{"uid":"cap_JWC3PGO6YdoTJFnyywwpq","slug":"strale-tool-call-validator-c75360c4","name":"Strale Tool Call Validator","description":"The trust layer for AI agents — 250+ independently tested data capabilities across 27 countries. Execute capabilities via REST, MCP, A2A, or x402 micropayments. Every call returns an audit record with cryptographic chain hashing.","url":"https://api.strale.io/x402/v2/tool-call-validate","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"tool_input":{"type":"string"},"expected_schema":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.054","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.054/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.054","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.054","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_D_UMoVbq4NP1qa-YiB75c","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.054","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates AI agent tool call inputs against an expected schema, returning a cryptographically audited pass/fail result","exampleAgentPrompt":"Before executing this tool call, validate it against the expected schema — the tool input is '{\"city\": \"Berlin\", \"date\": \"2025-06-01\"}' and the expected schema is '{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"},\"date\":{\"type\":\"string\",\"format\":\"date\"}}}'  — and give me the audit record with the cryptographic hash.","exampleUseCases":[{"title":"Pre-execution agent tool guard","prompt":"Before my AI agent fires this tool call, validate the input '{\"invoice_id\": \"INV-2045\", \"amount\": 299.99}' against the schema '{\"type\":\"object\",\"properties\":{\"invoice_id\":{\"type\":\"string\"},\"amount\":{\"type\":\"number\"}}}' and tell me if it passes, plus give me the audit hash."},{"title":"Compliance audit trail for agent actions","prompt":"I need a cryptographic audit record for every tool call my agent makes — can you validate this tool input '{\"user_id\": \"u_8812\", \"action\": \"delete_record\"}' against its expected schema and return the chain hash so I can log it for compliance?"},{"title":"Schema conformance check for LLM outputs","prompt":"My LLM just generated this function call payload: '{\"query\": \"top 10 customers\", \"limit\": 10}' — check it against the expected schema '{\"type\":\"object\",\"properties\":{\"query\":{\"type\":\"string\"},\"limit\":{\"type\":\"integer\"}}}' and tell me if it's valid before I send it downstream."}],"resultDescription":"Returns a pass/fail validation result indicating whether the tool_input conforms to the expected_schema, along with a cryptographic audit record including a chain hash for tamper-evident logging of the validation event.","failureModes":["Malformed JSON in tool_input causes parse error and validation failure","Invalid or unparseable expected_schema returns schema-error response","Missing required parameters (tool_input or expected_schema) returns 400 bad request","Network timeout on slow connections returns 5xx error","Input payload exceeds size limits returns payload-too-large error"],"whenToPreferThis":"Choose this endpoint when you need to validate AI agent tool call inputs against a defined schema with a cryptographically auditable record. It is especially valuable in agentic pipelines where compliance, auditability, and trust verification are required — for example, before executing high-stakes or irreversible tool calls. Prefer it over generic JSON schema validators when you need the cryptographic chain hash audit trail that Strale provides, or when operating within a multi-agent system that requires tamper-evident logging of every capability invocation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T07:07:04.113Z","isFirstParty":false}