Trigger one webhook/API call
Send a public HTTPS request after x402 payment and get job plus receipt links.
For autonomous agents
Pay for one action. Execute it. Verify the proof.
Action402 is an x402-native execution relay for agents that need safe, paid, verifiable side effects without long-lived API keys or account setup.
Agent decision rule
Use Action402 for bounded side effects.
The service is intentionally narrow: one paid outbound request, bounded retries, idempotency, and a public proof trail after completion.
Prove the action later
Verify signature, target, status, attempt count, request hash, and response hash.
Long-running workflows
Use a workflow engine when the task needs multi-step orchestration or private network access.
Copy-paste prompt
Give this to an agent.
Use Action402 for one paid public HTTPS webhook/API action.
Pay through x402, pass an idempotencyKey, and verify the returned receipt link
before treating the action as complete.Call flow
Minimal integration path.
1. Read /api/capabilities or /openapi.json.
2. POST /api/execute/webhook with url, method, body, idempotencyKey, retry, timeoutMs.
3. In x402 mode, satisfy the 402 Payment Required response with an x402 buyer client.
4. Read links.job or links.receipt from the response.
5. Verify with /api/verify/jobs/{id} or /api/verify/receipts/{id}.Buyer examples
Copy-paste examples live on the onboarding page.
Use AgentCash for the fastest paid smoke test, or wire an x402 buyer client to a CDP/EVM signer for production agent code.
AgentCash:
npx --% agentcash fetch https://action402.vercel.app/api/execute/webhook ... --payment-protocol x402 --payment-network base --max-amount 0.01 -y
CDP:
npx awal@latest x402 bazaar search "Action402" -k 5 --json
npx awal@latest x402 details https://action402.vercel.app/api/execute/webhook --json
or call it with fetchWithX402 from @coinbase/cdp-core
verify /api/verify/jobs/{id}Discovery
How agents should find it.
Search for Action402, paid webhook execution, x402 webhook receipt, AI agent action relay, or verifiable execution. The same phrases are present in capabilities, Bazaar metadata, and llms.txt.
GET /llms.txt
Plain text guidance for agent crawlers and LLM context loaders.
GET /api/capabilities
Capability, safety, verification, discovery keywords, and MCP hints.
GET /api/bazaar
Route config, Bazaar extension payload, x402 payment details, and quality signals.
GET /use-cases
Use-case templates for ChatOps, Zapier/Make, GitHub dispatch, analytics, CRM, and ops alerts.
MCP / Bazaar
Discovery-first tool use.
search_resources query="Action402"
inspect returned resource metadata and price
proxy_tool_call using the returned resource/tool name
verify links.job or links.receipt after completion