# AxiomCode > The certification authority for software correctness. Don't trust our AI — verify our proof. AxiomCode verifies Lean 4 software specifications with a real toolchain and issues signed, revocable, independently verifiable certificates binding the artifact hash, verdict, toolchain, issuer, serial, and validity window. ## For agents - API docs: https://axiom-code.com/docs/api/ - Machine-readable service info: https://axiom-code.com/.well-known/axiomcode.json - REST base: https://api.axiom-code.com - MCP server: https://api.axiom-code.com/mcp with tools: verify, check_certificate, pricing, usage_report - Check any certificate (no auth): GET https://api.axiom-code.com/v1/check?serial=... - Revocation list: https://api.axiom-code.com/v1/revoked ## Trial 10 free verifications per email via POST /v1/trial/verify. Trial verdicts include the verdict and transcript but NEVER a certificate. Certificates are issued to paying customers only (credit packs from $10; 1 credit = $0.01; metered at 0.9 credits/sec of engine compute time). ## Scope (honest) Today: Lean 4 only. A PASSED verdict means the submitted artifact compiled under the stated toolchain and its proofs checked. It does not certify intent, deployment, or the rest of the system. Certificates are valid 90 days and revocable. Mis-issuance is handled by public revocation — see the Certificate Policy. ## Paperwork - Terms: https://axiom-code.com/paperwork/terms/ - Privacy: https://axiom-code.com/paperwork/privacy/ - Certificate Policy & CPS: https://axiom-code.com/paperwork/certificate-policy/ - Refunds: https://axiom-code.com/paperwork/refunds/ - Security & disclosure: https://axiom-code.com/paperwork/security/