MCP server for Infracost CLI integration - cloud cost estimates for Infrastructure as Code
Quick Install
Automated & IDE SetupCopy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.
One-click editor setup isn’t available for this listing yet — we don’t have a confirmed install command, and we’d rather show nothing than point your editor at the wrong package or host. Follow the project’s own setup instructions, linked above.
Manual Client & Custom JSON ConfigExpand JSON â–¾
No confirmed setup config for this listing yet. We only publish a config block when the install details come from the project itself — its README, its docs, or a verified owner. We haven’t found those for infracost, and we’d rather show nothing than a guess you’d paste into your client. Follow the project’s own setup instructions for the current steps.
Capabilities & Tool Schemas (8)
Inspect callable tools, capabilities, and parameters exposed to AI agents by Infracost.
infracost_breakdownMonthly cost baseline for current IaC
infracost_diffCost delta from a planned change
infracost_outputRendered table/JSON/HTML/comment output
infracost_commentPR comment with estimated impact
infracost_uploadCost report visible in Infracost Cloud
infracost_configurePersisted CLI config update/read
Documentation Overview
Infracost MCP Server
Note: This is a community-maintained MCP server. It is not an official Model Context Protocol server from Infracost.
A Model Context Protocol (MCP) server for running the Infracost CLI to estimate, compare, and publish infrastructure cost changes from Terraform and other Infrastructure as Code projects.
Overview
This server provides eight MCP tools across estimation, reporting, collaboration, and operations workflows:
infracost_breakdownto generate baseline cost estimates.infracost_diffto compare planned cost changes.infracost_outputto render existing Infracost JSON in different formats.infracost_commentto post PR comments on supported SCM platforms.infracost_uploadto upload reports to Infracost Cloud.infracost_configureto get or set CLI configuration.infracost_authto run authentication flow.infracost_generate_usageto generate usage files with sensible defaults.
Platform Compatibility
This MCP server is platform-agnostic and works in local and CI environments:
- Local development
- GitHub Actions
- GitLab CI/CD
- Azure DevOps
- CircleCI, Jenkins, and Bitbucket Pipelines
- AI Agents and Copilot workflows
The primary requirements are Node.js and the Infracost CLI binary.
Tool Matrix
| Tool | Category | Typical outcome |
|---|---|---|
infracost_breakdown | Estimation | Monthly cost baseline for current IaC |
infracost_diff | Comparison | Cost delta from a planned change |
infracost_output | Reporting | Rendered table/JSON/HTML/comment output |
infracost_comment | Collaboration | PR comment with estimated impact |
infracost_upload | Cloud Sync | Cost report visible in Infracost Cloud |
infracost_configure | Configuration | Persisted CLI config update/read |
infracost_auth | Authentication | Login flow for Infracost Cloud |
infracost_generate_usage | Utilities | Pre-filled usage file template with defaults |
Tools
infracost_breakdown
Runs infracost breakdown.
Inputs:
workingDirectory(string, optional): Command working directory.path(string, optional): Path to Terraform/IaC directory or plan JSON.configFile(string, optional): Path to Infracost config file.usageFile(string, optional): Path to usage file.format(string, optional): Output format. Default:table.fields(string[], optional): Fields to include in output.showSkus(boolean, optional): Include SKU details.syncUsageFile(boolean, optional): Sync usage file with detected resources.compareTo(string, optional): Baseline Infracost JSON path.terraformWorkspace(string, optional): Terraform workspace.terraformPlanFlags(string, optional): Flags forterraform plan.timeoutSeconds(number, optional): Timeout in seconds.extraArgs(string[], optional): Additional CLI arguments.
infracost_diff
Runs infracost diff.
Inputs:
workingDirectory(string, optional): Command working directory.path(string, optional): Path to Terraform/IaC directory or plan JSON.configFile(string, optional): Path to Infracost config file.usageFile(string, optional): Path to usage file.format(string, optional): Output format. Default:table.compareTo(string, optional): Baseline Infracost JSON path.showSkus(boolean, optional): Include SKU details.syncUsageFile(boolean, optional): Sync usage file with detected resources.terraformWorkspace(string, optional): Terraform workspace.terraformPlanFlags(string, optional): Flags forterraform plan.timeoutSeconds(number, optional): Timeout in seconds.extraArgs(string[], optional): Additional CLI arguments.
infracost_output
Runs infracost output.
Inputs:
workingDirectory(string, optional): Command working directory.path(string, optional): Infracost JSON file path. Auto-detected when omitted.format(string, optional): Output format. Default:table.fields(string[], optional): Fields to include in output.showSkus(boolean, optional): Include SKU details.timeoutSeconds(number, optional): Timeout in seconds.extraArgs(string[], optional): Additional CLI arguments.
infracost_comment
Runs infracost comment.
Inputs:
workingDirectory(string, optional): Command working directory.platform(string, optional): Platform (github,gitlab,azure-repos,bitbucket). Default:github.path(string, optional): Infracost JSON file path. Auto-detected when omitted.repo(string, optional): Repository (owner/repo).pullRequest(string, optional): Pull request number.commit(string, optional): Commit SHA.token(string, optional): Platform token.tag(string, optional): Comment tag.behavior(string, optional): Comment update behavior.dryRun(boolean, optional): Generate without posting.timeoutSeconds(number, optional): Timeout in seconds.extraArgs(string[], optional): Additional CLI arguments.
infracost_upload
Runs infracost upload.
Inputs:
workingDirectory(string, optional): Command working directory.path(string, optional): Infracost JSON file path. Auto-detected when omitted.timeoutSeconds(number, optional): Timeout in seconds.extraArgs(string[], optional): Additional CLI arguments.
infracost_configure
Runs infracost configure.
Inputs:
workingDirectory(string, optional): Command working directory.set(string, optional): Set configuration value.get(string, optional): Read configuration value.timeoutSeconds(number, optional): Timeout in seconds.extraArgs(string[], optional): Additional CLI arguments.
infracost_auth
Runs infracost auth login.
Inputs:
workingDirectory(string, optional): Command working directory.timeoutSeconds(number, optional): Timeout in seconds.extraArgs(string[], optional): Additional CLI arguments.
infracost_generate_usage
Generates an Infracost usage file with sensible defaults for specified resource types. This is a utility tool that complements infracost_configure by providing pre-filled templates you can customize for your workloads. Returns both raw JSON and formatted guidance.
Inputs:
resourceTypes(string[], required): Resource types to include (e.g.,["aws_lambda_function", "aws_s3_bucket"]).outputFilePath(string, optional): Path where usage file should be saved (for guidance only).includeGuidance(boolean, optional): Include formatted guidance. Default:true.onlyJson(boolean, optional): Return only raw JSON (no guidance). Default:false.
Supported resource types: aws_lambda_function, aws_instance, aws_db_instance, aws_s3_bucket, aws_dynamodb_table, aws_ebs_volume, aws_cloudfront_distribution, aws_lb, aws_nat_gateway, google_compute_instance, google_storage_bucket, azurerm_windows_virtual_machine, azurerm_linux_virtual_machine, azurerm_storage_account, azurerm_mssql_database.
Prompt Cookbook
Use these minimal prompts in Copilot Chat with @infracost.
CLI tools default to the current workspace root when no path is given.
If you add a file or folder as Copilot context (#file or #folder), reference it in your prompt and the tool will target that path.
The server auto-detects common report files (infracost-diff.json, infracost-base.json, infracost.json), so you usually do not need to pass path for infracost_output, infracost_comment, or infracost_upload.
Quick prompts
Run breakdown (infracost_breakdown)
Expected output: Baseline cost estimate with command output, exit code, stdout, and stderr.
Run diff (infracost_diff)
Expected output: Cost delta from the planned change compared to current baseline.
Render output (infracost_output)
Expected output: Formatted output from existing Infracost JSON (auto-detected when possible).
Post PR comment (infracost_comment)
Expected output: Generated comment payload, or posted comment when not in dry-run mode. Platform defaults to github.
Upload report (infracost_upload)
Expected output: Upload confirmation for Infracost Cloud ingestion.
Configure CLI (infracost_configure)
Related MCP Servers
Adoption & maintenance
Factual signals from GitHub, npm, and our automated checks — not a rating.
Last commit
2d ago
Most recent push to the default branch.
Tools exposed
8
Callable tools this server registers over MCP.
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Frequently Asked Questions about Infracost
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