A one-shot observational probe of every advertised x402 endpoint
on ERC-8004 agents at 2026-10-11T21:21:54Z. One
unauthenticated request per endpoint; the inclusion rule is a
HTTP 402 answer with a parseable, non-empty accepts[]
block that carries a payTo and a parseable price.
No authentication, no payment, no retries, no state mutation.
Not an endorsement, score, or ranking — the agent answered a 402 challenge once; nothing more. This is the source of truth that backs the x402 agent payment interop field test write-up; the field-test blog is the narrative, this page is the citable dated artefact.
Headline table
| Metric | Base | Ethereum | Total |
|---|---|---|---|
| Endpoints returning valid 402 | 261 | 9 | 270 |
| Distinct agents with ≥1 valid-402 endpoint | 55 | 3 | 58 |
Snapshot values at 2026-10-11T21:21:54Z. For current /
live counts, see /ecosystem.
Downloads
| File | Format | Notes |
|---|---|---|
| dataset.csv | text/csv |
270 data rows + header. One row per advertised endpoint. |
| x402-payable-endpoints-2026-10-11.json | application/json |
Raw probe payload (schema v1). Carries sibling_agent_ids, omitted from the CSV. |
| dataset.jsonld | application/ld+json |
Schema.org Dataset JSON-LD mirror of the in-page block. |
| SHA256SUMS | text/plain |
BSD sha256sum output for the sibling files in this directory. |
| PROVENANCE.json | application/json |
Source, probe timestamp, raw JSON URL, licence. |
Reading
| Document | Purpose |
|---|---|
| METHOD.md | What was probed, how, inclusion rule, and what this is NOT (not a liveness guarantee, not a payment outcome, not a methodology change). |
| DATA-DICTIONARY.md | Field-by-field schema for the raw JSON and the derived CSV columns, with type, source, and null semantics. |
License and citation
Licensed CC BY 4.0 — reuse it, cite it. Cite as: Onchain Agent Intel (2026). x402 Payable Endpoints Probe — Base + Ethereum, 2026-10-11. https://onchainagentintel.io/data/x402-payable-endpoints-2026-10-11/.
Companion writing: x402 agent payment interop field test; guide: How to check an x402 endpoint works.