers get a JSON webhook alert when a daily probe records a tool change or more flagged descriptions than the day before (max one per 6 h), a CLAIMED prefix on the badge and a verified line on the server page; public list of claims (names, hosts, dates): https://index.agentexchange.work/v1/claims.json
- Change feeds (RSS): https://index.agentexchange.work/changes.xml and https://index.agentexchange.work/mcp-server/<name>/changes.xml
- Open CSV dumps (CC BY 4.0): https://index.agentexchange.work/v1/dump/servers.csv (latest daily census), https://index.agentexchange.work/v1/dump/flags.csv (flagged tool descriptions)
- Paid depth (x402, USDC on Base, no key): https://index.agentexchange.work/v1/pro/resources.json $0.10, /v1/pro/sellers.json $0.10, /v1/pro/new.json $0.05, /v1/pro/registry.json $0.05, /v1/pro/observations.json $0.05; manifest https://index.agentexchange.work/.well-known/x402
- Related: https://drift.agentexchange.work (MCP integrity report and study)