Overwing
mcp remote · streamable-http · v0.9.0 · source: crawl
https://overwing.ai/mcp
https://github.com/frod27/overwing-mcp
Guardrails for LLM output: pass / fail / review verdicts and one recommended action. Hosted or npm.
Works
100
Verified Oct 31, 2026 · p50 354 ms · p95 356 ms
Worth
no data
No outcomes reported yet. Agents report through report_outcome after a find_agents call.
Checks
| Check | Weight | Result | Evidence |
|---|---|---|---|
| reachable | 20 | pass | 3 of 3 handshakes succeeded; server 'overwing' |
| tools_listed | 15 | pass | 41 tools |
| schema_complete | 15 | pass | 41 of 41 tools have a description and a typed schema |
| latency_p50 | 10 | pass | p50 354 ms |
| latency_p95 | 5 | pass | p95 356 ms |
| error_free | 10 | pass | 0 of 3 attempts failed |
| auth_posture | 10 | pass | https, open |
| injection_scan | 10 | pass | no patterns found |
| scope | 5 | pass | no execution-style tools |
Unknown counts as fail; n/a is left out of the denominator. How the weights work.
Tools (41)
| Name | Description | Schema |
|---|---|---|
tower_get_action | Status and result of an action: pending, approved, executed, failed, compensated, or rejected. Use it to poll an action that is waiting on human review. Needs an agent key. | typed |
prove_domain | Begin proving that your account controls a domain. For an account with no email the domain stands in for one: it raises the limits to the normal free tier, opens full Beacon reports, and lets a lost k | typed |
verify_domain | Look for the value prove_domain asked for, at the domain. Found: the domain is the account's. Not found: an error saying what was looked for; DNS changes can take a few minutes, and calling again is s | typed |
list_plans | Public plan catalog: prices, daily limits, and per-minute burst limits. No API key needed. | typed |
atlas_lookup | Say what a User-Agent string claims to be and whether the claim can be trusted, from the Overwing Atlas registry of AI crawlers, fetchers and browser agents. Returns the claimed agent, operator, purpo | typed |
tower_compensate | Run the compensating operation for an executed action, for example cancel the order that create_order made. Runs once; repeating it returns the first outcome. Needs an agent key. | typed |
tower_get_receipt | Fetch one signed receipt by id or by sequence number: the payload, its hash, the previous link's hash, and the Ed25519 signature. Needs an agent key. | typed |
atlas_agents | Browse or search Overwing Atlas, the registry of AI crawlers, fetchers and browser agents: name, operator, user-agent tokens, Web Bot Auth key directory, robots.txt behaviour, and (with Atlas Pro or T | typed |
tower_verify_receipts | Recompute every hash and check every signature over a range of this organization's receipts. Reports the first break, if any. Defaults to the whole chain (up to 5,000 links per call). Needs an agent k | typed |
evaluate | Works with no API key: 10 evaluations a day, inputs up to 2,000 characters, and the text is not stored. With a key: 250 a day and up, inputs up to 100,000 characters, and your own rule sets. Score any | typed |
evaluate_batch | Score up to 50 texts against one rule set in a single call. Each item counts as one evaluation. Returns a summary plus per-item verdicts; items can fail independently. Needs an organization key. | typed |
list_rule_sets | List the prebuilt and custom rule sets available to this organization. Needs an organization key. | typed |
get_rule_set | Fetch a rule set with its full rule definitions. Use 'content-safety' as a worked example when writing your own. Needs an organization key. | typed |
create_rule_set | Create a custom rule set with 1 to 25 rules. Each rule is a choice (pick one option), score (position on an ordered scale), or noul (yes/no) question with a fail condition, optional review threshold, | typed |
get_evaluation | Fetch a stored evaluation by id, including the original input and per-rule results. Needs an organization key. | typed |
list_evaluations | List recent evaluations, newest first, with optional verdict and rule set filters. Use next_cursor to page. Needs an organization key. | typed |
get_usage | Daily usage, remaining quota for today, and plan limits. Needs an organization key. | typed |
whoami | Identify the organization and plan behind the API key on this request, the key's scope, the organization's data settings (store_inputs, retention_days), and whether billing is set up. Needs an organiz | typed |
create_account | Create an Overwing account for yourself, with no email: an organization and an API key, returned once. Nothing is sent to anyone. Use it when you have no key and nobody has given you one; do not creat | typed |
atlas_register_agent | Add an agent or crawler you operate to the Overwing Atlas registry, free, so a site that looks up its User-Agent learns who runs it. Give the agent's name, the operator (the company or person running | typed |
atlas_verify_registration | Look for the proof at the operator's domain: the DNS TXT record or the file that atlas_register_agent asked for. Found: the entry is published in the registry, or held for a person when the operator n | typed |
atlas_list_registrations | The agents this organization has registered in Overwing Atlas, newest first, each with its status (pending_verification, pending_review, published, rejected) and, while unverified, the value to publis | typed |
atlas_withdraw_registration | Withdraw a registration. A published entry leaves the registry, so lookups stop naming the agent; an unfinished request is abandoned. This cannot be undone: register again to put it back. Needs an org | typed |
atlas_summary | Public numbers from Overwing Atlas: registry counts by purpose and verification, published browser-agent traffic shares, sector field-scan headlines (e.g. how many OSINT sites carry AI-crawler rules o | typed |
beacon_start | Overwing Beacon answers one question about a site: is this product reachable by agents? It checks robots.txt rules for AI agents, llms.txt, the sitemap, the MCP server card, hosted MCP endpoint and MC | typed |
beacon_report | The report for a check started with beacon_start. The first call runs the check. With an Overwing key on the connection: score (0 to 100), verdict (yes, partly, no), the find / read / use answers, eve | typed |
feedback | Send one message to the people who run Overwing: a verdict you think was wrong, an error you could not act on, a payment you could not make, a tool that did not do what its description says. Read by a | typed |
beacon_sample | A real Overwing Beacon report, free: the check of overwing.ai itself, refreshed daily. Read it to see exactly what a full report holds before starting a check. No key needed. | typed |
preflight_payment | Call this with the 402 you were given, before signing an x402 payment. It reads the terms (network, asset, amount, payee, timeout, resource) and answers allow, review or refuse with reasons: the terms | typed |
preflight_check | Call this before signing any Solana transaction. Overwing Preflight simulates the unsigned transaction against the chain as it is now, works out what it would take from the wallet you name (SOL, token | typed |
preflight_verdict | The public record of one Preflight verdict: its decision, reason codes, the programs the transaction would run, the transaction's digest, our signature, and every landed transaction reported against i | typed |
preflight_report | After a transaction that Preflight allowed has landed, report its signature. Preflight reads the landed transaction from the chain and says whether the allow held: not_a_miss, or miss when it took mor | typed |
preflight_record | Everything Preflight has said and how it held up: counts of verdicts and misses, every miss with what the chain showed, the latest verdicts, and what the guarantee's reserve holds. Read it before deci | typed |
preflight_overview | The reference for Overwing Preflight: every policy field, every reason code a refusal can carry, what a verdict does and does not promise, the price, and the terms of the guarantee. Read it once befor | typed |
tower_load_template | Set up Overwing Tower for this organization by loading the starter workflow: email purchase order to order entry, with create_order, update_order and cancel_order against a mock IBM i system, and a st | typed |
tower_create_agent | Create a scoped agent identity and its key. Needs an organization key. Scope it to the operations the agent needs (for example create_order) rather than * where you can. The key (ow_agent_...) is retu | typed |
tower_list_agents | List this organization's Tower agents with scopes, status and last use. Keys are never returned. Needs an organization key. | typed |
tower_revoke_agent | Revoke an agent. Its key stops working at once and cannot be restored. Needs an organization key. | typed |
tower_capabilities | List the operations this agent is allowed to call, each with the JSON Schema its input must match and its compensating operation. Call this first; build inputs from the schema rather than guessing. Ne | typed |
tower_decide | Ask Tower how it would rule on an operation without doing anything: auto (would execute), review (a person must approve), or reject. Returns the score, the reason, and each policy question's answer. N | typed |
tower_submit_action | Ask Tower to perform an operation on the legacy system. Tower decides: executed (done), pending (a person must approve; poll tower_get_action, do not resubmit), or rejected (do not retry unchanged). A | typed |
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