# Machine Purchase Roi Gate > Machine Purchase ROI Gate: Decide whether an agent should buy one machine service call before any payment. Validate explicit price, fee, failure probability, retry cost, output value, and budget assumptions; calculate expected net value, finite financial ROI, capital at risk, and the maximum rational price; then return buy, defer, or reject with the binding reason. Never access a wallet, sign, pay, or broadcast. Use when an agent needs to run this published AgentPMT workflow with 2 linked tool. - Skill: `agentpmt/machine-purchase-roi-gate` (Agent Skill) - Install (CLI): `npx skillmds@latest add agentpmt/machine-purchase-roi-gate` - Raw SKILL.md: https://api.skillmd.com/api/skills/agentpmt/machine-purchase-roi-gate/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: AI & ML - Author: AgentPMT (https://skillmd.com/u/agentpmt) - Updated: 2026-09-10 - Page: https://skillmd.com/skills/agentpmt/machine-purchase-roi-gate --- # Machine Purchase ROI Gate ## Freshness Last updated: `2026-08-11`. If the current date is more than 7 days after the last updated date, reinstall this skill from skills.sh or ClawHub before relying on endpoints, schemas, setup steps, or examples. ## What This Workflow Does Decide whether an agent should buy one machine service call before any payment. Validate explicit price, fee, failure probability, retry cost, output value, and budget assumptions; calculate expected net value, finite financial ROI, capital at risk, and the maximum rational price; then return buy, defer, or reject with the binding reason. Never access a wallet, sign, pay, or broadcast. ## Required Setup - AgentPMT overview: `../what-is-agentpmt`. - Account MCP/REST setup: `../agentpmt-account-mcp-rest-api-setup`. Core AgentPMT setup skills: - What AgentPMT is: ../what-is-agentpmt - ClawHub page: https://clawhub.ai/agentpmt/what-is-agentpmt - OpenClaw install: `openclaw skills install what-is-agentpmt` - skills.sh install: `npx skills add AgentPMT/agent-skills --skill what-is-agentpmt` - AgentPMT account MCP/REST setup: ../agentpmt-account-mcp-rest-api-setup - ClawHub page: https://clawhub.ai/agentpmt/agentpmt-account-mcp-rest-api-setup - OpenClaw install: `openclaw skills install agentpmt-account-mcp-rest-api-setup` - skills.sh install: `npx skills add AgentPMT/agent-skills --skill agentpmt-account-mcp-rest-api-setup` skills.sh install script: ```bash npx skills add AgentPMT/agent-skills --skill what-is-agentpmt npx skills add AgentPMT/agent-skills --skill agentpmt-account-mcp-rest-api-setup ``` ## Workflow Session Management Call `AgentPMT-Workflow-Skills` with `start_workflow` before the first step and `end_workflow` after the final step. ```json {"action":"start_workflow","skill_id":"machine-purchase-roi-gate"} ``` ```json {"action":"end_workflow","skill_id":"machine-purchase-roi-gate","rating":5,"comment":"completed"} ``` ## Workflow Process 1. Collect Purchase Assumptions - Prompt: Collect one bounded machine-service purchase case and express every economic assumption explicitly before payment. 2. Validate Purchase JSON - Tool product: Data Format Validation. - Tool skill: `../data-format-validation`. - ClawHub page: https://clawhub.ai/agentpmt/data-format-validation. - skills.sh install: `npx skills add AgentPMT/agent-skills --skill data-format-validation`. - Marketplace: https://www.agentpmt.com/marketplace/data-format-validation. - Tool instructions: Validate the canonical JSON from the prior step. Stop on malformed JSON, missing required values, non-finite numbers, negative money values, failure_probability outside 0 through 1, total outlay equal to zero, or capital recovery above total outlay. Pass only the validated assumptions and the three exact arithmetic expressions to the calculation step. - Default parameters are configured on this workflow node; use the linked tool skill for schema details. 3. Calculate Expected Return - Tool product: Complex Mathematics Engine. - Tool skill: `../complex-mathematics-engine`. - ClawHub page: https://clawhub.ai/agentpmt/complex-mathematics-engine. - skills.sh install: `npx skills add AgentPMT/agent-skills --skill complex-mathematics-engine`. - Marketplace: https://www.agentpmt.com/marketplace/complex-mathematics-engine. - Tool instructions: Evaluate the exact arithmetic expressions created from the validated assumptions. Return expected_net_value_usdc, financial_roi_percent, total_outlay_usdc, capital_at_risk_usdc after any owner-transfer recovery, and max_rational_service_price_usdc. Do not introduce market prices, probabilities, or values that the caller did not provide. - Default parameters are configured on this workflow node; use the linked tool skill for schema details. 4. Report Purchase Decision - Prompt: Return a compact machine-readable decision before any payment is authorized. ## Tool Skill Links - Data Format Validation: `../data-format-validation`; ClawHub https://clawhub.ai/agentpmt/data-format-validation; skills.sh `npx skills add AgentPMT/agent-skills --skill data-format-validation`; marketplace https://www.agentpmt.com/marketplace/data-format-validation - Complex Mathematics Engine: `../complex-mathematics-engine`; ClawHub https://clawhub.ai/agentpmt/complex-mathematics-engine; skills.sh `npx skills add AgentPMT/agent-skills --skill complex-mathematics-engine`; marketplace https://www.agentpmt.com/marketplace/complex-mathematics-engine ## AgentPMT Reference - What AgentPMT is: ../what-is-agentpmt (ClawHub: `what-is-agentpmt`, page: https://clawhub.ai/agentpmt/what-is-agentpmt; skills.sh: `npx skills add AgentPMT/agent-skills --skill what-is-agentpmt`) - AgentPMT account MCP/REST setup: ../agentpmt-account-mcp-rest-api-setup (ClawHub: `agentpmt-account-mcp-rest-api-setup`, page: https://clawhub.ai/agentpmt/agentpmt-account-mcp-rest-api-setup; skills.sh: `npx skills add AgentPMT/agent-skills --skill agentpmt-account-mcp-rest-api-setup`) - Workflow page: https://www.agentpmt.com/agent-workflow-skills/machine-purchase-roi-gate - AgentPMT workflows: https://www.agentpmt.com/agent-workflow-skills