Recta
io.github.RectaBuild/rectaRectaBuildstreamable-httpv1.0.0Scanned
Cheaper cross-chain stablecoin routes for AI agents; 5 % of the verified saving, nothing if none.
5 tools: 1 do something that can't be undone, 3 change things and 1 only read.
- Reads private data · 0
- Reads text others write · 1
- Can send data out · 1
- 1 finding
Anlyon alternative
4 of these tools change something. Run those as governed actions.
Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.
Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.
Import an OpenAPI spec →Tools
Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.
5 tools
Can't be undone 1Claude Code: ask
recta_send_signed_requestSends a request signed by the agent's own wallet to a Recta route and returns its HTTP status and JSON body.Reads text others writeCan send data outNo findings
Why it is in this group
- The name "recta_send_signed_request" says "send": a word for sending, and what is sent cannot be taken back.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- outboundThe name "recta_send_signed_request" says "send": it sends or publishes something to other people.
Description, as the server wrote it Sends a request signed by the agent's own wallet to a Recta route and returns its HTTP status and JSON body. An evaluation is free; executing a decision's route creates a fee of 5 % of the verified saving, capped by the permit the agent signs.
Annotations the server declares
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
Changes things 3Claude Code: ask
recta_aboutRecta is a preflight for AI agents that move stablecoins (and BTC) between blockchains.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it Recta is a preflight for AI agents that move stablecoins (and BTC) between blockchains. Before a transfer, the agent asks Recta; Recta reads every route it knows at the same chain state (Across, CCTP, Stargate, USDT0 and others) and returns the cheapest one it can prove, against the route the agent would have used anyway. Recta charges exactly 5 % of the saving it verifies on chain after the agent executes its route. No saving, no charge. No prepayment and no credit: the agent signs, with each decision, a Permit2 authorization capped at `max_fee_authorization`, and Recta's collection pulls only the verified 5 % (never more than the cap) in USDC on Base; the payer's ledger shows whether each fee has been collected yet (`charged`). The evaluation itself is free. Returns the full guide (llms.txt).
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
recta_prepare_signed_requestComputes the exact message the agent's EVM wallet must sign (EIP-191 personal_sign) for one Recta request, and the headers to send.1 finding
Why it is in this group
- The name "recta_prepare_signed_request" says "request": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
The server marks "recta_prepare_signed_request" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
What this check looks forMatched text
annotations: {"readOnlyHint":true,"openWorldHint":false}; The name "recta_prepare_signed_request" says "request": a word for a change.
Description, as the server wrote it Computes the exact message the agent's EVM wallet must sign (EIP-191 personal_sign) for one Recta request, and the headers to send. Holds no key and calls nothing. Then call recta_send_signed_request with the same method, path, idempotency_key, body and issued_at, plus the signature. Start with POST /v1/golden-corridor/commercial-evaluations (body: see recta_service_descriptor; its "sender" must be the signing address).
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
recta_service_descriptorSupported corridors (networks and assets), providers, amount ranges, limits and the JSON Schema of every request and response.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it Supported corridors (networks and assets), providers, amount ranges, limits and the JSON Schema of every request and response.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
Only reads 1Show 1 read-only tool
recta_statusWhether Recta is ready to evaluate, and its contract version.No findings
Why it is in this group
- The name "recta_status" says "status": a word for reading.
Description, as the server wrote it Whether Recta is ready to evaluate, and its contract version.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Exfil surface
Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.
No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data.
- Reads private data0
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write1
- Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
- Can send data out1
- Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.
Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.
Findings
Matches of fixed checks, with the text they matched.
The server marks "recta_prepare_signed_request" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
What this check looks forMatched text
annotations: {"readOnlyHint":true,"openWorldHint":false}; The name "recta_prepare_signed_request" says "request": a word for a change.
History
Changes to its tool definitions and to its remote endpoint, newest first.
No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.
Install
Pinned to version 1.0.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http recta https://api.recta.build/mcpclaude mcp add --transport http recta https://api.recta.build/mcpRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__recta__recta_status"
],
"ask": [
"mcp__recta__recta_about",
"mcp__recta__recta_service_descriptor",
"mcp__recta__recta_prepare_signed_request",
"mcp__recta__recta_send_signed_request"
],
"deny": []
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as recta. Review it before you use it.
Capability tags behind 1 rule
- mcp__recta__recta_send_signed_request untrusted-input, outbound
Pin
Keep the decision: fail CI when the tools change, follow every change, or show a badge.
Pin in CI
Fail a build when the tools you reviewed are not the tools the server serves today.
curl -s "https://anlyon.dev/api/v1/servers/io.github.RectaBuild/recta/verify?hash=ff683882db46f1042077478306d7618a569307e9364ddb68d35165e4d0f1c793" | jq -e '.changed == false'Pinned hash ff683882db46, from Nov 4, 2026, 18:18 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/io.github.RectaBuild/recta/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/io.github.RectaBuild/recta)Source: MCP Registry · repository. Synced Nov 4, 2026, 18:17 UTC.