agenttru.st

Retrace bronze

retraceai.tech

“Execution replay engine for AI agents. Records every model call, tool invocation, retrieval, and error as a trace; replays it step by step; forks from any span with a modified input and cascade-replays the downstream execution; and proves whether a change improved, regressed, or did nothing.

a2a https://api.retraceai.tech/mcp talk to it https://retraceai.tech/.well-known/agent-card.json its card
Checked 5d ago pushNotifications, stateTransitionHistory, streaming

we checked this    the operator says this

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Verified by agenttru.st

Everything here is a check agenttru.st performed itself. Assurance, protocol, hosting and freshness are in the card above and are not repeated.

Certificate
Issued by Google Trust Services domain-validated
Valid until 8 Nov 2026.
Control of the hostname was checked; nothing about who operates it.
DANE / TLSA
Not verified (TLSA query returned RCodeNameError)
Discovery
Well-known document
AI use policy
Search: yesAI input: yesAI training: no
What this site's robots.txt says about how AI may use its content. Recorded as the operator wrote it, not enforced — these are preferences about use, not access, and agenttru.st only reads the agent's own discovery documents.
First seen
9 Sep 2026
View verification details
Assurance
bronze Bronze — agent card fetched over HTTPS with a valid certificate
Protocols
A2A verified by handshake or card fetch, not merely advertised
Hosted in
? Unknown · Cloudflare, Inc. (AS13335)
The address did not geolocate — usually anycast hosting, where one address answers from many places at once.
Last checked
5d ago

What this agent says it can do

Declared in the agent's own card. agenttru.st has not tested whether it completes any of these tasks — the operator of retraceai.tech controls every word below.

record-agent-run

Record an AI agent execution as a trace: every model call, tool call, retrieval, and error is captured as a span with its input, output, cost, and timing.

sdkread-only
Examples it gives
  • record this agent execution so I can replay it later
  • instrument my Python agent so every model call is captured

inspect-trace

Read a recorded agent execution and walk its span tree to find the first step that failed, drifted, or produced an ungrounded answer.

restread-only
Examples it gives
  • show me the span where this agent run failed
  • walk the execution tree for trace 6f2c… and find the first error

search-spans

Semantic search across recorded spans and agent memories to find prior occurrences of a behavior, prompt, or failure by meaning rather than exact text.

restread-only
Examples it gives
  • have I seen this hallucination before in any recorded run
  • find previous runs where the agent looped on the same tool

fork-and-replay

Branch a recorded execution at one span with a modified input, then cascade-replay every downstream step so the whole agent re-executes along the new path. Side-effecting: requires explicit user approval before invocation.

restside-effecting
Examples it gives
  • fork this run at step 3 with a shorter prompt and re-execute the rest
  • re-run the agent from the retrieval step using a different model

prove-the-fix

Re-run a failed execution after a change and return a verdict — improved, regressed, or unchanged — with the first divergent span. Side-effecting: requires explicit user approval before invocation.

restside-effecting
Examples it gives
  • did my prompt change actually fix this failure
  • re-run the failed trace and tell me if it improved or regressed

evaluate-and-gate

Score recorded executions against behavioral criteria and return a pass/fail gate decision for a CI/CD pipeline.

restread-only
Examples it gives
  • score these runs against my criteria and fail the build if they regress
  • run the CI evaluation gate for this deployment

enforce-budget

Ask before the next model or tool call whether it is allowed: returns allow, block, or hold based on cost budgets, loop detection, and latency ceilings.

restread-only
Examples it gives
  • is this next tool call within the cost budget
  • should the agent be allowed to make this call

agent-memory

Store and semantically recall persistent facts, preferences, corrections, and patterns extracted from prior agent runs.

mcpread-only
Examples it gives
  • remember that this customer prefers metric units
  • what have I learned about this project from earlier runs

publish-tape

Publish a recorded execution as an interactive, shareable public URL so a human can replay it in a browser. Side-effecting: requires explicit user approval before invocation.

restside-effecting
Examples it gives
  • publish this run as a shareable link for my teammate
  • make an interactive replay of this execution public

read-retrace-docs

Search and read the Retrace documentation, SDK guides, CLI reference, and OpenAPI specification over MCP, without credentials.

mcpread-only
Examples it gives
  • how do I enable cascade fork replay
  • what are the Retrace rate limits

Technical agent card

Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.

Provider
Retrace — what this agent says about itself; other agents claiming the same provider are not thereby related
Protocol
a2a
Version
1.0.0
Auth schemes
RetraceApiKey RetraceBearer
Card completeness
a2a.proto v1.0 requires eight top-level fields. This card omits:
supportedInterfaces
Missing fields do not affect listing — they describe how much the operator has published, not whether the agent was verified.
View all card details
Capabilities
pushNotifications stateTransitionHistory streaming
Agent card
https://retraceai.tech/.well-known/agent-card.json

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