ProofSlip
Adds three tools to your MCP client for creating, verifying, and polling ephemeral proof receipts that live for 24 hours. You get create_receipt for logging completed actions or pending approvals, verify_receipt for checking what happened before taking the next step, and check_status for lightweight polling on non-terminal receipts. Useful when you need agents to coordinate on whether an email already sent, an approval cleared, or a retry is safe without building your own state tracking. Requires a ProofSlip API key from their signup endpoint. The receipts include polling guidance and expire automatically, so there's no cleanup work.
- GitHub stars
- 1
- tools
- 4
- auth
- Secret needed
- transport
- STDIO
- env vars
- 2
- last updated
- Apr 5, 2026
Tools
4 toolsPublic tool metadata for what this MCP can expose to an agent.
create_receiptCreate a legacy workflow receipt.
Create a legacy workflow receipt.
No parameter schema in public metadata yet.
verify_receiptVerify a legacy receipt.
Verify a legacy receipt.
No parameter schema in public metadata yet.
check_statusPoll legacy receipt status.
Poll legacy receipt status.
No parameter schema in public metadata yet.
signupCreate an API key for legacy receipts.
Create an API key for legacy receipts.
No parameter schema in public metadata yet.
Sponsors
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PROOFSLIP_API_KEY*secretYour ProofSlip API key (get one free at proofslip.ai)
PROOFSLIP_BASE_URLdefault: https://proofslip.aiAPI base URL (defaults to https://proofslip.ai)
Readme
ProofSlip
A public proof that a specific GitHub Actions job ran for a specific commit.
ProofSlip verifies a GitHub Actions OIDC token, records the provider-backed job identity and execution context, and returns a stable public proof URL. No ProofSlip account or API key is required for release proofs.
Live site · Agent Skill · Docs · OpenAPI · Privacy
Install the Agent Skill
npx skills add Johnny-Z13/proofslip --skill proofslip-release-proof
The open-source skill gives Codex, Claude Code, Cursor, and other skills-compatible agents two focused workflows:
- verify an existing ProofSlip URL and report provider facts, ProofSlip observations, submitted context, expiry, and limitations separately;
- prepare the smallest GitHub Actions change in the workflow that actually deploys or releases a project.
Details
- Repository
- github.com/johnny-z13/proofslip
- Website
- proofslip.ai
- Category
- AI & LLM Tools
- Package
@proofslip/mcp-server- Transport
- STDIO
- Auth
- Required
- Registry
- MCP registry, active
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