x402 Bazaar

coinbase.com · Agent-Commerce Infrastructure modeIntegrated

Last probed 2026-08-10 00:39 UTC · Verified (Partial)

x402 Bazaar — Coinbase-run discovery/marketplace layer listing x402-payable agent services.

81 / 100Interrupt Score(range 50–100 · 8 properties unassessed)How much automated use this service interrupts — the badge-driving metric. Unassessed properties are provisionally scored at 50%; evidence-graded successes at 25%.

Custody / RiskUnknown

ConfidenceVerified (Partial)

Verdict: An agent can discover, activate, and operate on its own. Manage isn't assessed yet.

DiscoverEasy
ActivateEasy
OperateEasy
ManageNot assessed

Capability parity

Each stage answers one question about what an agent can do unattended. Stages are ordered by the credential-gateway dependency: Activate issues the keys that unlock Operate and Manage.

Discover

Can an agent find and read it, no account?

Easy

Be found by a retrieval agentEasy
Retrieval access present.
Evidence
Path tried
robots.txt / sitemap / discovery headers
Where it stalled
completed
Evidence tier
Tier 2 (live attempt)
Verification
Evidence-only — graded from passive signal, not live-verified.
Backing checks
retrieval_bot_access, sitemap_xml, link_header_discovery
Read what it does and how to use itEasy
Machine-readable docs present.
Evidence
Path tried
llms.txt / AGENTS.md / schema.org / docs
Where it stalled
completed
Evidence tier
Tier 1 (unauth probe)
Verification
Evidence-only — graded from passive signal, not live-verified.
Backing checks
llms_txt, llms_full_txt, agents_md, agent_card, markdown_content, schema_org_jsonld, content_signals
Read pricing & limits without loginNot assessed

Activate

Can an agent sign up and walk away with the keys it needs?

Easy

Create an account self-serveEasy
Signup inspected — no blocker found.
Evidence
Path tried
signup flow
Where it stalled
completed
Evidence tier
Tier 1 (unauth probe)
Verification
Evidence-only — graded from passive signal, not live-verified.
Obtain an API / MCP access credentialNot assessed
Obtain a management / admin keyNot assessed
Accept the terms without a bot-banEasy
No bot-prohibition signal found.
Evidence
Path tried
ToS / policy scan
Where it stalled
completed
Evidence tier
Tier 0 (passive scan)
Verification
Evidence-only — graded from passive signal, not live-verified.

Operate

Can an agent do the service's actual jobs — call, transact, pay?

Easy

Call the primary service over MCP / APIEasy
Verified by a live call.
Evidence
Path tried
API / MCP / browser
Where it stalled
completed
Evidence tier
Tier 2 (live attempt)
Verification
Verified — a live attempt completed.
Backing checks
mcp_server
Complete a transaction / checkoutNot applicable
Integrated tool — the API call is the transaction, no separate checkout.
Pay via an agent rail (x402 / ACP / AP2)Not assessed

Manage

Can an agent administer the account and provision resources?

Not assessed

Provision / scale / tear down a serviceNot assessed
Change account details / set budget / rotate keysNot assessed
View usage & billingNot assessed
Cancel / export / delete (offboard)Not assessed

Findings

How scoring works →

Interrupt tier: Low-Interrupt — no interrupts found; interrupt score 81 / 100 — the badge-driving metric. (range 50–100 · 8 unassessed)

Every tool starts at 100. Each interrupt found subtracts a penalty of base weight × timing × hardness × evidence — the multiplier values below come from the same rubric tables the score is computed with. New snapshots also provisionally subtract 50% of the full worst-case tax for each unassessed property and 25% for evidence-graded successes not live-verified by Tier 2.

Property coverage

A check only counts as clean when a probe tier capable of detecting that interrupt actually ran and found nothing. Not tested ≠ clean.

Property	Stage	State	Evidence	Required
SSO-only signup, no API-key issuance	activate	partial	Some coverage exists, but the available evidence is incomplete. Tier 1 assesses this property.	no
Mandatory phone verification call	activate	unassessed	Tier 2 (live attempt) ran but did not gather enough evidence to claim clean. Tier 2 assesses this property.	no
Mailed physical code (postal)	activate	unassessed	Tier 2 (live attempt) ran but did not gather enough evidence to claim clean. Tier 2 assesses this property.	no
“Contact sales” wall (no self-serve path)	activate	unassessed	Tier 2 (live attempt) ran but did not gather enough evidence to claim clean. Tier 2 assesses this property.	no
Manual approval queue	activate	unassessed	Tier 2 (live attempt) ran but did not gather enough evidence to claim clean. Tier 2 assesses this property.	no
Rate-limit-triggered manual review	manage	unassessed	Tier 2 (live attempt) ran but did not gather enough evidence to claim clean. Tier 2 assesses this property.	no
One-time account / payment-method provisioning	manage	unassessed	Tier 2 (live attempt) ran but did not gather enough evidence to claim clean. Tier 2 assesses this property.	no
Identity / KYC verification	activate	unassessed	Tier 2 (live attempt) ran but did not gather enough evidence to claim clean. Tier 2 assesses this property.	no
Crypto wallet / key-custody setup	operate	unassessed	Tier 2 (live attempt) ran but did not gather enough evidence to claim clean. Tier 2 assesses this property.	no
CAPTCHA / bot-challenge	activate	success	None found — checked at Tier 0 (passive scan) + Tier 1 (unauth probe) + Tier 2 (live attempt) (evidence-graded; not yet live-verified by a Tier 2 probe) Tier 0 assesses this property.	no
Email OTP verification	activate	success	None found — checked at Tier 1 (unauth probe) + Tier 2 (live attempt) (evidence-graded; not yet live-verified by a Tier 2 probe) Tier 1 assesses this property.	no
SMS / phone OTP verification	activate	success	None found — checked at Tier 1 (unauth probe) + Tier 2 (live attempt) (evidence-graded; not yet live-verified by a Tier 2 probe) Tier 1 assesses this property.	no
ToS clause banning automated/bot access	discover	success	None found — checked at Tier 0 (passive scan) (evidence-graded; not yet live-verified by a Tier 2 probe) Tier 0 assesses this property.	no
Mandatory redirect to vendor’s own site	operate	success	None found — checked at Tier 1 (unauth probe) + Tier 2 (live attempt) (evidence-graded; not yet live-verified by a Tier 2 probe) Tier 1 assesses this property.	no
No Machine Interface	operate	success	None found — checked at Tier 1 (unauth probe) (evidence-graded; not yet live-verified by a Tier 2 probe) Tier 1 assesses this property.	yes

No interrupts found — no evidence penalties. Unassessed properties still contribute a provisional tax.

How we scored this

Confidence: Verified (Partial) (0.75) — A live Tier-2 session ran but stopped early at a detected hard blocker — verified up to that point, unknown beyond it.
Machine-Readability sub-score: 64 / 100 (a separate integration-ease signal — it never enters the Interrupt Score or badge).
Some capability stages are not yet assessed — shown plainly in the spine above, never as a pass.
Rubric, tiers, confidence model, and badge thresholds →

Machine-readability checks 64 / 100

Four check groups, equal weight: machine interfaces, browsing efficiency, element discoverability, and discovery/agent access. Each check carries an evidence grade (proven / plausible / emerging) — an honesty label that never weights the score. What these mean →

llms.txtemergingFound — docs.cdp.coinbase.com/llms.txt (7.5 KB, 50 links)
llms-full.txtemergingFound — docs.cdp.coinbase.com/llms-full.txt (1024.0 KB, 1211 links)
AGENTS.mdemergingFound — docs.cdp.coinbase.com/AGENTS.md
A2A agent cardemergingFound — docs.cdp.coinbase.com/.well-known/agent-card.json
MCP server (well-known or official registry)plausibleFound — docs.cdp.coinbase.com/.well-known/mcp.json
OpenAPI/Swagger specplausibleNot provided
Rate-limit headersplausibleNot provided
Structured JSON error responsesplausibleNot provided
OAuth authorization-server metadata (RFC 8414)provenNot provided
API catalog (RFC 9727) (emerging)emergingNot provided
Agent-payment discovery (x402 / UCP) (emerging)emergingNot provided
Lean HTML transfer sizeplausibleNot provided
Manageable DOM sizeplausible1391 DOM nodes (threshold 1500)
High content-to-markup densityplausibleNot provided
Content readable without JS executionprovenraw HTML holds 99% of rendered text (5733 vs 5775 chars; threshold 40%)
Clean-content alternate (RSS/Atom/feed/markdown)plausibletext/markdown
Serves markdown on Accept: text/markdownplausiblereturned text/markdown; charset=utf-8
Interactive elements are semanticplausible150/150 semantic (100%); 0 div/span click targets
Form fields have accessible namesplausibleNot provided
Inputs carry autocomplete hintsplausibleNot checked — no autocomplete-eligible inputs
WebMCP tools (modelContext API)emergingNot provided
AI retrieval/search fetchers allowed (robots.txt)provenno retrieval-fetcher blocks in robots.txt
Sitemap (indexability)plausibleFound — docs.cdp.coinbase.com/sitemap.xml
schema.org JSON-LD in raw HTMLplausible1 valid JSON-LD block(s) in raw (pre-JS) HTML
Content-Signal directives (robots.txt)emergingai-train=yes, search=yes, ai-input=yes
Web Bot Auth key directory (emerging)emergingNot provided
Discovery Link headers on homepage (emerging)emergingrel=api-catalog
robots.txt AI-crawler accessplausibleno AI-crawler blocks in robots.txt
Unauthenticated API error is structured JSONplausibleNot provided
Unauthenticated API returns auth guidance (401/403 or documented)plausibleNot provided
API exposes rate-limit headersplausibleNot provided
API key obtainable without human interactionplausibleNot checked — no OpenAPI spec found; self-serve API-key path indeterminate from Tier 1

Evidence & history

Last probed 2026-08-10 00:39 UTC. The raw JSON is the archival record.

Date	Score	Badge	Rubric version
2026-08-10 00:39 UTC	81	Low-Interrupt (current)	[email protected]
2026-08-10 00:23 UTC	81	Low-Interrupt	[email protected]
2026-08-09 23:47 UTC	66	Moderate-Interrupt	[email protected]
2026-08-09 23:47 UTC	81	Low-Interrupt	[email protected]
2026-08-09 23:46 UTC	81	Low-Interrupt	[email protected]
2026-08-09 17:13 UTC	81	Low-Interrupt	[email protected]
2026-08-09 05:23 UTC	88	Low-Interrupt	[email protected]
2026-08-09 05:23 UTC	88	Low-Interrupt	[email protected]
2026-08-09 05:15 UTC	88	Low-Interrupt	[email protected]
2026-08-09 05:15 UTC	88	Low-Interrupt	[email protected]
2026-08-09 05:13 UTC	88	Low-Interrupt	[email protected]
2026-08-09 05:12 UTC	88	Low-Interrupt	[email protected]
2026-08-09 03:14 UTC	88	Low-Interrupt	[email protected]
2026-08-09 01:47 UTC	88	Low-Interrupt	[email protected]
2026-08-09 01:45 UTC	88	Low-Interrupt	[email protected]
2026-07-10 07:16 UTC	100	Low-Interrupt	[email protected]

Alternatives in Agent-Commerce Infrastructure

Other Agent-Commerce Infrastructure tools in the same mode (integrated), ranked by Overall LLM-Friendliness (the mean of Interrupt Score and Machine-Readability) — comparable to this listing because they share its usage mode.

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