dev.agentdiet/assay
Assay A2A, MCP & x402 Pre-Flight Verifier & Observatory
Live behavioral security verifier, schema auditor, and trust oracle for A2A, MCP & x402 agents.
alive probed 2026-10-19 · HTTP 200
4tools
≈ 1.5ktokens, estimate
≈ 0.7 %of Claude's 200k window
1.0×the median server
1.8 sto initialize
848 msto list tools
- Endpoint
- https://assay.agentdiet.dev/mcp (streamable-http)
- Host
- assay.agentdiet.dev
- Protocol
- 2025-11-25
- Reports itself as
- assay 0.7.31
- Capabilities
- prompts, resources, tools
- Instructions
- 345 characters
- Of a 1M window
- ≈ 0.1 % of a 1M context window, estimate
- Claude count
- The count_tokens endpoint refused the tool schemas: invalid x-api-key. The estimate stands in.
- Website
- https://assay.agentdiet.dev
- Registry
- active, updated 2026-10-19 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
Estimates with the o200k_base tokenizer.
| Tool | o200k estimate | Share of this server |
|---|---|---|
| assay_verify_delivery | 418 | 29 % |
| assay_preflight | 373 | 25 % |
| assay_get_ledger_policy | 363 | 25 % |
| assay_probe | 309 | 21 % |
Same tool set as 1 other server
These registry entries have the same tool names and the same schema sizes.
- io.github.robertoyanguas-ops/assay assay-207908449630.us-central1.run.app
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The Anthropic count_tokens endpoint refused the tool schemas (invalid x-api-key). A client that validates schemas can refuse them too.
Fixed something? Probe it now, with the same steps as the daily run. This page updates with the next daily run.