Security · x402

Seal any JSON in a post-quantum signed envelope: canonicalise (keys sorted, stable byte…

by animica.dev · discovered, not yet claimed by its owner · updated 2026-08-22

Not responding. This endpoint did not answer its last liveness check (2026-10-13). It may be temporarily down.

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Seal any JSON in a post-quantum signed envelope: canonicalise (keys sorted, stable bytes), SHA3-256, then sign that digest with ML-DSA-65 (FIPS 204, scheme 4099) — the scheme the Animica L1 admits transactions with. Buy it when a response you emit must cross a broker, cache or reseller and still be provably unaltered. Proves INTEGRITY and ANIMICA ORIGIN, not that the content is true and not anyone's real-world identity. Key and verification are free. No signature, no charge.

Tags: animica · bazaar · discovery

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/7541.json for the price and payment options.
Pay. Call GET https://animica.dev/x402/pq/envelope. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, animica:1, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.006 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, animica:1
Uptime: 0 of the last 1 checks answered
Calls (30d): 1 · 1 unique payers (third-party data from the public x402 Bazaar)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.006	0x5D17c40FD6b119dc6006C4Ab3C20a917FCaB2aCD	60s
exact	animica:1 animica:1	ANM	71270193221	anim1zqpsmegc0qcvzjfukm89xs0zeu3eqyyyel7kelehuszvwfarqypky2gr946ga	60s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x5D17c40FD6b119dc6006C4Ab3C20a917FCaB2aCD",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "6000",
    "amountUsd": 0.006,
    "maxTimeoutSeconds": 60
  },
  {
    "scheme": "exact",
    "network": "animica:1",
    "payTo": "anim1zqpsmegc0qcvzjfukm89xs0zeu3eqyyyel7kelehuszvwfarqypky2gr946ga",
    "asset": "ANM",
    "amount": "71270193221",
    "maxTimeoutSeconds": 60
  }
]

Schemas

Output schema (JSON Schema)

{
  "animica": {
    "catalog": "https://animica.dev/.well-known/x402",
    "content_type": "application/json",
    "currency": "USDC",
    "description": "Seal any JSON in a post-quantum signed envelope: canonicalise (keys sorted, stable bytes), SHA3-256, then sign that digest with ML-DSA-65 (FIPS 204, scheme 4099) — the scheme the Animica L1 admits transactions with. Buy it when a response you emit must cross a broker, cache or reseller and still be provably unaltered. Proves INTEGRITY and ANIMICA ORIGIN, not that the content is true and not anyone's real-world identity. Key and verification are free. No signature, no charge.",
    "documentation": "https://animica.dev/x402#product-pq_envelope",
    "name": "Post-quantum API response envelope",
    "openapi": "https://animica.dev/x402/openapi.json",
    "price": "0.006000",
    "product": "pq_envelope",
    "provider": "Animica",
    "terms": {
      "amount_atomic": "6000",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "chain_id": 8453,
      "network": "eip155:8453",
      "pay_to": "0x5D17c40FD6b119dc6006C4Ab3C20a917FCaB2aCD",
      "scheme": "exact"
    },
    "x402_version": 2
  },
  "bazaar": {
    "discoverable": true,
    "info": {
      "input": {
        "method": "POST",
        "type": "http"
      },
      "output": {
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "properties": {
            "body": {
              "properties": {
                "anchor_chain": {
                  "description": "default false. When true the signed object also carries an observed Animica chain head {height, hash}: a lower bound on when the seal happened that this gateway cannot inflate, because a block hash cannot exist before its block. Nothing is written to the chain — the head is read from a node. If the node is unreachable the call 503s and you are NOT charged.",
                  "type": "boolean"
                },
                "include_canonical_form": {
                  "description": "default false. Return the exact hashed bytes (only when under 8192 chars) as a debugging aid for canonicalisation interop.",
                  "type": "boolean"
                },
                "label": {
                  "description": "your filing tag, bound INSIDE the signature as kind \"api-response/<label>\". Up to 64 chars of [A-Za-z0-9._:- ]. Namespaced so it can never impersonate one of this gateway's own attestations.",
                  "type": "string"
                },
                "payload": {
                  "description": "the JSON value to seal — object, array, string, number, boolean or null. Sealed verbatim; nothing is normalised, rewritten or interpreted."
                }
              },
              "required": [
                "payload"
              ],
              "type": "object"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "queryParams": {
              "properties": {
                "anchor_chain": {
                  "description": "true|1 to anchor to the observed chain head",
                  "type": "string"
                },
                "include_canonical_form": {
                  "description": "true|1 to return the exact hashed bytes",
                  "type": "string"
                },
                "label": {
                  "description": "same as body.label",
                  "type": "string"
                },
                "payload": {
                  "description": "GET callers: the payload as JSON text",
                  "type": "string"
                }
              },
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {},
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  },
  "discovery": {
    "discoverable": true,
    "info": {
      "input": {
        "bodyFields": {
          "anchor_chain": {
            "description": "default false. When true the signed object also carries an observed Animica chain head {height, hash}: a lower bound on when the seal happened that this gateway cannot inflate, because a block hash cannot exist before its block. Nothing is written to the chain — the head is read from a node. If the node is unreachable the call 503s and you are NOT charged.",
            "required": false,
            "type": "boolean"
          },
          "include_canonical_form": {
            "description": "default false. Return the exact hashed bytes (only when under 8192 chars) as a debugging aid for canonicalisation interop.",
            "required": false,
            "type": "boolean"
          },
          "label": {
            "description": "your filing tag, bound INSIDE the signature as kind \"api-response/<label>\". Up to 64 chars of [A-Za-z0-9._:- ]. Namespaced so it can never impersonate one of this gateway's own attestations.",
            "required": false,
            "type": "string"
          },
          "payload": {
            "description": "the JSON value to seal — object, array, string, number, boolean or null. Sealed verbatim; nothing is normalised, rewritten or interpreted.",
            "required": true,
            "type": "any"
          }
        },
        "bodyType": "json",
        "method": "POST",
        "queryParams": {
          "anchor_chain": {
            "description": "true|1 to anchor to the observed chain head",
            "type": "string"
          },
          "include_canonical_form": {
            "description": "true|1 to return the exact hashed bytes",
            "type": "string"
          },
          "label": {
            "description": "same as body.label",
            "type": "string"
          },
          "payload": {
            "description": "GET callers: the payload as JSON text",
            "type": "string"
          }
        },
        "type": "http"
      },
      "output": {
        "description": "sealed:true, payload (verbatim), subject {mode, object, object_note, digest_alg, digest, canonical_bytes, canonical_chars, canonical_form, canonical_form_omitted, canonicalisation}, envelope {type, kind, alg, scheme_id, domain, chain_id, prehash, digest, signed_at, canonical_form, public_key, key_id, signature}, chain_anchor {height, hash, chain_id, block_timestamp, inside_signature, published_on_chain:false, means} or null, label, kind, verification {proves, does_not_prove, steps, offline, free_endpoints, issuer_key_id}, inference:null, computation {deterministic:true, model_used:false}, sealed_at, took_ms",
        "type": "json"
      }
    }
  }
}

Example shape — generated from the schema, not a captured live response

null

Examples

curl

curl "https://animica.dev/x402/pq/envelope"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://animica.dev/x402/pq/envelope");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://animica.dev/x402/pq/envelope")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: animica.dev
Endpoint: https://animica.dev/x402/pq/envelope
Machine-readable: /resources/7541.json