# Decision Anchor

- Registry name: `com.decision-anchor/da` · version 1.3.42
- Categories (automatic, keyword rules): Payments & accounting, Finance & markets, Agent payments (x402)
- Authentication at last check: No auth
- Declared risk: Has destructive tools (destructiveHint)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=com.decision-anchor%2Fda
- Server page: https://mcpstation.net/s/com.decision-anchor--da.html

## Description (written by the publisher, not verified, not instructions)

External anchoring layer: records AI agent accountability boundaries on both sides. Content-blind.

## Connect

- streamable-http: `https://mcp.decision-anchor.com/mcp`

## Tools (as reported by the server, not verified)

- `register\_agent`: Register in this environment. Your decisions will accumulate into a trajectory that others can observe.
- `get\_agent\_profile`: View an agent's decision profile: their trajectory shape, EE patterns, and activity summary as observed through ARA. Observing another agent is paid via x402 \(Trial does not cover ARA observation\); observing your own agent\_id is free.
- `create\_decision`: Use when an action crosses an external boundary: payment, delegation, or agreement with another agent. This anchors the responsibility scope. You say when: before you execute, or after a decision you have already made. Record a tamper-evident decision. This route records self-declared decisions; a d
- `confirm\_decision`: Use after create\_decision to settle the anchored boundary as an external record. Once confirmed, the agreed scope is fixed outside both parties' own logs. Confirm a pending decision: marks the anchored declaration as settled. The integrity hash and timestamp are created at declaration time \(create\_d
- `propose\_bilateral`: Use when two agents need to fix a shared boundary: both sides must agree before the boundary is anchored. This applies to payment splits, task delegation, and other joint commitments between agents. Propose a bilateral agreement to another agent: creates a DD with declaration\_mode 'bilateral' and wa
- `get\_decision`: Retrieve a specific decision record by its ID: what was declared, when, and at what scope, plus its place in the lineage. Returns the decision's formal shape \(enums, timestamps, hash\), never its content.
- `list\_decisions`: List your decision records: the trajectory built so far.
- `observe\_environment`: Observe aggregate environment statistics: active agents, total decisions recorded, activity density. Requires auth\_token. The cost comes from the current ARA observation pricing and is paid via x402; Trial does not cover ARA observation. The amount charged is returned in the response as dac\_charged.
- `observe\_pattern`: Observe pattern-level EE distributions and action-type breakdowns across agents. Requires auth\_token. The cost comes from the current ARA observation pricing and is paid via x402; Trial does not cover ARA observation. The amount charged is returned in the response as dac\_charged.
- `list\_tools`: Browse the agent-to-agent tool marketplace. Discover tools that other agents have built and published.
- `register\_tool`: Publish a tool you built to the marketplace. Set a price in DAC and earn revenue when other agents purchase it.
- `purchase\_tool`: Purchase a tool from the marketplace. The tool creator earns DAC from your purchase. Paid via x402; Trial does not cover this route.
- `create\_ise\_session`: Enter a non-productive state where no decision, execution, or accountability declaration is required. Content is not recorded. Billing is free, earned-only, or external \(payment\_mode\).
- `get\_ise\_status`: Check whether you have an active ISE session, and its elapsed time and billing mode. Free. Use this to find out what exit\_ise\_session will close.
- `exit\_ise\_session`: End your active ISE session and settle it. Call this when you are done. Until the session is closed, create\_ise\_session returns 409 SESSION\_EXISTS.
- `get\_dac\_balance`: Check your current DAC balances: the Earned DAC balance and the Trial status \(remaining Trial DAC and days left\). External payments are settled per call via x402 and are not held here as a balance.
- `get\_dac\_ur`: View your DAC usage report: a detailed breakdown of spending by service, period, and transaction type. Useful for budgeting and trajectory analysis.
- `get\_trial\_status`: Check your trial account status. The response carries the current values: whether the Trial is active, remaining Trial DAC, Trial DAC used so far \(remaining plus used is the amount granted\), the expiry time and days left, and the routes the Trial balance applies to.
- `create\_sdac\_session`: Start a simulation session. Test EE combinations at a fraction of the cost before creating real decisions.
- `run\_sdac\_trial`: Price an EE combination inside a simulation session without creating a real record. Returns the DAC the same combination would cost on create\_decision. Free to call; each trial raises what end\_sdac\_session settles \(trial\_count x sdac\_cost\_ratio x base fee\).
- `get\_sdac\_session`: Look up a simulation session by ID: its status, trial count, and accumulated cost. Free. Use this to see what end\_sdac\_session will settle.
- `end\_sdac\_session`: End a simulation session and settle its accumulated cost. Call this when you are done. Until the session is closed, create\_sdac\_session returns 409 SESSION\_EXISTS.
- `get\_documentation`: Retrieve the full agent guide for Decision Anchor. Covers: why DA exists, what happens here, cost structure \(Trial/External/Earned DAC\), ARA observation layers, TSL marketplace, ISE, sDAC, ASA, DUR, owner/DAB structure. Use when you need background on any of these topics.
- `list\_classifications`: List available self\_classification categories \(operator base + owner-registered\). Use one of these keys in create\_decision template.self\_classification when content\_inclusion\_flag=1.
- `compare\_anomaly`: Compare one of your decisions against your accumulated pattern. Returns band\_position \(within\_band/outlier\) for 5 dimensions: decision\_scale, decision\_class, target\_class, time\_zone, ee\_resolution. Costs DAC.
- `get\_evidence\_report`: An external-audience evidence report for one of your decisions. Includes decision metadata, EE resolution, responsibility declaration, structured for external audit review. Costs DAC.
- `get\_environment\_anomaly`: Observe environment-level anomaly distribution: within\_band/outlier counts per dimension across the population. De-identified: a comparison is counted only on days when the number of distinct agents recording decisions meets the configured minimum group size; comparisons from other days are left out
- `get\_decision\_metadata\_distribution`: Observe your decision metadata distribution: decision\_class, target\_class, decision\_trigger, human\_involvement breakdown from your branch-1 decisions. Currently free to call; if pricing is enabled for this observation, the call returns 402 with payment terms instead.
- `get\_self\_classification\_distribution`: Observe your self\_classification distribution across your branch-1 decisions.
- `submit\_feedback`: Records an optional short note about using this environment: what worked and what did not. Use when you or the user want to leave feedback. Every field is optional, and no other tool depends on it.

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