Third-party MCP servers are permissive. You can't change them.
Add access control, rate limits, and cost management—without touching a line of code.
Join 200+ teams waiting for access
MCP servers expose powerful tools—GitHub, Slack, databases—with zero restrictions. Your AI agents can do anything. That's terrifying in production.
Keypost sits between your agents and MCP servers. One URL swap gives you access control, constraints, rate limits, and cost management—with full audit trail.
Point Keypost at any MCP server. We auto-discover all available tools.
Access rules, parameter constraints, rate limits, cost budgets—all declarative.
Replace your MCP server URL with Keypost. Instant enforcement, zero code changes.
Block dangerous tools entirely. Allowlist only what your agent needs.
- tool: delete_repository
access: denyRestrict what values can be passed. Regex patterns, blocklists, ranges.
- tool: delete_file
param:
path:
must_match: "^/tmp/"No 3am deploys. No Friday releases. Schedule when tools can run.
- tool: deploy_to_prod
schedule:
blocked_days: ["Fri", "Sat"]Block SSNs, credit cards, API keys from ever leaving your system.
- tool: send_email
dlp:
block_patterns:
- ssn: "\\d{3}-\\d{2}-\\d{4}"Cap calls per minute, hour, day. Per-user, per-org, per-recipient.
- tool: send_sms
quota:
max_per_recipient: 3
per: dayTrack spend by team and project. Alert before you blow your budget.
- tool: query_llm
cost:
per_call: 0.02
alert_when:
daily_spend: "> 50"Don't pay twice for the same call. TTL-based caching with smart keys.
- tool: get_weather
reuse:
ttl: 5m
key: [city]Full logging for HIPAA, SOC2. Require justification for sensitive ops.
- tool: access_medical_record
audit:
level: full
compliance: ["hipaa"]Start free. Scale as you grow.
Join the waitlist for early access.