# Coding Agent Context APIs

Pay-per-call fresh external context for coding agents plus preserved preflight and read-only canary utilities.
OpenAPI: https://x402-canary.nicolas-x402-16f380a7.workers.dev/openapi.json
Catalog: https://x402-canary.nicolas-x402-16f380a7.workers.dev/catalog
Payment: x402 on Base; testnet uses Base Sepolia.
AgentCash search terms: npm docs; TypeScript API; package documentation; npm package signature; npm upgrade; breaking changes; migration diff; browser snapshot; rendered web page; JavaScript page; accessibility tree.
Primary context pricing: NPM Symbol Context $0.015; NPM API Diff $0.025; Browser Context $0.03. Dependency Gate remains $0.015 and Release Gate $0.04.
NPM Symbol Context: https://x402-canary.nicolas-x402-16f380a7.workers.dev/v1/agent/npm-symbol-context
NPM API Diff: https://x402-canary.nicolas-x402-16f380a7.workers.dev/v1/agent/npm-api-diff
Browser Context: https://x402-canary.nicolas-x402-16f380a7.workers.dev/v1/agent/browser-context
Dependency Gate: https://x402-canary.nicolas-x402-16f380a7.workers.dev/v1/agent/dependency-gate
Release Gate: https://x402-canary.nicolas-x402-16f380a7.workers.dev/v1/agent/release-gate
Full agent guidance: https://x402-canary.nicolas-x402-16f380a7.workers.dev/llms-full.txt
x402 health: https://x402-canary.nicolas-x402-16f380a7.workers.dev/v1/x402/health
Use paid external context only when local evidence cannot answer the question reliably. No account, subscription, PII enrichment, trading execution, or write actions.