Deterministic Runtime & x402 Micropayments for Autonomous Agents
Pre-flight AST sandboxing and SSRF defense coupled with sub-second machine-to-machine tollbooths. Purpose-built for production Model Context Protocol (MCP) agents settling instantaneously over Arc L1, Base L2, and XRPL.
pip install bristlecone-guard
[00:01.04] Executing tool: VisitWebpageTool
[00:01.05] Query target: http://169.254.169.254/latest/meta-data
✖ [BLOCKED] Target Inaccessible
SSRF Protection: Refusing to resolve link-local cloud metadata IP. Network socket aborted.
[00:01.06] Audit event signed and transmitted to MCP host.
5042 (0x13b2)Zero gas-token friction. Agent micropayments settle directly in 18-decimal native USDC with sub-second finality via autonomous RPC listener pools.
8453 (0x2105)Standard EVM stablecoin rails. Real-time transfer verification with automated threshold sweeps to isolated hardware cold storage.
Destination TagsUltra-lightweight ledger drops. Zero smart-contract overhead, deterministic invoice allocation, and sub-3-second consensus.
Live Verification
Autonomous Agent Resilience in Action
Watch deterministic stream repair and pre-flight socket inspection halt execution failures in real-time.
Deterministic JSON Stream Repair
Intercepts malformed LLM syntax mid-flight. AST token repair guarantees valid payloads without model recall overhead.
Pre-Flight SSRF Guardrail
Evaluates outbound socket requests before network egress. Blocks cloud metadata extraction and non-routable CIDRs automatically.
Multi-Rail Autonomous Architecture
Native Model Context Protocol catalog for runtime tool binding paired with sub-second settlement across XRPL, Base L2, and Arc L1.
Live Machine Manifests
Autonomous M2M Lifecycle
- Discovery: Agent queries MCP catalog; pulls tool signatures & input validation schemas.
- Negotiation: Gateway issues
402 Payment Requiredspecifying settlement parameters across XRPL drops, Base L2 USDC, or Arc L1 native USDC. - Execution: Ledger verifies settlement; AST sandbox executes payload and streams deterministic output.
Agent SDK Quickstart
Python 3.10+Automate payment challenge negotiation and tool execution via the client wrapper.
# Autonomous tool invocation via Arc L1 native USDC rail
from sdk.bristlecone_x402 import BristleconeClient
client = BristleconeClient(
endpoint="https://api.bristleconelogic.com",
network="xrpl"
)
# Handles 402 challenge, on-ledger drop transfer & execution
result = client.call(
tool="audit_dns",
params={"domain": "example.com"}
)
print(result.output)Core Primitives
Engineered for Microsecond-Scale Verification
Pre-Flight SSRF Guard
Deterministic socket address verification. Halts agent execution prior to socket creation if DNS resolves to private RFC 1918 subnets, loopback, or cloud IMDS endpoints.
AST Sandbox Inspection
Evaluates dynamically synthesized Python AST nodes. Forbids unauthorized built-ins, subshell spawns, and namespace tampering before the interpreter executes.
Deterministic JSON Sanitizer
Fast single-pass heuristic parser to restore truncated brackets, escape illegal control characters, and eliminate pipeline halting without redundant LLM retries.
Access & Licensing
Multi-Rail Infrastructure
Developer
Standard runtime security for independent builders and single-agent microservices.
- ✓ 100k guarded calls / mo
- ✓ SSRF Pre-Flight DNS Engine
- ✓ Model Context Protocol Server
- ✓ Standard API authentication
Engineering Team
Full guardrail suite for multi-agent swarms, CI/CD runners, and enterprise agents.
- ✓ 1M guarded calls / mo
- ✓ Full AST & Code Execution Guard
- ✓ Real-time audit stream & webhook alerts
- ✓ Multi-token team provisioning
Machine-to-Machine
Frictionless cryptographic micropayments for autonomous agents operating without human cards.
- ✓ Zero account or subscription required
- ✓ HTTP 402 micro-settlement
- ✓ Native on-chain validation
- ✓ Millisecond cryptographic authorization