Delx Commerce — Pay-per-result APIs for agents

https://commerce.delx.ai/api/v1/x402/abi-type-index

● healthy ai

Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.

Paid verification

No sponsored paid call yet.

Pay this endpoint once from your own wallet (Base USDC, up to $1.00) and we call it and record what came back. Your wallet pays the listed recipient directly; Agent Tools never holds funds. Sponsored checks prove delivery; they do not count as demand.

Quality grade

How grading works

A 75.2 / 100

Availability 20.0 / 20

Endpoint responded (HTTP 402)

Payability 15.0 / 15

✓ Answers a real HTTP 402 challenge
✓ Publishes a /.well-known/x402 descriptor
✓ Payment address on record
✓ Settlement network declared
✓ Price declared

Demand 22.7 / 35

125 distinct payers, 3314 USDC transfers in the last 30 days; the wallet is shared by 2 listings, so each is credited 1/2; discounted because most transfers come from few payers

Performance 3.4 / 10

Last probe answered in 1385 ms (full marks at 200 ms or less)

Readiness 14.1 / 15

Agent readiness 94/100

Owner verified 0.0 / 5

Nobody has claimed this listing yet

Endpoint last checked 20 h ago. On-chain activity last read 3 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass. This grade sets search order and leaderboards; the readiness score below is shown for reference only.

x402 readiness

A · 94/100

Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here A, 75.2/100), which weighs availability, payability and on-chain demand. How the two differ

Valid payment requirements	10/10	Payment requirements carry a payee, a mainnet network and a price.
Live 402 challenge	25/25	Paid endpoint answers with an HTTP 402 challenge (1385 ms).
x402 version	10/10	Speaks x402 v2.
Signed descriptor	n/a	No x402 standard defines a signed descriptor.
Uptime (30 days)	15/15	32/32 probes succeeded over 30 days (100%).
Resource declaration	10/10	Declares 987 paid resource(s).
Verified identity	5/10	Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.
Freshness + modern flags	5/5	seen in a source within 7 days; declares x402.
Security declaration	n/a	Payment is the access control for an x402 resource.

Applicable criteria total 85 points, scaled to 100.

Responsiveness: Responsive (1385 ms; bands ≤2.5 s, ≤5 s, ≤8 s, slower; penalty only).

Payment evidence: x402_challenge — We sent a request and got a live HTTP 402 challenge. Also: x402_manifest, catalog_listing. Qualifies the payment claim; adds no points.

Measured 2026-11-11.

Nine criteria, the same as the A2A readiness score, read from our daily probe of the paid endpoint, its payment requirements and 30-day probe history. Signed descriptor and security declaration are n/a for x402 (payment is the access control), as is an x402 version we have not observed; the remaining points are scaled to 100. Grades: A>=90, B>=75, C>=60, D>=40, F<40. It also feeds 15 points of the x402 quality grade.

Compared with peers

Against 10,082 reachable x402 APIs in our daily snapshot (2026-11-12 06:46 UTC). Display only; it does not change search order.

Readiness: Higher than 95% of peers; This listing 94 · peer median 78
Latency: Faster than 5% of peers; This listing 1,385 ms · peer median 205 ms

Where it loses the most points, and how to win them back

Verified identity −5 — Claim the listing and prove control of its domain.
Now: Publisher descriptor (/.well-known/x402 or OpenAPI) on record; claim this listing to verify domain control.

How many agent tools actually work · All statistics

Paid endpoints

987 resource(s) advertised by this origin. Each price below is that resource's own x402 price; the headline price is the range across them.

https://commerce.delx.ai/api/v1/x402/abi-type-index $0.0030 / call

Index ABI type frequency for planning encodings without performing eth_call — call when indexing ABI type frequency before encoding. Use for chain input hygiene without live RPC—adjacent to OneSource-class small chain reads, but static/local only so rights and margin stay clear. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base. Execution is first-party, local-only, stateless, and memory-only with no paid upstream, no input retention, and no claim of live chain tip, w…

https://commerce.delx.ai/api/v1/x402/abs-n $0.0010 / call

Absolute value of a number. Call when you need magnitude from signed deltas or balances. Returns absolute numeric value for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.

https://commerce.delx.ai/api/v1/x402/accept-encoding-rank $0.0010 / call

Accept Encoding Rank: ranks supported content codings against Accept-Encoding weights using only bounded caller-supplied values. Call when you need a bounded accept encoding rank result before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for Accept Encoding Rank as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base or Solana. First-party, stateless, memor…

https://commerce.delx.ai/api/v1/x402/accept-header-rank $0.0010 / call

Accept Header Rank: ranks offered media types against weighted Accept ranges using only bounded caller-supplied values. Call when you need a bounded accept header rank result before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for Accept Header Rank as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base or Solana. First-party, stateless, memory-only execut…

https://commerce.delx.ai/api/v1/x402/accept-language-rank $0.0010 / call

Accept Language Rank: ranks offered languages against weighted Accept-Language ranges using only bounded caller-supplied values. Call when you need a bounded accept language rank result before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for Accept Language Rank as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base or Solana. First-party, stateless, memor…

https://commerce.delx.ai/api/v1/x402/address-checksum-evm $0.0030 / call

Produce or validate an EIP-55 checksummed EVM address without network calls — call when producing or checking EIP-55 checksum addresses. Use for chain input hygiene without live RPC—adjacent to OneSource-class small chain reads, but static/local only so rights and margin stay clear. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base. Execution is first-party, local-only, stateless, and memory-only with no paid upstream, no input retention, and no claim of live chain ti…

https://commerce.delx.ai/api/v1/x402/address-is-zero $0.0010 / call

Detect the zero EVM address used as empty/burn/default sentinel. Call when validating recipients or detecting unset address fields safely. Returns boolean is_zero plus normalized address as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

https://commerce.delx.ai/api/v1/x402/address-normalize $0.0010 / call

Lowercase-normalize EVM address shape without EIP-55 checksum work. Call when deduping addresses from mixed-case sources before storage or compare. Returns normalized lowercase address plus validity flag as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

https://commerce.delx.ai/api/v1/x402/age-header-validate $0.0010 / call

Age Header Validate: checks whether an HTTP Age value fits a declared freshness lifetime using only bounded caller-supplied values. Call when you need a bounded age header validate result before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for Age Header Validate as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base or Solana. First-party, stateless, memo…

https://commerce.delx.ai/api/v1/x402/age-years $0.0010 / call

Age in whole years. Use for eligibility checks and profile enrichment from a birthdate. Returns whole-year age from an ISO birthdate (not a legal ID check). $0.001 USDC per successful call via x402 on Base or Solana—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.

https://commerce.delx.ai/api/v1/x402/agent-delivery-acceptance-gate $0.0010 / call

Agent Delivery Acceptance Gate: combines required delivery checks into one fail-closed acceptance decision using only bounded caller-supplied values. Call when you need a bounded agent delivery acceptance gate result before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Acceptance Gate as versi…

https://commerce.delx.ai/api/v1/x402/agent-delivery-batch-gate $0.0010 / call

Agent Delivery Batch Gate: checks batch terminality, success fraction, and refund-queue coverage using only bounded caller-supplied values. Call when you need a bounded agent delivery batch gate result before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Batch Gate as versioned deterministic J…

https://commerce.delx.ai/api/v1/x402/agent-delivery-dedupe-key $0.0010 / call

Agent Delivery Dedupe Key: derives a stable non-secret key from operation and caller item identity using only bounded caller-supplied values. Call when you need a bounded agent delivery dedupe key result before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Dedupe Key as versioned deterministic…

https://commerce.delx.ai/api/v1/x402/agent-delivery-fallback-gate $0.0010 / call

Agent Delivery Fallback Gate: checks whether failure conditions permit a declared fallback using only bounded caller-supplied values. Call when you need a bounded agent delivery fallback gate result before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Fallback Gate as versioned deterministic J…

https://commerce.delx.ai/api/v1/x402/agent-delivery-order-check $0.0010 / call

Agent Delivery Order Check: checks delivered identifiers against expected order using only bounded caller-supplied values. Call when you need a bounded agent delivery order check result before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Order Check as versioned deterministic JSON. Price: $0.…

https://commerce.delx.ai/api/v1/x402/agent-delivery-partial-result-check $0.0010 / call

Agent Delivery Partial Result Check: checks partial-result coverage against a minimum fraction using only bounded caller-supplied values. Call when you need a bounded agent delivery partial result check result before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Partial Result Check as version…

https://commerce.delx.ai/api/v1/x402/agent-delivery-quality-score $0.0010 / call

Agent Delivery Quality Score: calculates a transparent weighted score from completeness, validity, freshness, and latency using only bounded caller-supplied values. Call when you need a bounded agent delivery quality score result before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Quality Sco…

https://commerce.delx.ai/api/v1/x402/agent-delivery-retry-plan $0.0010 / call

Agent Delivery Retry Plan: builds a bounded retry plan from attempts, base delay, and retryable status using only bounded caller-supplied values. Call when you need a bounded agent delivery retry plan result before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Retry Plan as versioned determini…

https://commerce.delx.ai/api/v1/x402/agent-delivery-sla-check $0.0010 / call

Agent Delivery Sla Check: checks latency, success, and result completeness against an SLA using only bounded caller-supplied values. Call when you need a bounded agent delivery sla check result before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Sla Check as versioned deterministic JSON. Pric…

https://commerce.delx.ai/api/v1/x402/agent-delivery-timeout-budget $0.0010 / call

Agent Delivery Timeout Budget: allocates an end-to-end timeout across connect, execution, and response phases using only bounded caller-supplied values. Call when you need a bounded agent delivery timeout budget result before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent Delivery Timeout Budget as vers…

How to call

cURL · x402-fetch / x402-axios will auto-handle 402

curl -sS -i -X GET https://commerce.delx.ai/api/v1/x402/abi-type-index  # expect HTTP 402 Payment Required (about $0.001/call)

/.well-known/x402.json

https://commerce.delx.ai/.well-known/x402

Listed in

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x402scan since 2026-09-27