SecondLook
SecondLook provides an independent pre-action review of a proposed AI or agent action. It checks supplied facts, authority, constraints, reasoning, risks, and missing information before execution. Use it when an action is costly, external, irreversible, or constraint-sensitive. SecondLook does not authorize, execute, or supply missing authority, and results are not guarantees of correctness.
InferenceLiveeip155:8453Exactvia cdp
AiAgentReviewPre-actionDecision-support
Calls · 30d
3↑ 11%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 22 snapshots so far.
$0.11
Verified settled volume
7 settlements proven x402 by their on-chain EIP-3009 marker.
$0.050
Listed price
As published in the catalog. Always read the live 402 before paying.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
3
Unique payers · 30d
Last called 2026-09-13 18:48Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xc077a55e71a43ad002fbac7bf91d48e9866e5727The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"code": "payment_required",
"error": "payment_required",
"message": "A valid x402 payment is required before inference can begin.",
"category": "payment",
"retryable": false,
"request_id": "cb214057-6a33-4abe-b6d7-db37c3ae2b02"
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.05USDC≈ $0.05 USD
on Base · exact scheme
Pay 0.05 USDC on Base to 0xc077…e5727. The signed payment is good for 1 minute.
- Paid to
- 0xc077…e5727
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 50000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"paymentFlow": "upfront",
"assetTransferMethod": "eip3009"
},
"payTo": "0xc077a55e71a43ad002fbac7bf91d48e9866e5727",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"goal": "Review a proposed customer refund before execution.",
"authority": {
"basis": "Support policy permits refunds up to $50.",
"status": "confirmed"
},
"known_facts": [
"The customer was charged twice."
],
"proposed_action": "Issue a $25 refund to the customer.",
"hard_constraints": [
"Do not exceed the documented $50 refund limit."
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"model": "implementation-managed",
"reason": "The supplied authority, facts, and constraint support the proposed refund.",
"key_risks": [],
"created_at": "2026-08-29T00:00:00.000Z",
"decision_id": "00000000-0000-4000-8000-000000000000",
"review_status": "no_material_concern_found",
"policy_version": "2026-08-27.5",
"recommendation": "proceed",
"missing_information": []
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input",
"output"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"allOf": [
{
"not": {
"required": [
"constraint_context",
"hard_constraints"
],
"properties": {
"hard_constraints": {
"minItems": 1
}
}
}
},
{
"not": {
"required": [
"constraint_context",
"important_constraints"
],
"properties": {
"important_constraints": {
"minItems": 1
}
}
}
}
],
"required": [
"goal",
"proposed_action"
],
"properties": {
"goal": {
"type": "string",
"pattern": "\\S",
"maxLength": 4000,
"minLength": 1
},
"authority": {
"type": "object",
"required": [
"status"
],
"properties": {
"basis": {
"type": "string",
"pattern": "\\S",
"maxLength": 4000,
"minLength": 1
},
"limits": {
"type": "array",
"items": {
"type": "string",
"pattern": "\\S",
"maxLength": 4000,
"minLength": 1
},
"maxItems": 25
},
"status": {
"enum": [
"confirmed",
"unclear",
"unknown"
],
"type": "string"
}
},
"additionalProperties": false
},
"known_facts": {
"type": "array",
"items": {
"type": "string",
"pattern": "\\S",
"maxLength": 4000,
"minLength": 1
},
"maxItems": 25
},
"uncertainties": {
"type": "array",
"items": {
"type": "string",
"pattern": "\\S",
"maxLength": 4000,
"minLength": 1
},
"maxItems": 25
},
"unknown_facts": {
"type": "array",
"items": {
"type": "string",
"pattern": "\\S",
"maxLength": 4000,
"minLength": 1
},
"maxItems": 25
},
"proposed_action": {
"type": "string",
"pattern": "\\S",
"maxLength": 4000,
"minLength": 1
},
"hard_constraints": {
"type": "array",
"items": {
"type": "string",
"pattern": "\\S",
"maxLength": 4000,
"minLength": 1
},
"maxItems": 25
},
"soft_preferences": {
"type": "array",
"items": {
"type": "string",
"pattern": "\\S",
"maxLength": 4000,
"minLength": 1
},
"maxItems": 25
},
"reasoning_summary": {
"type": "string",
"pattern": "\\S",
"maxLength": 4000,
"minLength": 1
},
"constraint_context": {
"type": "object",
"required": [
"schema_version",
"constraints"
],
"properties": {
"constraints": {
"type": "array",
"items": {
"type": "object",
"allOf": [
{
"if": {
"required": [
"applicability"
],
"properties": {
"applicability": {
"const": "inapplicable"
}
}
},
"then": {
"properties": {
"action_relation": {
"const": "not_applicable"
}
}
}
},
{
"if": {
"required": [
"applicability"
],
"properties": {
"applicability": {
"enum": [
"applicable",
"unresolved"
]
}
}
},
"then": {
"properties": {
"action_relation": {
"enum": [
"satisfies",
"violates",
"unresolved"
]
}
}
}
}
],
"required": [
"id",
"text",
"applicability",
"action_relation"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-z][a-z0-9_-]{0,63}$"
},
"text": {
"type": "string",
"pattern": "\\S",
"maxLength": 1000,
"minLength": 1
},
"applicability": {
"enum": [
"applicable",
"inapplicable",
"unresolved"
]
},
"action_relation": {
"enum": [
"satisfies",
"violates",
"unresolved",
"not_applicable"
]
}
},
"additionalProperties": false
},
"maxItems": 25,
"minItems": 1,
"uniqueItems": true
},
"schema_version": {
"const": "constraint-context-v1"
},
"conflict_groups": {
"type": "array",
"items": {
"type": "object",
"required": [
"id",
"constraint_ids",
"control"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-z][a-z0-9_-]{0,63}$"
},
"control": {
"oneOf": [
{
"type": "object",
"required": [
"status",
"controlling_constraint_id"
],
"properties": {
"status": {
"const": "established"
},
"controlling_constraint_id": {
"type": "string",
"pattern": "^[a-z][a-z0-9_-]{0,63}$"
}
},
"additionalProperties": false
},
{
"type": "object",
"required": [
"status"
],
"properties": {
"status": {
"const": "unresolved"
}
},
"additionalProperties": false
}
]
},
"constraint_ids": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z][a-z0-9_-]{0,63}$"
},
"maxItems": 10,
"minItems": 2,
"uniqueItems": true
},
"independently_binding_constraint_ids": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z][a-z0-9_-]{0,63}$"
},
"maxItems": 10,
"uniqueItems": true
}
},
"additionalProperties": false
},
"maxItems": 12,
"uniqueItems": true
}
},
"additionalProperties": false
},
"important_constraints": {
"type": "array",
"items": {
"type": "string",
"pattern": "\\S",
"maxLength": 4000,
"minLength": 1
},
"maxItems": 25
},
"alternatives_considered": {
"type": "array",
"items": {
"type": "string",
"pattern": "\\S",
"maxLength": 4000,
"minLength": 1
},
"maxItems": 25
},
"estimated_cost_of_action": {
"type": "object",
"required": [
"amount",
"currency"
],
"properties": {
"amount": {
"type": "number",
"maximum": 1000000000000000,
"minimum": 0
},
"currency": {
"type": "string",
"pattern": "^[A-Z]{3}$"
}
},
"additionalProperties": false
}
},
"description": "Structural JSON Schema plus the expressible cross-field rules. The x-secondlook-semantic-validation extension lists additional deterministic runtime invariants required for acceptance.",
"additionalProperties": false,
"x-secondlook-semantic-validation": {
"failure": {
"error_codes": [
"invalid_secondlook_request",
"invalid_constraint_context"
],
"http_status": 400
},
"invariants": [
{
"id": "aggregate_request_text",
"rule": "Aggregate request text across all request fields must be at most 24,000 JavaScript string code units."
},
{
"id": "aggregate_constraint_text",
"rule": "Aggregate constraint_context constraint text must be at most 12,000 JavaScript string code units."
},
{
"id": "unique_constraint_ids",
"rule": "Each constraint id must be unique across constraint_context.constraints, even when the surrounding objects differ."
},
{
"id": "unique_conflict_group_ids",
"rule": "Each conflict-group id must be unique across constraint_context.conflict_groups, even when the surrounding objects differ."
},
{
"id": "conflict_group_references",
"rule": "Every conflict-group constraint id must reference an existing constraint whose applicability is not inapplicable."
},
{
"id": "single_conflict_group_membership",
"rule": "A constraint may appear in at most one conflict group."
},
{
"id": "established_controller",
"rule": "An established controlling_constraint_id must identify an applicable member of that conflict group."
},
{
"id": "independently_binding_members",
"rule": "independently_binding_constraint_ids must be unique members of the same group and must not include its established controller."
}
],
"runtime_is_authoritative": true,
"additional_runtime_validation_required": true
}
},
"type": {
"const": "http"
},
"method": {
"const": "POST"
},
"bodyType": {
"const": "json"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type",
"example"
],
"properties": {
"type": {
"const": "json"
},
"example": {
"type": "object",
"required": [
"decision_id",
"created_at",
"policy_version",
"model",
"review_status",
"recommendation",
"reason",
"key_risks",
"missing_information"
],
"properties": {
"model": {
"type": "string",
"description": "Deprecated compatibility field; the underlying inference implementation is not a stable product contract."
},
"reason": {
"type": "string"
},
"key_risks": {
"type": "array",
"items": {
"type": "string"
}
},
"created_at": {
"type": "string",
"format": "date-time"
},
"decision_id": {
"type": "string",
"format": "uuid"
},
"review_status": {
"enum": [
"no_material_concern_found",
"material_concern_found",
"insufficient_information",
"human_review_required"
],
"type": "string"
},
"policy_version": {
"type": "string"
},
"recommendation": {
"enum": [
"proceed",
"reconsider",
"need_more_information",
"escalate_to_human"
],
"type": "string"
},
"missing_information": {
"type": "array",
"items": {
"type": "string"
}
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}Provenance
- Seen in the source catalog
- 2026-09-13 18:48Z
- Last indexed by Roundhouse
- 2026-09-25 10:50Z
- Last enriched (probe, favicon, geo)
- 2026-09-12 11:45Z
- x402 version
- 2
- Max timeout
- 60s
- Liveness probe
- HTTP 404
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 22 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service SecondLook and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=SecondLook' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://secondlook.edgecasesystems.workers.dev/v1/paid/second-look, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.