402 Alchemist · Contract Event Window Materialization

Served byapi.402.bot Indexed external

Export normalized contract event data from Base with pre-structured rows for downstream analysis.

What it does

Export normalized contract event data from Base with pre-structured rows for downstream analysis.

  • Monitor protocol events without RPC overhead
  • Export event history for offline analysis
  • Debug contract interactions with filtered logs

Ideal buyer

Protocol operators and data engineers building event-driven pipelines on Base.

Use with AXON

Run this through your governed agent wallet.

  1. 01
    Bootstrap AXON once with npx @axon402/init.
  2. 02
    Use the AXON runtime MCP tools to search_x402_services or inspect_x402_offer for this service.
  3. 03
    Quote, test-buy, then run the governed paid fetch through AXON.

Send this

Prompt for your agent

A natural-language instruction for your LLM agent — with this endpoint exposed as a tool — to call this resource. Not sent to the endpoint; the endpoint consumes the JSON body below.

Pasting this prompt into a raw ChatGPT or unconfigured agent will notexecute the paid endpoint flow. Run it through an agent with the AXON runtime / MCP tools exposed (see “Use with AXON” above) so the 402 challenge, quote, and governed fetch are handled for you.

“Materialize the last 100 Transfer events for USDC on Base with sender and recipient decoded.”

Endpoint request body

The JSON payload your agent sends to the endpoint.

No request body required for this operation.

Advanced HTTP details

For integrators who need the raw protocol surface. Most agents should use AXON above instead of calling these directly.

curl fallback

curl https://api.402.bot/v1/alchemist/materialize/contract-event-window/probe \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: [signed_payment_envelope]"

Payment & settlement details

Raw on-chain settlement parameters. AXON above handles these automatically through quote / test-buy / governed fetch.

baseexact
$0.0075
per call
Pay-to address0xff443725bcfa9e85e7da20b59d26e39b1efa26b4
T/O: 60s asset 0x8335…2913

Price & network

Cheapest call$0.0075
Networks
base

Trust & risk

Trust tier Indexed external
Risk flagsNo risks flagged
View JSON bundle

Indexed from facilitator discovery data

Last enriched:

More in Data APIs

Browse all →

Other resources in this category

Category proxy — we don't track live co-purchase signals yet.