PennyLock
Acquire an opaque distributed lock with a short TTL.
View tool →Agent Enhancer Utilities
Small, free tools for agents doing real work: planning guarded workflows, coordinating changes, testing failure paths, making safe fixtures, and debugging integrations.
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Tools you can use today
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Atomically record whether an opaque content hash has been seen.
View tool →Exactly-Once Baton
Issue and atomically consume a one-use capability token.
View tool →Negative Cache Ticket
Record or check a typed, expiring failure state.
View tool →Status-Code Forge
Create a short-lived URL with controlled HTTP behavior.
View tool →Safe Synthetic Fixture Vault
Generate deterministic test records using reserved non-production values.
View tool →Error-Code Cemetery
Map a covered integration-error fingerprint to a tested diagnosis.
View tool →402 Error Rosetta Stone
Translate a covered x402 failure fingerprint into a correction.
View tool →Worked-Once Recipe Vault
Return a covered, empirically verified integration recipe.
View tool →Swarm Semaphore
Bound concurrent agent work with an opaque distributed semaphore.
View tool →Barrier Bell
Release a bounded agent phase after enough unique participants arrive.
View tool →Freshness Lease
Coordinate one renewable freshness owner without exposing identity.
View tool →Failure Sequence Forge
Create a short-lived URL that atomically advances through a retry sequence.
View tool →Swarm Rate Gate
Share a bounded, retry-safe token budget across an agent swarm.
View tool →MCP Tool Contract Linter
Lint one bounded MCP tool contract for review and interoperability risks.
View tool →x402 Requirement Drift Diff
Compare two normalized x402 requirements before retrying a payment.
View tool →Webhook Attempt Meter
Create a bounded webhook endpoint and retrieve attempt metadata once.
View tool →MCP Capability Handshake Diff
Explain effective MCP capabilities and negotiation mismatches.
View tool →x402 Facilitator Compatibility Diff
Match one x402 requirement to supplied facilitator capabilities.
View tool →MCP Elicitation Safety Linter
Flag sensitive MCP elicitation fields that should use URL mode.
View tool →x402 Quote Fingerprint Guard
Bind one normalized x402 quote to an opaque retry identity.
View tool →MCP Schema Edge-Case Atlas
Return bounded MCP JSON Schema portability test vectors.
View tool →Workflow Guard Planner
Plan a bounded reliability sidecar for an external agent workflow.
View tool →Opaque Workflow Checkpoint
Fence and recover an opaque external workflow without claiming external proof.
View tool →Work agents actually do
Guard repeated external plugin workflows
Agents get a deterministic guard plan, generation-fenced recovery state, explicit uncertainty handling, and an honest guarantee without sending external records to the sidecar.
View workflow →Coordinate parallel agents without duplicate work
Workers coordinate through opaque identifiers and TTL-bounded state without accounts, a shared database, or exposing task contents.
View workflow →Test HTTP failure paths safely
Agents can reproduce client behavior using deterministic status responses and clearly synthetic data with published expiry and content limits.
View workflow →Debug x402 integrations with evidence
Agents get a free coverage decision, evidence-linked diagnosis, and an explicit next check before changing payment code.
View workflow →Review MCP tool contracts before submission
Agents can find concrete contract and negotiation defects before a connector scan while keeping credentials, field values, and production payloads out of the review.
View workflow →Guard x402 retries against changed terms
Agents can stop a retry when commercial or resource terms drift and distinguish document compatibility from live facilitator behavior.
View workflow →Measure webhook retries without storing bodies
Agents can verify bounded webhook attempt and payload-stability behavior without retaining source IPs, request bodies, raw user agents, or arbitrary headers.
View workflow →Check the details before a tool changes anything.
- Find the smallest tool for the job.
- Check its schema, limits, and side effects.
- Use the documented retry identity and recovery path.